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Corning Ware, also written CorningWare, was originally a brand name for a unique glass-ceramic (Pyroceram) cookware resistant to thermal shock. It was first introduced in 1958 by Corning Glass Works (later Corning Inc.) in the United States. The brand was later spun off with the sale of the Corning Consumer Products Company subsidiary (now known as Corelle Brands of Rosemont, Illinois). Glass-ceramic based Corning Ware can be taken from the refrigerator or freezer and used directly on the stovetop, in an oven or microwave, under a broiler, for table / serving use, and when ready for cleaning put directly into a dishwasher. CorningWare is sold worldwide, and it is popular in North America, Asia, and Australia.
In 1953 S. Donald Stookey of the Corning Research and Development Division discovered Pyroceram, a white glass-ceramic material capable of withstanding a thermal shock (sudden temperature change) of up to 450 K (840 °F), by accident.
He was working with photosensitive glass and placed a piece into a furnace planning on heating it to 600 degrees Fahrenheit. When he checked on his sample the furnace was at 900 degrees and the glass had turned milky white. He reached into the furnace with tongs to discard the sample and it slipped and hit the floor without shattering.
The material was used in the ballistic missile program as a heat-resistant material for nose cones.
Production of the original Pyroceram based version of Corning Ware ceased in 2000[ citation needed ] and the brand was relaunched as a line of stoneware based bakeware in 2001.
Corelle Brand's (then known as "World Kitchen") 2001 annual report indicated that the stove top and dinnerware product lines were halted at the end of the century "as part of a program designed to reduce costs through the elimination of under-utilized capacity, unprofitable product lines, and increased utilization of the remaining facilities."Facilities in Charleroi, Pennsylvania and Clinton, Illinois were closed.
In December 2008, the stovetop line of CorningWare was reintroduced by Corelle Brands. The cookware is manufactured by Keraglass/Eurokera (a subsidiary of Corning also specialised in vitroceramics for cooktop panels and equipment for laboratories) in Bagneaux-sur-Loing, France. This is one of the only factories in the world still manufacturing Pyroceram-based cookware. At the time it restarted the production of CorningWare, Keraglass/Eurokera was able to abandon the use of arsenic in the manufacture of their products, thanks to the modern technology of their newly built oven.
Corning Ware's range/oven-to-table service first featured the blue 'Cornflower' pattern decoration, designed by Joseph Baum, an artist at the Charles Brunelle Advertising Agency in Hartford, Connecticut. It became the trademark of Corning consumer products for three decades. Following the 'Cornflower' pattern, many additional patterns were offered by Corning over the years.
Corelle Brand's Pyroceram based Corning Ware is popular in the Asia–Pacific region. Additional patterns have been created specifically for this market, including Bliss, Blue Elegance, Cool Pansies, Country Rose, Dainty Flora, Dandy Blossoms, Elegant City, European Herbs, Herb Country, Lilyville, Lush, Petite Trio, Plum, Salad Seasons and Warm Pansies among others.
The lids of CorningWare and Pyroflam (Europe) are typically made of Pyrex. Though some early lids were made of Pyroceram, most subsequent lids have been made of tempered borosilicate or soda-lime glass. Unlike the cookware, these lids have a lower tolerance for thermal shock and cannot be used over or under direct heat.
More than 750 million pieces of Corning Ware's range/oven-to-table service have been manufactured since its inception. A partial product list includes: browning skillets, cake pans, casserole dishes, coffee pots (drip), dinner service (Centura by Corning), Dutch ovens, frying pans, grab-it bowls, loaf pans, percolators, pie plates, ramekins, restaurant ware (Pyroceram), roasters, sauce pans, skillets, souffle dishes, and teapots.
Corelle Brands sells similar looking products under the CorningWare brand name (including a copy of "French White") that are made of glazed stoneware, rather than Pyroceram. The packaging for these newer CorningWare branded cookware products say specifically that they are not for stovetop use.
