Patents by Inventor Robert C. Gasman
Robert C. Gasman 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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Publication number: 20040028930Abstract: A denture adhesive liner in the form of an extruded film or sheet comprising (a) a denture adhesive effective amount of a mixed partial salt of a copolymer of maleic acid and an alkyl vinyl ether and at least one cation, wherein all of said cations are selected from the group consisting of sodium, potassium, calcium, strontium, magnesium, zinc and zirconium oxy cations; (b) between about 30 and 90 wt. % of a thermoplastic polymer component; and (c) a plasticizer; wherein said composition is extrudable into a film that is capable of adhering to a wet mucous surface and/or acrylic plastic.Type: ApplicationFiled: April 8, 2003Publication date: February 12, 2004Inventors: Eddie Wong, Robert C. Gasman, Johny Ortiz
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Patent number: 6423762Abstract: A denture adhesive composition is disclosed and comprises a polymeric activator in an amount of up to about 3 percent by weight based on the total weight of the denture adhesive composition; wherein the activator is selected from the group consisting of: poly(meth)acrylic acid, poly acrylic acid, polyitaconic acid, polycitraconic acid, and a monovalent alkali metal cation salt thereof. This composition exhibits enhanced adhesive performance and reduces oozing and incidence of food occlusion.Type: GrantFiled: January 10, 2000Date of Patent: July 23, 2002Assignee: Block Drug Company, Inc.Inventors: Eddie Wong, Hal C. Clarke, Robert C. Gasman, Joseph D. Synodis, Alfred J. Smetana
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Patent number: 6276937Abstract: A denture adhesive liner contains a foamed, flexible, polymeric, self supporting layer that supports a denture adhesive and, optionally, a material for adhering the liner to a denture. The foamed self supporting layer helps provide better cushioning and a more effective gasket for the denture adhesive liner.Type: GrantFiled: December 15, 1998Date of Patent: August 21, 2001Assignee: Block Drug Company, Inc.Inventor: Robert C. Gasman
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Patent number: 6239191Abstract: A denture adhesive composition is disclosed and comprises a polymeric activator in an amount of up to about 3 percent by weight based on the total weight of the denture adhesive composition. This composition exhibits enhanced adhesive performance and reduces oozing and incidence of food occlusion. Also disclosed is a method of preparing a denture adhesive composition comprising: preparing a mixture which comprises a polymeric activator in an amount of up to about 3 percent by weight based on the total weight of the denture adhesive composition; forming a denture adhesive composition including the mixture; and recovering the denture adhesive composition. A method of making a denture adhesive composition more adhesive and less oozing is disclosed as well. This method comprises adding to the denture adhesive composition a polymeric activator in an amount of up to about 3 percent by weight based on the total weight of the denture adhesive composition.Type: GrantFiled: February 23, 1999Date of Patent: May 29, 2001Assignee: Block Drug Company, Inc.Inventors: Eddie Wong, Hal C. Clarke, Robert C. Gasman, Alfred J. Smetana, Joseph Synodis
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Patent number: 6166102Abstract: A denture adhesive comprising a copolymer salt at least partially cross-linked by lysine, histidine, arginine, nontoxic derivatives or family members of lysine, histidine or arginine and mixtures thereof.Type: GrantFiled: December 8, 1998Date of Patent: December 26, 2000Assignee: Block Drug Company, Inc.Inventors: Hyung-Kook Ahn, Robert C. Gasman, Eddie Wong
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Patent number: 6124374Abstract: An antimicrobial denture adhesive, denture cleansing creme or denture soaking or brushing composition comprises a combination of 8-hydroxyquinoline (or its salt) and at least one copper(II) salt. The composition fights denture stomatitis by inhibiting Candida albicans.Type: GrantFiled: May 29, 1998Date of Patent: September 26, 2000Assignee: Block Drug Company, Inc.Inventors: Fred G. Kolias, Eddie Wong, Robert C. Gasman
