Patents by Inventor Craig F. Lamphere
Craig F. Lamphere 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: 20160311080Abstract: An abrasive comprising abrasive particles and an adhesive matrix is provided, with the abrasive particles being distributed in the adhesive matrix, wherein the abrasive particles comprise aluminum hydroxide abrasive particles, and the adhesive matrix comprises a triacrylate, a diacrylate and an initiator. The abrasive article prepared using the abrasive of the present invention has proper wear resistance and can be used to a clean LCD panel surface without scratching the ITO coating on an LCD panel surface.Type: ApplicationFiled: December 16, 2014Publication date: October 27, 2016Inventors: Edward J. Woo, Jianping Zhou, Richard C. Cotner, Craig F. Lamphere, Jaime A. Martinez
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Patent number: 8038750Abstract: A structured abrasive article comprises a backing with a topographically structured abrasive layer secured thereto. The topographically structured abrasive layer comprises precisely-shaped abrasive composites. A solid overlayer comprising eroding particles with a Mohs scale hardness of at least 4 and a water-soluble polymer is disposed on at least a portion of the topographically structured abrasive layer. Methods of making and using the structured abrasive articles are also disclosed.Type: GrantFiled: July 13, 2007Date of Patent: October 18, 2011Assignee: 3M Innovative Properties CompanyInventors: Joseph G Pribyl, Karunasena Alahapperuma, Craig F. Lamphere, Edward J. Woo
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Publication number: 20090017727Abstract: A structured abrasive article comprises a backing with a topographically structured abrasive layer secured thereto. The topographically structured abrasive layer comprises precisely-shaped abrasive composites. A solid overlayer comprising eroding particles with a Mohs scale hardness of at least 4 and a water-soluble polymer is disposed on at least a portion of the topographically structured abrasive layer. Methods of making and using the structured abrasive articles are also disclosed.Type: ApplicationFiled: July 13, 2007Publication date: January 15, 2009Inventors: Joseph G. Pribyl, Karunasena Alahapperuma, Craig F. Lamphere, Edward J. Woo
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Patent number: 7410413Abstract: A structured abrasive article comprises a backing, a structured abrasive layer affixed to the backing, the structured abrasive layer comprising: a plurality of raised abrasive regions, each raised abrasive region consisting essentially of a close-packed plurality of pyramidal abrasive composites; and a network consisting essentially of close-packed truncated pyramidal abrasive composites, wherein the network continuously abuts and separates the raised abrasive regions from one another. The height of the pyramidal abrasive composites is greater than the height of the truncated pyramidal abrasive composites. Methods of making and using the same are also disclosed.Type: GrantFiled: April 27, 2006Date of Patent: August 12, 2008Assignee: 3M Innovative Properties CompanyInventors: Edward J. Woo, Craig F. Lamphere, Gregory A. Koehnle
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Patent number: 7278904Abstract: A method of abrading a surface of a workpiece with a structured abrasive article in the presence of a liquid comprising water and at least one of a sulfonate or sulfate anionic surfactant.Type: GrantFiled: November 5, 2004Date of Patent: October 9, 2007Assignee: 3M Innovative Properties CompanyInventors: Edward J. Woo, Donna W. Bange, Craig F. Lamphere
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Patent number: 6638144Abstract: A method of polishing and cleaning a glass surface with a single abrasive article. The abrasive article includes ceria abrasive particles dispersed in binder, the abrasive article having a textured, three-dimensional abrasive coating. The method includes contacting the glass surface with the abrasive article at a desired pressure and in the presence of water, and moving the abrasive article and glass in relation to each other under pressure. The water is believed to mediate a chemical reaction involving the ceria and the glass, thereby leaving a haze on the glass surface. With continued motion of the abrasive article in relation to the glass workpiece, without the addition of additional water, the haze is removed.Type: GrantFiled: March 26, 2001Date of Patent: October 28, 2003Assignee: 3M Innovative Properties CompanyInventors: Bruce A. Sventek, Craig F. Lamphere, Timothy L. Graf, John L. Barry
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Publication number: 20010051494Abstract: A method of polishing and cleaning a glass surface with a single abrasive article. The abrasive article includes ceria abrasive particles dispersed in binder, the abrasive article having a textured, three-dimensional abrasive coating. The method includes contacting the glass surface with the abrasive article at a desired pressure and in the presence of water, and moving the abrasive article and glass in relation to each other under pressure. The water is believed to mediate a chemical reaction involving the ceria and the glass, thereby leaving a haze on the glass surface. With continued motion of the abrasive article in relation to the glass workpiece, without the addition of additional water, the haze is removed.Type: ApplicationFiled: March 26, 2001Publication date: December 13, 2001Inventors: Bruce A. Sventek, Craig F. Lamphere, Timothy L. Graf, John L. Barry
