Patents by Inventor Alan R. Kirk

Alan R. Kirk 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).

  • Patent number: 5580647
    Abstract: Abrasive articles made using a coatable, addition polymerizable binder precursor composition are described, as well as methods of making same. The compositions comprise a reactive diluent compound and preferably an addition polymerizable resin, the reactive diluent being an organic compound selected to be especially effective in solubilizing aminoplast resins.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: December 3, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Eric G. Larson, Ernest L. Thurber, Alan R. Kirk, Gregg D. Dahlke, Elizabeth C. Edblom, Don H. Kincaid
  • Patent number: 5523152
    Abstract: Organic compounds having at least one ethylenically-unsaturated group are described, the organic compounds being suitable for use in coatable compositions as reactive diluents; compounds of the invention preferably have a divalent organic linking moiety devoid of reactive groups other than optional ethylenically-unsaturated groups, and a polar organic moiety and are particularly adept in solubilizing aminoplast resins having radiation-curable pendant groups.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: June 4, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ernest L. Thurber, Eric G. Larson, Alan R. Kirk, Gregg D. Dahlke
  • Patent number: 5236472
    Abstract: Abrasive products comprising abrasive grains bonded together or bonded to a backing by means of a binder compressing an oligomeric aminoplast resin having on average at least one pendant .alpha.,.beta.-unsaturated carbonyl group per oligomeric unit. The oligomeric aminoplast resins polymerize via free radical polymerization at the site of the .alpha.,.beta.-unsaturation. Polymerization is initiated by a source of free radicals. The source of free radicals can be generated by electron beam radiation or by an appropriate curing agent or initiator upon exposure to heat or radiation energy. The coated abrasive of this invention demonstrates improved grinding performance under severe conditions as compared with coated abrasives comprising radiation curable resins heretofore known.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: August 17, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Alan R. Kirk, Eric G. Larson
  • Patent number: 5055113
    Abstract: An abrasive product comprising abrasive grains bonded together or bonded to at least one major surface of a backing sheet, by a binder formed from a precursor comprising an aminoplast resin having on average at least 1.1 pendant .alpha.,.beta.-unsaturated carbonyl groups per molecule. The binder is formed by curing the precursor at the .alpha.,.beta.-unsaturated site of the carbonyl group, by radiation energy or by heat, in the presence of an appropriate initiator system. The aminoplast resin can also contain pendant amino or hydroxy functional groups, which allow polymerization with condensation curable resins, such as phenolic, melamine, urea, urethane, and furfural resins. Polymerization at the unsaturated site of .alpha.,.beta.-unsaturated carbonyl group can be effected either by radiation energy or by heat, and curing at the sites of the amino or hydroxy functional group can be subsequently effected by heat.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: October 8, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Eric G. Larson, Alan R. Kirk
  • Patent number: 4903440
    Abstract: An abrasive product comprising abrasive grains bonded together or bonded to at least one major surface of a backing sheet, by a binder formed from a precursor comprising an aminoplast resin having on average at least 1.1 pendant .alpha.,.beta.-unsaturated carbonyl groups per molecule. The binder is formed by curing the precursor at the .alpha.,.beta.-unsaturated site of the carbonyl group, by radiation energy or by heat, in the presence of an appropriate initiator system. The aminoplast resin can also contain pendant amino or hydroxy functional groups, which allow polymerization with condensation curable resins, such as phenolic, melamine, urea, urethane, and furfural resins. Polymerization at the unsaturated site of .alpha.,.beta.-unsaturated carbonyl group can be effected either by radiation energy or by heat, and curing at the sites of the amino or hydroxy functional group can be subsequently effected by heat.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: February 27, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Alan R. Kirk, Eric G. Larson
  • Patent number: 4710515
    Abstract: Novel compounds which are 2,6-di-tertiary-butylphenols substituted in the 4 position by an acylaminophenyl group, which acylaminophenyl group is substituted by a moiety which includes a carboxyl group, are useful as inhibitors of leukotriene biosynthesis and as antiallergic agents.
    Type: Grant
    Filed: March 17, 1987
    Date of Patent: December 1, 1987
    Assignee: Riker Laboratories, Inc.
    Inventors: Alan R. Kirk, Robert A. Scherrer
  • Patent number: RE33574
    Abstract: Novel compounds which are 2,6-di-tertiary-butylphenols substituted in the 4 position by an acylaminophenyl group, which acylaminophenyl group is substituted by a moiety which includes a carboxyl group, are useful as inhibitors of leukotriene biosynthesis and as antiallergic agents.
    Type: Grant
    Filed: January 24, 1990
    Date of Patent: April 23, 1991
    Assignee: Riker Laboratories, Inc.
    Inventors: Alan R. Kirk, Robert A. Scherrer