Patents by Inventor George D. Foss
George D. Foss 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: 5494730Abstract: Electrically conductive elements on two substrates can be electrically interconnected by an adhesive tape containing electrically conductive equiax particles that are individually positioned in the adhesive layer in a predetermined pattern. Each particle is harder than the elements it is to interconnect, so that hand pressure causes the particles to penetrate into the elements, thus creating a reliable electrical connection. Particularly useful particles are glass beads having a metallic coating that is from 0.1 to 2 .mu.m thick.Type: GrantFiled: February 8, 1994Date of Patent: February 27, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Cylde D. Calhoun, Maurice J. Fleming, George D. Foss, Richard L. Renstrom
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Patent number: 5300340Abstract: Electrically conductive elements on two substrates can be electrically interconnected by an adhesive tape containing electrically conductive equiax particles that are individually positioned in the adhesive layer in a predetermined pattern. Each particle is harder than the elements it is to interconnect, so that hand pressure causes the particles to penetrate into the elements, thus creating a reliable electrical connection. Particularly useful particles are glass beads having a metallic coating that is from 0.1 to 2 .mu.m thick.Type: GrantFiled: April 22, 1992Date of Patent: April 5, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Clyde D. Calhoun, Maurice J. Fleming, George D. Foss, Richard L. Renstrom
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Patent number: 4930266Abstract: Abrasive sheeting can produce fine finishes at surprisingly high cutting rates when its abrasive granules are individually positioned in a predetermined pattern, with an uncoated portion of virtually every granule protruding from the surface of the binder layer. Each of the abrasive granules preferably is a spherical composite of a large number of abrasive grains in a binder. For example, abrasive grains having a mean dimension of about 4 .mu.m can be bonded together to form spherical abrasive granules of virtually identical diameters, preferably within a range of from 25 to 100 .mu.m.Type: GrantFiled: May 19, 1989Date of Patent: June 5, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventors: Clyde D. Calhoun, George D. Foss, Maurice J. Fleming, Wesley J. Bruxvoort
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Patent number: 4705699Abstract: Polymeric compositions are provided in which perfluoropolyethers have been solubilized in non-fluorinated solvents by combining them with a solubilizing agent such as azotic conjugated compounds, and phosphorylated compounds. Typical of the perfluoropolyethers is ##STR1## Typical of the solubilizing agent is phosphorylated methacryloyloxyhydroxypropylisophthalate. The perfluoropolyether and the solubilizing agent are mixed to form a paste which is soluble in organic solvents such as methylethylketone. These compositions find utility as protective lubricant coatings for thin film magnetic recording media. They have the advantage that only one coating step is required in order to apply both the phosphorylated compound and the lubricating polyether. Recording media lubricated with these compositions have demonstrated excellent wear characteristics.Type: GrantFiled: February 20, 1987Date of Patent: November 10, 1987Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mario D. Burguette, George D. Foss
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Patent number: 4671999Abstract: Polymeric compositions are provided in which perfluoropolyethers have been solubilized in non-fluorinated solvents by combining them with a solubilizing agent such as azotic conjugated compounds, and phosphorylated compounds. Typical of the perfluoropolyethers is ##STR1## Typical of the solubilizing agents is phosphorylated methacryloyloxyhydroxypropylisophthalate. The perfluoropolyether and the solubilizing agent are mixed to form a paste which is soluble in organic solvents such as methylethylketone. These compositions find utility as protective lubricant coatings for thin film magnetic recording media. They have the advantage that only one coating step is required in order to apply both the phosphorylated compound and the lubricating polyether. Recording media lubricated with these compositions have demonstrated excellent wear characteristics.Type: GrantFiled: December 2, 1985Date of Patent: June 9, 1987Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mario D. Burguette, George D. Foss
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Patent number: 4569962Abstract: Polymeric compositions are provided in which perfluoropolyethers have been solubilized in non-fluorinated solvents by combining them with a solubilizing agent such as azotic conjugated compounds, and phosphorylated compounds. Typical of the perfluoropolyethers is ##STR1## Typical of the solubilizing agents is phosphorylated methacryloyloxyhydroxypropylisophthalate. The perfluoropolyether and the solubilizing agent are mixed to form a paste which is soluble in organic solvents such as methylethylketone. These compositions find utility as protective lubricant coatings for thin film magnetic recording media. They have the advantage that only one coating step is required in order to apply both the phosphorylated compound and the lubricating polyether. Recording media lubricated with these compositions have demonstrated excellent wear characteristics.Type: GrantFiled: September 19, 1983Date of Patent: February 11, 1986Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mario D. Burguette, George D. Foss
