William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 6584744 | Apparatus for securing a glass plate in a recess A securing apparatus for a glass plate in a recess, especially a glass-ceramic cooking surface, is provided with easily removable components. The apparatus comprises a sealing frame; a holding frame connected to the sealing frame; a circumferential, perma... | 07/01/2003 |
| 6293222 | Remote-plasma-CVD method for coating or for treating large-surface substrates and apparatus for performing same The apparatus for coating or treating a substrate in a remote plasma CVD process includes a reaction chamber for the substrate; modular plasma source devices for exciting an excitation gas, preferably with microwaves, to form a plasma in the excitation ga... | 09/25/2001 |
| 6220056 | Device for handling thin panes of glass and fragile work pieces For handling thin panes of glass or similar work pieces and products in conveyance systems, machining installations, and the like, by means of pneumatic forces, a device is proposed that is characterized by two plates (1, 2) with flat surfaces on at least... | 04/24/2001 |
| 6207933 | Stove top assembly and related method A stove top assembly comprises a cooking plate having a perimeter portion and a mounting frame around the perimeter portion. In the improvement, the frame includes a lateral carrier member and an upstanding retention member extending extending away from t... | 03/27/2001 |
| 6187429 | Decorative ceramic color layers applied to glass or glass ceramic substrates For obtaining firmly adhering decorative layers of ceramic colors applied to glass or glass ceramic substrates, prior to stoving, optically inactive inorganic substances, e.g., mica, which are chemically inert with respect to the base enamel and the pigme... | 02/13/2001 |
| 6156399 | Glass containers which may be sterilized for medical purposes, in particular for the storage of pharmaceutical or diagnostic products The invention is a glass container which can be sterilized for medical purposes, including the storage of pharmaceutical or diagnostic products, further including solutions. The container is made from glass containing a stabilizer which inhibits the delet... | 12/05/2000 |
| 6129545 | Gas burner with pollution-reducing features A gas burner has a perforated, hollow body around and defining a combustion chamber. Gaseous fuel is fed to one side of the body, combustion occurs on the other side and the perforations provide a spatial connection between the fuel feed side and the comb... | 10/10/2000 |
| 6096670 | Alkali metal-free aluminoborosilicate glass and its use An alkali metal-free aluminoborosilicate glass is described which has the following composition (in % by weight based on oxide): SiO2 57-60; B2 O3 6.5-9.5; Al2 O3 14-17.5; MgO 5-8; CaO 1-4; SrO 5-8; BaO 0-... | 08/01/2000 |
| 6085643 | Mounting arrangement for a cooking plate and related method Disclosed is a mounting arrangement for a cooking plate having a perimeter edge. The arrangement includes the plate and a frame around the plate, the frame having a support portion extending over the perimeter edge and a rib extending away from the suppor... | 07/11/2000 |
| 6067980 | Gas cooking appliance Gas cooking appliances having glass or glass-ceramic plates for cooking surfaces also having gas-radiation burners that are positioned below the plate or atmospheric burners that are recessed in the plate. With gas radiation burners, care must be taken to... | 05/30/2000 |
| 6065270 | Method of producing a filled plastic syringe body for medical purposes A method for manufacturing a filled syringe body within a single continuous manufacturing line in a self-contained environment with controlled conditions. The method includes the steps of injection molding the syringe body, sealing the one end of the syri... | 05/23/2000 |
| 6063478 | Transport shield, assembly aid and operating means for glass ceramic panels A transport shield is provided for brittle glass and glass ceramic panels susceptible to scratching and fracturing to be integrated into a cooker, in particular as cooking surfaces. The transport shield remains permanently joined to the panel during insta... | 05/16/2000 |
| 5985378 | Remote-plasma-CVD method for coating or for treating large-surface substrates and apparatus for performing same The remote-plasma-CVD process for coating or treating large-surface substrates includes exciting an excitation gas located remotely from a substrate surface to be coated or treated in modular plasma source devices arranged either in a linear arrangement o... | 11/16/1999 |
