Patents by Inventor Larry D. Rich
Larry D. Rich 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: 6761746Abstract: A sanding disc particularly useful for smoothing drywall. The sanding disc includes a circular abrasive disc having an abrasive surface, and a circular foam disc smaller in diameter than the abrasive disc which is co-axially adhered to the surface of the abrasive disc opposite its abrasive surface. The abrasive disc has a circular central portion along which the surface defined by the abrasive is generally planar, and has an annular peripheral portion extending from its central portion to its peripheral surface along which its surface defined by the abrasive is generally cylindrically convex to position the peripheral surface of the abrasive disc in a plane passing through the foam disc.Type: GrantFiled: February 12, 2003Date of Patent: July 13, 2004Assignee: 3M Innovative Properties CompanyInventors: Larry D. Rich, Galen A. Fitzel
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Publication number: 20030119437Abstract: A sanding disc particularly useful for smoothing drywall. The sanding disc includes a circular abrasive disc having an abrasive surface, and a circular foam disc smaller in diameter than the abrasive disc which is co-axially adhered to the surface of the abrasive disc opposite its abrasive surface. The abrasive disc has a circular central portion along which the surface defined by the abrasive is generally planar, and has an annular peripheral portion extending from its central portion to its peripheral surface along which its surface defined by the abrasive is generally cylindrically convex to position the peripheral surface of the abrasive disc in a plane passing through the foam disc.Type: ApplicationFiled: February 12, 2003Publication date: June 26, 2003Applicant: 3M Innovative Properties CompanyInventors: Larry D. Rich, Galen A. Fitzel
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Patent number: 6530830Abstract: A sanding disc particularly useful for smoothing drywall. The sanding disc includes a circular abrasive disc having an abrasive surface, and a circular foam disc smaller in diameter than the abrasive disc which is co-axially adhered to the surface of the abrasive disc opposite its abrasive surface. The abrasive disc has a circular central portion along which the surface defined by the abrasive is generally planar, and has an annular peripheral portion extending from its central portion to its peripheral surface along which its surface defined by the abrasive is generally cylindrically convex to position the peripheral surface of the abrasive disc in a plane passing through the foam disc.Type: GrantFiled: March 19, 2001Date of Patent: March 11, 2003Assignee: 3M Innovative Properties CompanyInventors: Larry D. Rich, Galen A. Fitzel
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Publication number: 20020132573Abstract: A sanding disc particularly useful for smoothing drywall. The sanding disc includes a circular abrasive disc having an abrasive surface, and a circular foam disc smaller in diameter than the abrasive disc which is co-axially adhered to the surface of the abrasive disc opposite its abrasive surface. The abrasive disc has a circular central portion along which the surface defined by the abrasive is generally planar, and has an annular peripheral portion extending from its central portion to its peripheral surface along which its surface defined by the abrasive is generally cylindrically convex to position the peripheral surface of the abrasive disc in a plane passing through the foam disc.Type: ApplicationFiled: March 19, 2001Publication date: September 19, 2002Applicant: 3M Innovative Properties companyInventors: Larry D. Rich, Galen A. Fitzel
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Patent number: 5897928Abstract: Methods and articles for reinforcing castable compositions through the use of reinforcing elements maintained in a close-packed alignment in a dispersible containment means.Type: GrantFiled: April 7, 1995Date of Patent: April 27, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: James F. Sanders, Larry D. Rich, Clifford N. MacDonald, L. Max Hurlocker
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Patent number: 5807458Abstract: Methods and articles for reinforcing castable compositions through the use of reinforcing elements maintained in a close-packed alignment in a dispersible containment means.Type: GrantFiled: May 15, 1995Date of Patent: September 15, 1998Assignee: Minnesota Mining & Manufacturing CompanyInventors: James F. Sanders, Larry D. Rich, Clifford N. MacDonald, L. Max Hurlocker
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Patent number: 5702509Abstract: A self-emulsifying, liquid treatment composition comprises the polysiloxane reaction product of (a) at least one alkoxysilane, alkoxysiloxane, or siloxane compound comprising at least one hydrophobic moiety selected from the group consisting of alkyl, aryl, aralkyl, and alkaryl moieties; (b) at least one alkoxysilane, alkoxysiloxane, or siloxane compound comprising at least one hydrophilic moiety selected from the group consisting of protonated and unprotonated azaalkyl and silyl-containing azaalkyl moieties; and (c) at least one fluorine-containing alkoxysilane compound which is capable of reaction with component (a) and/or component (b) and which comprises at least one perfluoroalkyl group having at least four carbon atoms and optionally containing one or more catenary ether oxygen atoms. The composition can be used to render substrates, especially porous substrates (e.g., concrete, wood, or masonry), both water- and oil-repellent.Type: GrantFiled: December 22, 1995Date of Patent: December 30, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mark J. Pellerite, Larry D. Rich, James F. Sanders
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Patent number: 5527931Abstract: The present invention relates to organosilane compounds used for treating porous substrates to render them repellent to water-based and oil-based challenges and to enhance the cleanibility of the protected surfaces from such challenges.Type: GrantFiled: June 27, 1994Date of Patent: June 18, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Larry D. Rich, James F. Sanders
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Patent number: 4893436Abstract: A back up pad of felted polyurethane foam for use on a vibrating or oscillating sanding device that both efficiently transfers driving forces between the surfaces of the pad to drive a sheet of coated abrasive adhered to its outer surface against a workpiece, and restricts chattering and bouncing of the sanding device on the workpiece.Type: GrantFiled: February 25, 1988Date of Patent: January 16, 1990Assignee: Minnesota Mining and Manufacturing CompanyInventor: Larry D. Rich
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Patent number: 4714644Abstract: A sanding pad particularly useful for simultaneously intersecting surfaces that form sanding inside or outside corners. The pad comprises a stiff rectangular backing sheet having through slits along closely spaced parallel lines, with the slits along each line forming most of the line and being spaced by a plurality of unslit parts of the sheet. A coating of abrasive granules is adhered along a first surface of the sheet, and a layer of resiliently compressible foam is adhered on and coextensive with a second surface of the backing sheet which affords bending the backing sheet at about a right angle along one of the lines to deform the foam adjacent the line about which said sheet is bent while retaining in generally planar condition the two portions of the sheet on opposite sides of the line about which the sheet is bent.Type: GrantFiled: December 30, 1986Date of Patent: December 22, 1987Assignee: Minnesota Mining and Manufacturing CompanyInventor: Larry D. Rich
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Patent number: 3961961Abstract: A positive and negative developable photosensitive composition including a photopolymerizable monomer, photoinitiator, and a blend of polymers, one an acid soluble amino containing polymer, the other a compatible, acid insoluble, film-forming, polymer. The composition, which can be developed positively with dilute aqueous acid or negatively with dilute base, is useful in silk screen printing and as a photoresist composition in general.Type: GrantFiled: November 20, 1972Date of Patent: June 8, 1976Assignee: Minnesota Mining and Manufacturing CompanyInventor: Larry D. Rich