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Patent number: 4526833Abstract: A magnetic recording medium protected by a very thin, composite low surface energy covering is disclosed. The covering comprises a primer layer of a polymerized phosphorylated monomer or oligomer and an outer lubricant layer of perfluoropolyether polymer. The two layers may be polymerized in situ. The primer layer is made from monomers such as phosphorylated bis[4-methacryloyloxyhydroxypropylcarbamato-cyclohexyl]methane. The outer layer is made from a polymerizable perfluoropolyether monomer such as ##STR1## The composite low surface energy covering is especially useful for providing lubricity and corrosion resistance to a metallic thin-film magnetic recording coating.Type: GrantFiled: October 3, 1983Date of Patent: July 2, 1985Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mario D. Burguette, George D. Foss
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Patent number: 4415342Abstract: An air pollution control process employing an improved rotatable collector, which by its position becomes a filtering and adsorbing station and a combustion and desorbing station, and an oxidizer are utilized in an apparatus and process for removing airborne particulate materials and organic vapors from an air stream. The rotatable collector comprises an assembly of alternate layers of refractory microfiber, metal screens, and a thin layer of adsorbent carbon.Type: GrantFiled: April 14, 1982Date of Patent: November 15, 1983Assignee: Minnesota Mining and Manufacturing CompanyInventor: George D. Foss
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Patent number: 4404247Abstract: Magnetic recording medium protected by an ultra-thin, composite low surface energy covering provided by an inner layer of insoluble polymer and an outer layer of insoluble polymer which are made by in situ polymerization. The inner layer is made from two monomers such as a hydantoin hexacrylate and alpha-methyl styrene. The outer layer is made from polymerizable perfluoropolyether monomer having ethylenicaly unsaturated polymerizable groups. The composite low surface energy covering is especially useful for providing lubricity and corrosion resistance to a metallic thin-film magnetic recording coating.Type: GrantFiled: July 2, 1982Date of Patent: September 13, 1983Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mario Dominguez-Burguette, George D. Foss
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Patent number: 4348362Abstract: An improved rotatable collector, which by its position becomes a filtering and adsorbing station and a combustion and desorbing station, and an oxidizer are utilized in an apparatus and process for removing airborne particulate materials and organic vapors from an air stream. The rotatable collector comprises an assembly of alternate layers of refractory microfiber, metal screens, and a thin layer of adsorbent carbon.Type: GrantFiled: September 24, 1980Date of Patent: September 7, 1982Assignee: Minnesota Mining and Manufacturing CompanyInventor: George D. Foss
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Patent number: 4263061Abstract: A process is disclosed whereby there is formed a high resolution screen in which laterally directed back reflections of light produced within a luminous layer, which reflections have heretofore been generally laterally directed so as to result in decreased resolution, are minimized by the inclusion of an antireflecting surface at the back side of the luminous layer. In the present process, the antireflecting surface is formed by subjecting a substantially planar aluminum surface on a support layer to a steam treatment to convert the aluminum surface to a microstructured surface of boehmite, a hydrated aluminum oxide, having a plurality of randomly positioned leaflets extending from the surface.Type: GrantFiled: October 31, 1979Date of Patent: April 21, 1981Assignee: Minnesota Mining and Manufacturing CompanyInventors: Carol L. Fatuzzo, George D. Foss
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Patent number: 4204125Abstract: An x-ray intensifying screen is provided in which high resolution is obtained by minimizing back reflections within a luminous layer, which reflections are generally laterally directed such that light emitted from a given area within the layer is diffused. The screen includes an anti-reflecting surface at the back side of the luminous layer in which a plurality of randomly positioned leaflets extend from the surface. The layer is typically formed of a microstructured layer of boehmite, a hydrated aluminum oxide.Type: GrantFiled: March 27, 1978Date of Patent: May 20, 1980Assignee: Minnesota Mining and Manufacturing CompanyInventors: Carol L. Fatuzzo, George D. Foss