| 5981914 | Modular grilling and cooking apparatus An encapsulated, standardized, ready-to-use, transportable, modular grilling and/or cooking unit with a grilling or cooking surface of glass, glass ceramic or ceramic is provided, with at least one electrically heated grilling and/or cooking zone. A housi... | 11/09/1999 |
| 5977522 | Mounting device, for light guides, operating as a cooking zone marking with sleeve-like receptacles In order to provide a mounting device for light guides which is pre-mountable on a heating element or on a cooking surface and which can be equipped with the light guides in a simple way, several receptacles (20) for the light guide ends are arranged besi... | 11/02/1999 |
| 5972436 | CVD process for coating the inside of hollow bodies A process for CVD coating of a hollow body with a barrier layer, comprising measuring the temperature inside of the body by igniting plasma within said body with at least one ignition pulse and correlating the time between the ignition pulse and a pulse o... | 10/26/1999 |
| 5958272 | Cooktop with a glass or glass ceramic cooking surface Cooktops with a glass or glass ceramic cooking surface include the usual multiple cooking zones and functional elements, like operating elements, display, etc. The cooking surface exhibits recesses, in which the operational zones, assigned to the elements... | 09/28/1999 |
| 5945177 | Process for coating an exterior portion of a lamp A process for coating an exterior of a lamp is disclosed, which comprises performing the coating in a microwave reactor by a microwave plasma CVD process and coupling microwave radiation into the microwave reactor with a microwave power greater than or eq... | 08/31/1999 |
| 5922271 | Method for the manufacture of dense-sintered glass ceramic moldings A method for the manufacture of dense-sintered glass-ceramic shaped objects which have a coefficient of thermal expansion, , of -0.5×10-6 /K to 1.8×10-6 /K in the range between 20° C. and 700° C. whereby ceramizable glass ... | 07/13/1999 |
| 5902368 | Method for the heat-softened severance of glass tubes or plates Disclosed is a method for the heat-softened severance of thin-walled glass tubes or plates with a wall thickness of no more than 0.2 mm, wherein the glass is softened on a width of no more than 0.4 mm, the softened area is reduced by drawing to a wall thi... | 05/11/1999 |
| 5900285 | Method of making a vessel having a wall surface having a barrier coating A plastic vessel has a barrier coating comprising sequentially arranged barrier layers of organic polymer and of inorganic oxides, nitrides or oxynitrides. The barrier coating preferably has at least two inorganic barrier layers. The thickness of the inor... | 05/04/1999 |
| 5895768 | Chemically prestressable aluminosilicate glass and products made therefrom The chemically prestressable glass having a low bubble count and bubble size has the following composition in mol %, based on a total amount of oxides present, SiO2 from 63.0 to 67.5 mol %, Al2 O3 from 9.5 to 12.0 mol %, N... | 04/20/1999 |
| 5893359 | Arrangement for assembling and mounting a built-in cooktop The present invention relates to an arrangement for assembling and mounting a built-in cooktop such as a glass-ceramic cooktop wherein the cooktop is seated latchably secured from above in a countertop cutout provided therefor. Tolerance problems between ... | 04/13/1999 |
| 5885713 | Fire-resistant glass containing a gel with improved melting resistance, and process for the preparation thereof Fire-resistant glass, produced by placing between two panes of glass a gel former containing a) an acid aluminum phosphate, b) a reaction product of boric acid with an alkanolamine and one or more alkali metal compounds, and heating the glass to convert t... | 03/23/1999 |
| 5876472 | Method for producing a chemically pretensioned glass body The invention is directed to a method of producing a chemically pretensioned glass body. In the method, a glass body is provided having a composition in percent by weight on oxide basis: SiO2 70-85; B2 O3 8-15; Na2 | 03/02/1999 |
| 5846280 | Process for production of chemically prestressed glass The process for producing a chemically prestressed glass of very high surface quality includes subjecting an Li2 O-free starting glass from the SiO2 -Al2 O3 -M2 O-MO system which also contains TiO | 12/08/1998 |
| 5837025 | Method of producing fine-particle multicomponent glass powders for use as a glass flow for producing layers and decorations on glass, glass ceramic or ceramic The invention is directed to a method for producing low sintering fine-particle multicomponent glass powder having a particle size of the primary particle in the nanometer range. The method utilizes microemulsion techniques with subsequent separation of t... | 11/17/1998 |