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Patent number: 6025411Abstract: A denture adhesive composition is disclosed and comprises a polymeric activator in an amount of up to about 3 percent by weight based on the total weight of the denture adhesive composition. This composition exhibits enhanced adhesive performance and reduces oozing and incidence of food occlusion. Also disclosed is a method of preparing a denture adhesive composition comprising: preparing a mixture which comprises a polymeric activator in an amount of up to about 3 percent by weight based on the total weight of the denture adhesive composition; forming a denture adhesive composition including the mixture; and recovering the denture adhesive composition. A method of making a denture adhesive composition more adhesive and less oozing is disclosed as well. This method comprises adding to the denture adhesive composition a polymeric activator in an amount of up to about 3 percent by weight based on the total weight of the denture adhesive composition.Type: GrantFiled: June 23, 1997Date of Patent: February 15, 2000Assignee: Block Drug Company, Inc.Inventors: Eddie Wong, Hal C. Clarke, Robert C. Gasman, Alfred J. Smetana, Joseph Synodis
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Patent number: 5830933Abstract: A denture adhesive composition contains a denture adhesive and a pharmacologically acceptable carrier in which the denture adhesive is a salt of a copolymer of maleic acid or anhydride and a 1 to 5 carbon atom alkyl vinyl ether having a specific viscosity of at least 4.0. The denture adhesive composition is used to adhere a denture to the oral mucosa.Type: GrantFiled: April 22, 1996Date of Patent: November 3, 1998Assignee: Block Drug Company, Inc.Inventors: Joseph Synodis, Alfred J. Smetana, Robert C. Gasman, Eddie Wong, Hal C. Clarke
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Patent number: 5750591Abstract: A denture adhesive with significantly improved hold performance is comprised of the mixed partial salts of polymethyl vinyl ether maleic acid. At least one of said salts comprises zirconium while a second salt is selected from the group consisting of calcium, zinc, magnesium, iron, strontium and mixtures thereof. Optionally, a tripartite salt formulation may be prepared utilizing sodium, lithium or potassium. The adhesives are formulated in a standard pharmaceutically acceptable vehicle comprised of waxes, oils, colorants, viscosity modifiers and the like as is known in the art. The denture adhesive may be formulated as a paste, powder or liquid which has rapid absorption characteristics for faster swelling softening and superior coalescence.Type: GrantFiled: March 3, 1997Date of Patent: May 12, 1998Assignee: The Block Drug CompanyInventors: Hal C. Clarke, Hyung-Kook Ahn, Eddie Wong, Robert C. Gasman, Alfred J. Smetana, Joseph Synodis, Tiang Shing Chang
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Patent number: 5571519Abstract: Denture cleanser tablet compositions are disclosed which include a flavoring agent in one layer and a bleaching agent in a second layer. This arrangement avoids deterioration of the tablet flavor and taste during storage.Type: GrantFiled: December 13, 1994Date of Patent: November 5, 1996Assignee: Block Drug Company, Inc.Inventors: Joseph Synodis, Robert C. Gasman, Frank Mazzella
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Patent number: 5561177Abstract: An improved denture adhesive that exhibits superior tack, adhesion, cohesive strength and spreadability characteristics is made from a hydrocarbon-free base consisting of a mixture of medium length chain triglycerides which have been mixed with a small amount of fumed silica and other components so as to improve the viscosity, spreadability and taste. Preferred triglycerides include captic and caprylic acids and in particular, a mixture of the caprylic and captic acids which are combines with fumed silica and a water soluble cellosic polymer and a synthetic methyl vinyl ether/maleic anhydride copolymer that is formulated as a paste or gel.Type: GrantFiled: June 27, 1995Date of Patent: October 1, 1996Assignee: The Block Drug CompanyInventors: Nilofar Khaledi, Eddie Wong, Joseph Synodis, Hal C. Clarke, Robert C. Gasman, Alfred J. Smetana
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Patent number: 5525652Abstract: A novel denture adhesive composition contains an adhesive mixture comprising sodium carboxymethyl cellulose and, either a partially neutralized sodium, magnesium, zinc mixed salt or a partially neutralized magnesium, zinc mixed salt of an alkyl vinyl ether maleic acid copolymer.Type: GrantFiled: August 10, 1994Date of Patent: June 11, 1996Assignee: Block Drug Company, Inc.Inventors: Hal C. Clarke, Hyung-Kook Ahn, Eddie Wong, Robert C. Gasman, Alfred J. Smetana, Joseph Synodis
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Patent number: 5369145Abstract: A denture adhesive composition contains an adhesive mixture comprising carboxymethyl cellulose and partially neutralized sodium, a salt of an alkylvinyl ether maleic acid copolymer that forms crosslinked polymer complex compounds in situ with zinc cations.Type: GrantFiled: June 14, 1993Date of Patent: November 29, 1994Assignee: Block Drug CompanyInventors: Robert C. Gasman, Eddie Wong, Hal C. Clarke, Hyung-kook Ahn