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Patent number: 6155910Abstract: The present invention relates to a method and an article for rapidly polishing a glass workpiece surface using a structured abrasive article including cerium oxide particles dispersed in a binder. The abrasive article for rapid polishing of a glass workpiece comprising a backing and at least one polishing layer. The polishing layer comprises cerium oxide particles dispersed within a binder. The binder provides the attachment means of the at least one polishing layer to the backing. The abrasive article is capable of reducing an initial Rtm of about 0.8 .mu.m or greater on a glass test blank to a final Rtm of about 0.3 .mu.m or less in about one minute using an RPE procedure defined herein. The present invention is also directed to a method of polishing a glass workpiece using the present abrasive article.Type: GrantFiled: September 20, 1999Date of Patent: December 5, 2000Assignee: 3M Innovative Properties CompanyInventors: Craig F. Lamphere, Chong Yong Kim, David A. Kaisaki, Heather K. Kranz, Julia P. Williams
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Patent number: 5989111Abstract: The present invention relates to a method and an article for rapidly polishing a glass workpiece surface using a structured abrasive article including cerium oxide particles dispersed in a binder. The abrasive article for rapid polishing of a glass workpiece comprising a backing and at least one polishing layer. The polishing layer comprises cerium oxide particles dispersed within a binder. The binder provides the attachment means of the at least one polishing layer to the backing. The abrasive article is capable of reducing an initial Rtm of about 0.8 .mu.m or greater on a glass test blank to a final Rtm of about 0.3 .mu.m or less in about one minute using an RPE procedure defined herein. The present invention is also directed to a method of polishing a glass workpiece using the present abrasive article.Type: GrantFiled: November 23, 1998Date of Patent: November 23, 1999Assignee: 3M Innovative Properties CompanyInventors: Craig F. Lamphere, Chong Yong Kim, David A. Kaisaki, Heather K. Kranz, Julia P. Williams
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Patent number: 5876268Abstract: The present invention relates to a method and an article for rapidly polishing a glass workpiece surface using a structured abrasive article including cerium oxide particles dispersed in a binder. The abrasive article for rapid polishing of a glass workpiece comprising a backing and at least one polishing layer. The polishing layer comprises cerium oxide particles dispersed within a binder. The binder provides the attachment means of the at least one polishing layer to the backing. The abrasive article is capable of reducing an initial Rtm of about 0.8 .mu.m or greater on a glass test blank to a final Rtm of about 0.3 .mu.m or less in about one minute using an RPE procedure defined herein. The present invention is also directed to a method of polishing a glass workpiece using the present abrasive article.Type: GrantFiled: January 3, 1997Date of Patent: March 2, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Craig F. Lamphere, Chong Yong Kim, David A. Kaisaki, Heather K. Kranz, Julia P. Williams
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Patent number: 4774272Abstract: There is provided a composite sheet material for fabrication of storage envelopes for magnetic recording media, e.g., floppy diskettes. The material has a low debris count, and a fast rate of static decay as well as high stiffness and strength.Type: GrantFiled: August 8, 1986Date of Patent: September 27, 1988Assignee: Minnesota Mining and Manufacturing CompanyInventors: Craig F. Lamphere, Jeffry S. Shaw, Leonard R. Swanson
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Patent number: 4417291Abstract: Magnetic recording diskette has as the wiping fabric a flocked-fiber layer. While prior diskettes have required individual pieces of wiping fabric to be adhered to individual sheets of jacket material, the flocked-fiber layer can be applied to a roll of the jacket material continuously to provide roll stock from which individual jacket blanks can be die-cut.Type: GrantFiled: September 14, 1981Date of Patent: November 22, 1983Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard L. Miklos, Craig F. Lamphere
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Patent number: 4413298Abstract: A diskette jacket is made from biaxially-oriented polyester film containing particles of a different polymer which provide a matte finish that aesthetically masks scratches and smudges. The polyester film provides better resistance to pillowing and to scratching as compared to the polyvinylchloride diskette jackets of the prior art.Type: GrantFiled: May 5, 1981Date of Patent: November 1, 1983Assignee: Minnesota Mining and Manufacturing CompanyInventors: Roger L. Pecsok, Ray G. McCrea, Jr., Craig F. Lamphere