| 5813395 | Device for protecting rims in glass or ceramic bodies The invention provides a device for clasp the rims of openings in shaped bodies made of glass ceramic, glass or ceramic, especially openings for the passage of atmospheric gas burners on cooking hobs or stovetops, from mechanical damage and for preventing... | 09/29/1998 |
| 5809680 | Arrangement for displaying information and operating states on a cooking apparatus An arrangement displays information and operating states on an apparatus such as a cooking apparatus having a plate made of glass and/or glass ceramic and defining a lower surface and a transparent upper surface area where the information is viewed by an ... | 09/22/1998 |
| 5800157 | Gas burner having a burner plate made of fibrous material and with reduced sound generation The gas burner according to the invention has a burner chamber housing, a mixing pipe connected to the burner chamber housing for supplying a gas/air mixture, a burner plate made of fibrous material and attached to the burner chamber housing at edge regio... | 09/01/1998 |
| 5800156 | Radiant burner with a gas-permeable burner plate Disclosed is a radiant burner with a burner chamber and a gas-permeable burner plate made of ceramic or metal, especially for cooking areas or individual cooking locations, the heating surface of which is composed of glass ceramic, the gas-permeable burne... | 09/01/1998 |
| 5770535 | Alkali-free aluminoborosilicate glass and its use An alkali-free aluminoborosilicate glass preferably with a thermal expansion /300 of about 3.7 ×10-6 /K, an annealing temperature OKP of above 700° C., a treatment temperature VA of less than 1220° C., and very... | 06/23/1998 |
| 5759930 | Substantially spherical particles of lithium silicates with improved mechanical properties and improved surface quality Substantially spherical particles of lithium silicates with improved mechanical properties and improved surface quality are provided, which are particularly suited for use as breeding material for tritium. The particles are characterised in that they cont... | 06/02/1998 |
| 5750448 | Copper(II) oxide-containing aluminophosphate glasses The invention relates to a copper(II) oxide-containing aluminophosphate glass having good chemical resistance, very good devitrification stability, high transmission at wavelengths in the range from 350 to 550 nm and a refractive index nd of fr... | 05/12/1998 |
| 5736207 | Vessel of plastic having a barrier coating and a method of producing the vessel A plastic vessel has a barrier coating comprising sequentially arranged barrier layers of organic polymer and of inorganic oxides, nitrides or oxynitrides. The barrier coating preferably has at least two inorganic barrier layers. The thickness of the inor... | 04/07/1998 |
| 5723220 | Removal of halos from glass-ceramic articles decorated with a ceramic color For removing halo formation, which often occurs on glass-ceramic articles decorated with a ceramic color, a layer of SiO2 is applied to the glass-ceramic article after the glass-ceramic color has been burnt-in. The layer is preferably 40-200 nm... | 03/03/1998 |
| 5716712 | Glass-ceramic article decorated with ceramic colorings and method for making the same A glass-ceramic article decorated with ceramic colorings has a first coloration layer over which at least a second coloration layer is arranged. The second coloration layer at least partially overlaps the first coloration layer. The first coloration layer... | 02/10/1998 |
| 5712705 | Arrangement for analysis of substances at the surface of an optical sensor Arrangement for analysis of substances at or near the surface of an optical sensor with at least one wave-guiding film and at least one multidiffraction grating coupler for in-coupling and out-coupling of light beams, in which at least two light beams enc... | 01/27/1998 |
| 5709821 | Gel formers having reduced gelling time and forming gels with improved melting resistance Gel formers comprising acid aluminum phosphate and a reaction product of boric acid and an alkanolamine, and further comprising alkali metal compounds in the aluminum: alkali metal ratio of 1:1.3-2.5 require short gelling times, and form gels having impro... | 01/20/1998 |
| 5656558 | Fire retardant safety glass Hard glass fire retardant glasses can be tempered in a conventional air tempering plant having heat transmission values of approximately 200-500 W/(m2 ×K) yielding in the tempered state a fire resistance period of at least 30 minutes according... | 08/12/1997 |