Corning Incorporated

Eurokera

Eurokera S.n.c.

Sophie Peschiera

Allan Mark Fredholm

Laurent Joubaud

Stephane Poissy

Thierry Luc Alain Dannoux

Lionel Beunet

Charlene Marie Smith

Qiang Fu

Marie Jacqueline Monique Comte

Anne Paris

Lionel Joel Mary Beunet

Christophe Remy

Arnaud Dominique Dejean

Claude Fm Gille

Patrick Jean Pierre Herve

Paul L Netter

Sebastien Hyvart

Fabrice Minier

Michele Marie-Louise Meyer

Pablo Vilato

William Edward Lock

Sumalee Likitvanichkul

Thierry L A Dannoux

Marie J M Comte

Mikhail Dmitrievich Mikhailov

Eric Papin

Pablo Juan Vilato Gailloud

Anna V Belykh

Sergey K Evstropiev

Monique Comte

Marie Jaqueline Monique Comte

Gilles Grandpierre

Catherine Bourrat

Pablo Juan Gailloud

Mikhail D Mikhailov

Stéphane Poissy

Glass-ceramics exhibiting a Vickers indentation crack initiation threshold of at least 15 kgf are disclosed. These glass-ceramics may be ion exchangeable or ion exchanged. The glass-ceramics include a crystalline and amorphous phases generated by subjecting a thin precursor glass article to ceramming cycle having an average cooling rate in the range from about 10° C./minute to about 25° C./minute. In one or more embodiments, the crystalline phase may comprise at least 20 wt % of the glass-ceramics. The glass-ceramics may include β-spodumene ss as the predominant crystalline phase and may exhibit an opacity≥about 85% over the wavelength range of 400-700 nm for an about 0.8 mm thickness and colors an observer angle of 10° and a CIE illuminant F02 determined with specular reflectance included of a* between −3 and +3, b* between −6 and +6, and L* between 88 and 97.

Crack-resistant glass-ceramic articles and methods for making the same

Glass-ceramics exhibiting a Vickers indentation crack initiation threshold of at least 15 kgf are disclosed. These glass-ceramics may be ion exchangeable or ion exchanged. The glass-ceramics include a crystalline and amorphous phases generated by subjecting a thin precursor glass article to ceramming cycle having an average cooling rate in the range from about 10&#xb0; C./minute to about 25&#xb0; C./minute. In one or more embodiments, the crystalline phase may comprise at least 20 wt % of the glass-ceramics. The glass-ceramics may include &#x3b2;-spodumene ss as the predominant crystalline phase and may exhibit an opacity &#x2265;about 85% over the wavelength range of 400-700 nm for an about 0.8 mm thickness and colors an observer angle of 10&#xb0; and a CIE illuminant F02 determined with specular reflectance included of a* between &#x2212;3 and +3, b* between &#x2212;6 and +6, and L* between 88 and 97.

Glass-ceramics exhibiting a Vickers indentation crack initiation threshold of at least 15 kgf are disclosed. These glass-ceramics may be ion exchangeable or ion exchanged. The glass-ceramics include a crystalline and amorphous phases generated by subjecting a thin precursor glass article to ceramming cycle having an average cooling rate in the range from about 10&#xb0; C./minute to about 25&#xb0; C./minute. In one or more embodiments, the crystalline phase may comprise at least 20 wt % of the glass-ceramics. The glass-ceramics may include &#x3b2;-spodumene ss as the predominant crystalline phase and may exhibit an opacity &#x2267;about 85% over the wavelength range of 400-700 nm for an about 0.8 mm thickness and colors an observer angle of 10&#xb0; and a CIE illuminant F02 determined with specular reflectance included of a* between &#x2212;3 and +3, b* between &#x2212;6 and +6, and L* between 88 and 97.