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Patent number: 4728540Abstract: A process is described for introducing into already manufactured and fabricated vinyl products special function additives which impart to the vinyl product some useful property which it did not possess before as, for example, UV resistance, mildew resistance, etc. The process involves the use of vinyl plasticizers in which the additives are readily soluble to convey the additives into already manufactured and fabricated vinyl plastic products. Special function additives include UV stabilizers, mildewcides, fragrances, fungicides, antifogging agents, biocides, disinfectants, lubricants, antioxidants, water repellents, thickeners, surfactants, bacteriacides, vinyl heat stabilizers, antistats, release agents, anti blocking agents and the like. The process involves spreading a uniform application of a solution or water emulsion of a solution of a special function additive in a liquid plasticizer on the vinyl product surface at ambient temperature.Type: GrantFiled: January 14, 1987Date of Patent: March 1, 1988Inventor: Robert C. Gasman
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Patent number: 4615910Abstract: A process is described that can be employed in the field for preventing the formation of cracks and tears in already manufactured and fabricated flexible vinyl products from plasticizer loss induced embrittlement involving replasticization by spreading on the vinyl product a uniform coating of a liquid, vinyl plasticizer at temperatures between 4.degree. C. and 60.degree. C. followed by allowing the product to remain undisturbed for up to ten days at temperatures between 4.degree. C. and 60.degree. C. when the plasticizer will have been absorbed into the interior of the vinyl product as evidenced by the surface of the product exhibiting reduced resiliency, and feeling dry and non tacky to the touch.Type: GrantFiled: April 15, 1985Date of Patent: October 7, 1986Inventor: Robert C. Gasman
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Patent number: 4283326Abstract: Poly (C.sub.2 -C.sub.4 alkylene terephthalate) molding composition containing mica and a multiphase composite polymer. The multiphase polymer has a first elastomeric phase polymerized from a monomer system including C.sub.1 -C.sub.6 alkyl acrylate as well as crosslinking and graftlinking monomers and has a final rigid thermoplastic phase polymerized in the presence of the elastomeric phase. Preferred compositions also include thermally stable reinforcing fibers such as glass fibers.Type: GrantFiled: December 26, 1979Date of Patent: August 11, 1981Assignee: GAF CorporationInventors: John J. Charles, Robert C. Gasman
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Patent number: 4246377Abstract: Molecular weight of PBT is increased by melt processing with bis azido formyl ethylenedioxy phthalate, bis azido formyl propylenedioxy phthalate and mixtures thereof.Type: GrantFiled: October 19, 1979Date of Patent: January 20, 1981Assignee: GAF CorporationInventors: John J. Charles, Robert C. Gasman
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Patent number: 4195000Abstract: Molding composition comprising: (a) copolyester of (i) a polymethylene glycol having from 2 to 6 carbon atoms, (ii) a dimeric fatty acid and (iii) an aromatic dicarboxylic acid, wherein the dimeric fatty acid comprises from 1 to 30 wt. % of the copolyester, and; (b) from about 10 to about 45 wt. % of thermally stable reinforcing fibers such as glass fibers.Type: GrantFiled: March 17, 1978Date of Patent: March 25, 1980Assignee: GAF CorporationInventors: John J. Charles, Robert C. Gasman
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Patent number: 4195011Abstract: Molding composition and molded products comprising polybutylene terephthalate containing thermally stable reinforcing fibers, such as glass fibers, having an aspect ratio of at least about 5, and between about 5 and about 70 wt. % based on total PBT composition of novaculite having an average particle size between about 3 and about 5 microns. In preferred embodiments the composition also includes amorphous thermally stable resins such as polymethyl methacrylate and poly(butylene terephthalate-co-tetramethylene oxide).Type: GrantFiled: July 11, 1977Date of Patent: March 25, 1980Assignee: GAF CorporationInventors: Robert C. Gasman, John J. Charles
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Patent number: RE36657Abstract: A denture adhesive composition contains a denture adhesive and a pharmacologically acceptable carrier in which the denture adhesive is a salt of a copolymer of maleic acid or anhydride and a 1 to 5 carbon atom alkyl vinyl ether having a specific viscosity of at least 4.0. The denture adhesive composition is used to adhere a denture to the oral mucosa.Type: GrantFiled: November 18, 1998Date of Patent: April 11, 2000Assignee: Block Drug Company, Inc.Inventors: Joseph Synodis, Alfred J. Smetana, Robert C. Gasman, Eddie Wong, Hal C. Clarke