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).

  • Publication number: 20160311080
    Abstract: 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: Application
    Filed: December 16, 2014
    Publication date: October 27, 2016
    Inventors: Edward J. Woo, Jianping Zhou, Richard C. Cotner, Craig F. Lamphere, Jaime A. Martinez
  • Patent number: 8038750
    Abstract: 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: Grant
    Filed: July 13, 2007
    Date of Patent: October 18, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: Joseph G Pribyl, Karunasena Alahapperuma, Craig F. Lamphere, Edward J. Woo
  • Publication number: 20090017727
    Abstract: 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: Application
    Filed: July 13, 2007
    Publication date: January 15, 2009
    Inventors: Joseph G. Pribyl, Karunasena Alahapperuma, Craig F. Lamphere, Edward J. Woo
  • Patent number: 7410413
    Abstract: 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: Grant
    Filed: April 27, 2006
    Date of Patent: August 12, 2008
    Assignee: 3M Innovative Properties Company
    Inventors: Edward J. Woo, Craig F. Lamphere, Gregory A. Koehnle
  • Patent number: 7278904
    Abstract: 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: Grant
    Filed: November 5, 2004
    Date of Patent: October 9, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Edward J. Woo, Donna W. Bange, Craig F. Lamphere
  • Patent number: 6638144
    Abstract: 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: Grant
    Filed: March 26, 2001
    Date of Patent: October 28, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Bruce A. Sventek, Craig F. Lamphere, Timothy L. Graf, John L. Barry
  • Publication number: 20010051494
    Abstract: 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: Application
    Filed: March 26, 2001
    Publication date: December 13, 2001
    Inventors: Bruce A. Sventek, Craig F. Lamphere, Timothy L. Graf, John L. Barry
  • Patent number: 6155910
    Abstract: 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: Grant
    Filed: September 20, 1999
    Date of Patent: December 5, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Craig F. Lamphere, Chong Yong Kim, David A. Kaisaki, Heather K. Kranz, Julia P. Williams
  • Patent number: 5989111
    Abstract: 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: Grant
    Filed: November 23, 1998
    Date of Patent: November 23, 1999
    Assignee: 3M Innovative Properties Company
    Inventors: Craig F. Lamphere, Chong Yong Kim, David A. Kaisaki, Heather K. Kranz, Julia P. Williams
  • Patent number: 5876268
    Abstract: 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: Grant
    Filed: January 3, 1997
    Date of Patent: March 2, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Craig F. Lamphere, Chong Yong Kim, David A. Kaisaki, Heather K. Kranz, Julia P. Williams
  • Patent number: 4774272
    Abstract: 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: Grant
    Filed: August 8, 1986
    Date of Patent: September 27, 1988
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Craig F. Lamphere, Jeffry S. Shaw, Leonard R. Swanson
  • Patent number: 4417291
    Abstract: 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: Grant
    Filed: September 14, 1981
    Date of Patent: November 22, 1983
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard L. Miklos, Craig F. Lamphere
  • Patent number: 4413298
    Abstract: 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: Grant
    Filed: May 5, 1981
    Date of Patent: November 1, 1983
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Roger L. Pecsok, Ray G. McCrea, Jr., Craig F. Lamphere