Patents by Inventor Herbert I. Scher
Herbert I. Scher has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5260006Abstract: A method and apparatus for continuous casting of polymerizable thermosetting materials comprises mixing the materials with controlled amounts of two or more catalyst groups and passing said mixture through two or more series of heating stages. The initially gelled mixture which has not yet undergone excessive shrinkage is mechanically isolated from the ungelled mixture.Type: GrantFiled: November 22, 1991Date of Patent: November 9, 1993Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar, Richard R. Baehr, Jr.
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Patent number: 5183600Abstract: A method and apparatus for continuous casting of polymerizable materials that shrink during polymerization includes rapidly heating a moving matrix substantially uniformly throughout its cross section by radio frequency energy to initiate polymerization and maintaining the matrix thereafter in substantial thermal isolation such that substantially adiabatic polymerization occurs.Type: GrantFiled: July 19, 1991Date of Patent: February 2, 1993Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar, Richard R. Baehr, Jr.
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Patent number: 4971855Abstract: A glossy laminate is made using highly polished caul plates, the laminate having superior sliding can wear resistance, and without damaging the plates. This result is effected by use of the technology of Scher et al. U.S. Pat. No. 4,255,480; O'Dell et al. U.S. Pat. No. 4,491,137 and 4,567,087; and/or Ungar et al. U.S. Pat. No. 4,713,138, except that the particles size of the grit is maintained at less than 9 micrometers. In this way a glossy laminate is obtained which retains its glossy appearance under normal wear conditions, and without rapid destruction of the expensive polished caul plates.Type: GrantFiled: May 2, 1988Date of Patent: November 20, 1990Assignee: Nevamar CorporationInventors: Joseph Lex, Robin D. O'Dell, Herbert I. Scher, Israel S. Ungar
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Patent number: 4713138Abstract: An improved process of making abrasion-resistant decorative laminate without overlay comprises simultaneously impregnating and coating a laminate decor sheet with a mixture of the liquid impregnating resin and an abrasion-resistant composition of microcrystalline cellulose and abrasion-resistant mineral particles such as alumina. The microcrystalline cellulose functions not only as a binder material in the product, but also serves to maintain the mineral particles in suspension in the liquid resin. The mixture is deposited onto the top surface of the decor sheet which absorbs the liquid resin leaving on the upper surface thereof an ultra-thin layer of the abrasion-resistant composition plus a small amount of resin. After drying, the decor sheet is ready for use in the manufacture of high and low pressure decorative laminates.Type: GrantFiled: December 26, 1984Date of Patent: December 15, 1987Assignee: Nevamar CorporationInventors: Israel S. Ungar, Nelson L. O'Neill, Herbert I. Scher, Robin D. O'Dell
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Patent number: 4567087Abstract: The scuff resistance of high-pressure laminated plastic is improved by incorporating in or very near the surface thereof, finely divided polyethylene wax having a particle size of about 1-25 microns and a melting point of preferably 220.degree.-230.degree. F. The wax is incorporated as part of an abrasion-resistant coating mixture applied to the face of an unimpregnated decor paper sheet in an ultra-thin layer, which layer is dried at a temperature below the wax melting point and then impregnated with conventional melamine-formaldehyde resin. The impregnated sheet is placed onto a sheet of convention phenolic resin impregnated core sheets and consolidated in the conventional way under heat and pressure. During consolidation, the wax particles "bloom", or migrate to the surface. The finished laminate surface has greatly improved scuff resistance.Type: GrantFiled: June 28, 1983Date of Patent: January 28, 1986Assignee: Nevamar CorporationInventors: Robin D. O'Dell, Israel S. Ungar, Herbert I. Scher
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Patent number: 4532170Abstract: The scuff resistance of a high-pressure laminate is improved by incorporating in or very near the surface thereof, finely divided polyethylene wax preferably having a particle size of about 1-25 microns and a melting point of 220.degree.-230.degree. F. The wax is incorporated as part of a coating mixture applied to the face of an unimpregnated decor paper sheet in an ultra-thin layer, which layer is dried at a temperature below the wax melting point and then impregnated with conventional melamine-formaldehyde resin. The impregnated sheet is placed onto a sheet of convention phenolic resin impregnated core sheets and consolidated in the conventional way under heat and pressure. During consolidation, the wax particles "bloom", or migrate to the surface. The finished laminate surface has greatly improved scuff resistance.Type: GrantFiled: July 25, 1984Date of Patent: July 30, 1985Assignee: Nevamar CorporationInventors: Robin D. O'Dell, Israel S. Ungar, Herbert I. Scher