Visions, a brand of transparent stove top cookware originally created by Corning France and still being produced today, is made of a transparent version of Pyroceram, called Calexium in some regions of the world. It features thermal traits similar to Corning Ware plus improved resistance to staining and the detrimental effects of acids and detergents.
Corelle, a brand name for break-resistant glass dishware also originally created by Corning Glass Works, has offered matching designs to many Corning Ware patterns.Care must be made to distinguish between Corning Ware cookware and tableware marketed under the Corelle or Pyrex brand names, as the thermal properties of each product are quite different.
Arc International, Europe, sells equivalent cookware to Corning Ware under the name Arcoflam and, in the United States, through Princess House as Nouveau cookware with a slightly different design. Since 2009, Arcoflam and Nouveau have been manufactured in the same French factory as Corning Ware.
When I came back, the temperature gauge was stuck on 900 degrees, and I thought I had ruined the furnace ... When I opened the door to the furnace, I saw the glass was intact and had turned a milky white. I grabbed some tongs to get it out as fast as I could, but the glass slipped out of the tongs and fell to the floor. The thing bounced and didn’t break. It sounded like steel hitting the floor. ...
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Glass-ceramics have an amorphous phase and one or more crystalline phases and are produced by a so-called "controlled crystallization" in contrast to a spontaneous crystallization, which is usually not wanted in glass manufacturing. Glass-ceramics have the fabrication advantage of glass, as well as special properties of ceramics. When used for sealing, some glass-ceramics do not require brazing but can withstand brazing temperatures up to 700 °C. Glass-ceramics usually have between 30% [m/m] and 90% [m/m] crystallinity and yield an array of materials with interesting properties like zero porosity, high strength, toughness, translucency or opacity, pigmentation, opalescence, low or even negative thermal expansion, high temperature stability, fluorescence, machinability, ferromagnetism, resorbability or high chemical durability, biocompatibility, bioactivity, ion conductivity, superconductivity, isolation capabilities, low dielectric constant and loss, high resistivity and break-down voltage. These properties can be tailored by controlling the base-glass composition and by controlled heat treatment/crystallization of base glass. In manufacturing, glass-ceramics are valued for having the strength of ceramic but the hermetic sealing properties of glass.
Cookware and bakeware are types of food preparation containers, commonly found in a kitchen. Cookware comprises cooking vessels, such as saucepans and frying pans, intended for use on a stove or range cooktop. Bakeware comprises cooking vessels intended for use inside an oven. Some utensils are considered both cookware and bakeware.
Pyrex is a brand introduced by Corning Inc. in 1915 for a line of clear, low-thermal-expansion borosilicate glass used for laboratory glassware and kitchenware. It was later expanded to include clear and opal ware products made of soda-lime glass.
Corning Incorporated is an American multinational technology company that specializes in specialty glass, ceramics, and related materials and technologies including advanced optics, primarily for industrial and scientific applications. The company was named Corning Glass Works until 1989. Corning divested its consumer product lines in 1998 by selling the Corning Consumer Products Company subsidiary to Borden, but still holds an interest of about 8 percent.
Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion, making them more resistant to thermal shock than any other common glass. Such glass is subjected to less thermal stress and can withstand temperature differentials without fracturing of about 165 °C (329 °F). It is commonly used for the construction of reagent bottles. Borosilicate glass is sold under various trade names, including Borcam, Borosil, Duran, Pyrex, Supertek, Suprax, Simax, BSA 60, BSC 51, Heatex, Endural, Schott, Refmex, Kimble, and MG (India).
Le Creuset is a premium French cookware manufacturer best known for its colorfully-enameled cast-iron cookware "French ovens", also known as "cocottes" or "coquelles" and "sauce pans" or "casseroles". The company also makes many other types of cookware and bakeware, from fondue-sets to tagines.
Grab-Its are microwave-safe cookware easily identifiable by their tab handle. They were introduced by Corning Glass Works in 1977, under the Corning Ware brand and are now sold in a slightly different form by Corelle Brands. Grab-Its are notable as being among the first cookware specifically designed for microwave use - their design was recognized by the Smithsonian's Cooper-Hewitt, National Design Museum. Grab-Its strongly resemble porringers.