A method for bending a sheet of material into a shaped article includes providing the sheet of material. A reformable area and a non-reformable area of the sheet of material are heated to a first temperature range corresponding to a first viscosity range. The reformable area of the sheet of material is subsequently heated to a second temperature range corresponding to a second viscosity range. The reformable area of the sheet of material is reformed into a selected shape by at least one of sagging the reformable area of the sheet of material and applying a force to the sheet of material outside of or near a boundary of the reformable area.

Method and apparatus for bending a sheet of material into a shaped article

Provided herein is a method for producing glass-ceramic sheets. The method includes texturing at least one surface of a first glass sheet, and stacking the first glass sheet and a second glass sheet. The first glass sheet and the second glass sheet are stacked so that the textured surface of the first glass sheet contacts a surface of the second glass sheet. The first and second glass sheets are cerammed. After cooling, the cerammed first and second glass sheets are separated. Also provided is a pre-form for producing glass-ceramic sheets. The pre-form includes a first glass sheet having a textured surface, and a second glass sheet contacting the first glass sheet. The textured surface of the first glass sheet is in contact with a surface of the second glass sheet.

Method for reducing glass-ceramic surface adhesion, and pre-form for the same

An apparatus and method for precision bending a glass sheet that includes an oven for heating the glass sheet to a temperature near the softening temperature of the glass sheet. A stage for supporting the glass sheet. A pair of reference surfaces on the stage for precisely locating the glass sheet on the stage. At least one bending mechanism on a pair of arms inside the oven for bending an edge portion of the glass sheet. Inward facing first stop surfaces on the arms that contact reference surfaces on the stage for precisely locating the bending mechanism on the arms relative to the stage and the glass sheet.

Process and system for precision glass sheet bending

Lead-free enamel composition, the corresponding enamels and glass-ceramic articles, a new lead-free mineral glass

The present invention relates to a product, comprising a body which is delimited by a surface, of a lithium aluminosilicate-based glass-ceramic, as well as to its method of preparation. Characteristically, said glass-ceramic has, on at least one part of said surface, a surface layer the degree of crystallization of which is greater than that of said glass-ceramic within said body.

Surface-modified glass-ceramics and their preparation

The present invention relates to novel glass and glass-ceramic materials, articles made from said novel glass-ceramics and to methods of preparing said novel glass-ceramics and articles. Said novel, transparent, translucent or opaque glass-ceramics, which contain, as main crystalline phase, a solid solution of &#x3b2;-quartz or of &#x3b2;-spodumene, essentially have the following composition, expressed as percentages by weight of oxides: 65 to 70% of SiO; 18 to 23% of AlO; &#x3e;4 to 5% of LiO; 0 to &#x3c;1% of MgO; 1 to 3% of ZnO; 0 to 2% of BaO; 1.8 to 4% of TiO; 1 to 2.5% of ZrO; 0.4 to 1% of KO and/or NaO; with, advantageously, an effective and non-excess amount of at least one fining agent. The glass-ceramic material is also characterized by a water content of &#x3b2;-OH higher than 0.2 mm, preferably higher than 0.4 mm.

Glass and glass-ceramic materials, articles and method of preparing the same

Objects of the present invention are: the enamel able to be obtained by firing of said composition;

A glass-ceramic plate based on silicon, aluminum and lithium oxides is intended, in particular, to cover heating elements. The plate has a diffuse transmission factor of at least 50%. A process for manufacturing the plate is provided.

Glass-ceramic plate and method for making same

The invention relates to a decorated glass-ceramic plate, suitable in particular as a cooktop, comprising a glass-ceramic plate having a low coefficient of thermal expansion between &plusmn;15&times;10 K (20-700&deg; C.) and a decoration on the surface of said plate. Characteristically, said decoration comprises a vitrified glass frit containing to % by weight of pigments and said decorated glass-ceramic cooktop has a modulus of rupture of at least 120 MPa. The invention also relates to a method of decorating glass-ceramic plates and to an enamel which is useful in particular for implementing said method.

Decorated glass-ceramic plate

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Veneux les Sablons, France

Sophie Peschiera