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Patent number: 4520062Abstract: Highly abrasion-resistant transfer coatings are provided on a wide variety of substrates, thermoplastic or thermosetting, by transfer coating from a mold surface or a flexible web, such as by use of a heat transfer tape, an ultra-thin coating consisting essentially of a non-resinous binder material such as microcrystalline cellulose together with mineral abrasive particles, preferably alumina or a mixture of silica and alumina which have been heated together at a temperature of at least 140.degree. F., the ultra-thin coating also preferably containing a silane and a small quantity of a sticking agent such as a thermoplastic or thermosetting resin.Type: GrantFiled: September 2, 1983Date of Patent: May 28, 1985Assignee: Nevamar CorporationInventors: Israel S. Ungar, Herbert I. Scher, Nelson L. O'Neill
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Patent number: 4517235Abstract: Highly abrasion-resistant transfer coatings are provided on a wide variety of substrates, thermoplastic or thermosetting, by transfer coating from a mold surface or a flexible web, such as by use of a heat transfer tape, an ultra-thin coating consisting essentially of a non-resinous binder material such as microcrystalline cellulose together with mineral abrasive particles, preferably alumina or a mixture of silica and alumina which have been heated together at a temperature of at least 140.degree. F., the ultra-thin coating also preferably containing a silane and a small quantity of a sticking agent such as a thermoplastic or thermosetting resin.Type: GrantFiled: November 16, 1982Date of Patent: May 14, 1985Assignee: Nevamar CorporationInventors: Israel S. Ungar, Herbert I. Scher, Nelson L. O'Neill
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Patent number: 4499137Abstract: The scuff resistance of a high-pressure laminate is improved by incorporating in or very near the surface thereof, finely divided polyethylene wax preferably having a particle size of about 1-25 microns and a melting point of 220.degree.-230.degree. F. The wax is incorporated as part of a coating mixture applied to the face of an unimpregnated decor paper sheet in an ultra-thin layer, which layer is dried at a temperature below the wax melting point and then impregnated with conventional melamine-formaldehyde resin. The impregnated sheet is placed onto a sheet of convention phenolic resin impregnated core sheets and consolidated in the conventional way under heat and pressure. During consolidation, the wax particles "bloom", or migrate to the surface. The finished laminate surface has greatly improved scuff resistance.Type: GrantFiled: August 9, 1983Date of Patent: February 12, 1985Assignee: Nevamar CorporationInventors: Robin D. O'Dell, Israel S. Ungar, Herbert I. Scher
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Patent number: 4430375Abstract: An abrasion-resistant laminate is prepared by providing an ultra thin coating of mineral particles and micro crystalline cellulose on the surface of conventional printed paper, followed by impregnating the paper with a conventional laminating resin, and then using the print paper so obtained in a laminating process without the necessity of using an overlay sheet.Type: GrantFiled: April 15, 1983Date of Patent: February 7, 1984Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar
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Patent number: 4400423Abstract: An abrasion-resistant laminate is prepared by providing an ultra thin coating of micro-crystalline cellulose overcoated with an ultra thin layer of mineral particles and micro crystalline cellulose on the surface of conventional printed paper, followed by impregnating the paper with a conventional laminating resin, and then using the print paper so obtained in a laminating process without the necessity of using an overlay sheet.Type: GrantFiled: September 1, 1981Date of Patent: August 23, 1983Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar
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Patent number: 4395452Abstract: An abrasion-resistant laminate is prepared by providing an ultra thin coating of mineral particles and micro crystalline cellulose on the surface of conventional printed paper, followed by impregnating the paper with a conventional laminating resin, and then using the print paper so obtained in a laminating process without the necessity of using an overlay sheet.Type: GrantFiled: September 2, 1981Date of Patent: July 26, 1983Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar
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Patent number: 4327141Abstract: An abrasion-resistant laminate is prepared by providing an ultra thin coating of micro-crystalline cellulose overcoated with an ultra thin layer of mineral particles and micro crystalline cellulose on the surface of conventional printed paper, followed by impregnating the paper with a conventional laminating resin, and then using the print paper so obtained in a laminating process without the necessity of using an overlay sheet.Type: GrantFiled: April 1, 1980Date of Patent: April 27, 1982Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar
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Patent number: 4305987Abstract: An abrasion-resistant laminate is prepared by providing an ultra thin coating of mineral particles and micro crystalline cellulose on the surface of conventional printed paper, followed by impregnating the paper with a conventional laminating resin, and then using the print paper so obtained in a laminating process without the necessity of using an overlay sheet.Type: GrantFiled: April 1, 1980Date of Patent: December 15, 1981Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar
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Patent number: 4263081Abstract: An abrasion-resistant laminate is prepared by providing an ultra thin coating of micro-crystalline cellulose overcoated with an ultra thin layer of mineral particles and micro crystalline cellulose on the surface of conventional printed paper, followed by impregnating the paper with a conventional laminating resin, and then using the print paper so obtained in a laminating process without the necessity of using an overlay sheet.Type: GrantFiled: December 6, 1978Date of Patent: April 21, 1981Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar
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Patent number: 4255480Abstract: An abrasion-resistant laminate is prepared by providing an ultra thin coating of mineral particles and micro crystalline cellulose on the surface of conventional printed paper, followed by impregnating the paper with a conventional laminating resin, and then using the print paper so obtained in a laminating process without the necessity of using an overlay sheet.Type: GrantFiled: February 22, 1978Date of Patent: March 10, 1981Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar
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Patent number: 4154882Abstract: A decorative high pressure laminate having registered color and embossing is produced by effecting simultaneous embossing and laminating using a three dimensional press plate acting against an overlay sheet containing high flow melamine resin and pigment, so that during the pressing operation the resin and pigment flows laterally from the high pressure areas to the low pressure areas with the result that the underlying print sheet is visible through the overlay sheet in the high pressure areas while the pigment in the overlay sheet in the low pressure areas mask the print sheet.Type: GrantFiled: February 10, 1978Date of Patent: May 15, 1979Assignee: Nevamar CorporationInventors: Israel S. Ungar, Herbert I. Scher, Delbert A. Williams
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Patent number: 4093766Abstract: A decorative high pressure laminate having registered color and embossing is produced by effecting a simultaneous embossing and laminating using a three-dimensional press plate acting against an overlay sheet containing high flow melamine resin and pigment beneath which lies a melamine resin impregnated print sheet and below that an underlay sheet containing high flow melamine resin and pigment of another color. During the pressing operation the resin and pigment in the overlay flow laterally from the high pressure areas to the low pressure areas with the result that the underlying print sheet is visible through the overlay sheet in the high pressure areas while the pigment in the overlay sheet in the low pressure areas masks the print sheet. In areas of even lower pressure the color from the underlay sheet strikes through to the surface to provide a third color.Type: GrantFiled: May 16, 1977Date of Patent: June 6, 1978Assignee: Exxon Research and Engineering CompanyInventors: Herbert I. Scher, Joseph A. Lex, Israel S. Ungar
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Patent number: RE31373Abstract: A decorative high pressure laminate having registered color and embossing is produced by effecting simultaneous embossing and laminating using a three dimensional press plate acting against an overlay sheet containing high flow melamine resin and pigment, so that during the pressing operation the resin and pigment flows laterally from the high pressure areas to the low pressure areas with the result that the underlying print sheet is visible through the overlay sheet in the high pressure areas while the pigment in the overlay sheet in the low pressure areas mask the print sheet.Type: GrantFiled: December 7, 1978Date of Patent: September 6, 1983Assignee: Nevamar CorporationInventors: Israel S. Ungar, Herbert I. Scher, Delbert A. Williams
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Patent number: RE32152Abstract: An abrasion-resistant laminate is prepared by providing an ultra thin coating of mineral particles and micro crystalline cellulose on the surface of conventional printed paper, followed by impregnating the paper with a conventional laminating resin, and then using the print paper so obtained in a laminating process without the necessity of using an overlay sheet.Type: GrantFiled: November 4, 1983Date of Patent: May 20, 1986Assignee: Nevamar CorporationInventors: Herbert I. Scher, Israel S. Ungar