Corelle Brands, LLC is an American kitchenware products maker and distributor based in Rosemont, Illinois.
Stanley Donald Stookey was an American inventor. He had 60 patents in his name related to glass and ceramics, some patents solely his and others shared as joint patents with other inventors. His discoveries and inventions have contributed to the development of ceramics, eyeglasses, sunglasses, cookware, defense systems, and electronics.
Corelle is a brand of glassware and dishware. It is made of Vitrelle, a tempered glass product consisting of two types of glass laminated into three layers. It was introduced by Corning Glass Works in 1970, but is now manufactured and sold by Corelle Brands. A typical Corelle dinner plate measures 26 centimetres in diameter and weighs 355 grams.
Arc International is a French manufacturer and distributor of household goods. The company was established in Arques, Pas-de-Calais, where it is still headquartered, as a glass-making firm under the name Verrerie des Sept Ecluses in 1825. In 1892 the name was changed to Verrerie Cristallerie d'Arques, and after a series of acquisitions in the 1990s the group was renamed in 2000 to the current name. It is the leading manufacturer of crystal and glassware in the world. It is privately held and has been owned by members of the Durand family since 1916. Arc International currently licenses the Pyrex brand of cookware for sale in the European Union. Competitors include Lenox Group, World Kitchen and Waterford Wedgwood.
Revere Ware is a line of consumer and commercial kitchen wares introduced in 1939 by the Revere Brass & Copper Corp. The line focuses primarily on consumer cookware such as skillets, sauce pans, stock pots, and tea kettles. Initially Revere Ware was the culmination of various innovative techniques developed during the 1930s, the most popular being construction of stainless steel with rivetlessly attached bakelite handles, copper-clad bases and rounded interiors for ease of cleaning. Over the next 40+ years, Revere Ware would introduce new series to position itself in competition with other manufacturers at various price points, or for specific specialty markets. In the early 1960s the profitability of Revere Ware began to level off. Coinciding with new series introductions, cost-cutting measures were implemented in the manufacture of the traditional cookware. The bakelite handles were changed from two piece to one, and the thickness of utensil walls and copper cladding were reduced.
Pyroceram is the original glass-ceramic material developed and trademarked by Corning Glass in the 1950s. Pyroceram is an opaque white glass material, commonly used in kitchenware, glass stove tops, wood stove doors, etc. It has high heat tolerance and low thermal expansion.
Seasoning is the process of treating the surface of a cooking vessel with heated fat in order to produce a corrosion-resistant and stick-resistant coating.
Cer-vit is a family of glass-ceramic materials that were invented by Owens Illinois in the mid-1960s. Its principle ingredients are the oxides of lithium, aluminum and silicon. It is melted to form a glass which is then heat treated to nucleate and crystallized it into a material that is more than 90% microscopic crystals. Its formulation and heat treatment can be modified to produce a variety of material properties. One form is a material that is transparent and has a near zero thermal expansion. Its transparency is because the microscopic crystals are smaller than the wave length of light and are transparent, and its low thermal expansion is because they have a spodumene structure.
Griswold Manufacturing was an American manufacturer of cast iron kitchen products founded in Erie, Pennsylvania, in business from 1865 through 1957. For many years the company had a world-wide reputation for high-quality cast-iron cookware. Today, Griswold pieces are collector's items.
Visions is a brand of transparent stove top cookware created by Corning France and introduced to Europe during the late 1970s. In 1983, it was introduced in the United States and became the number one selling cookware set for a number of years. Visions is made of Calexium, a transparent material belonging to the Pyroceram family of glass-ceramics. It is one of the few cookware lines than can be used on the range, in the oven, and under a broiler. It will withstand heat up to 850 °C (1,560 °F) with thermal traits similar to Corning Ware plus improved resistance to staining and the detrimental effects of acids and detergents. Visions is sold worldwide by Corelle Brands, LLC.
Lucy Mary Maltby (1900–1984) started the Pyrex Test Kitchen at Corning Glass Works.