Patents by Inventor Norman A. Gac

Norman A. Gac 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).

  • Ionic emulsion polymers and their preparation
    Patent number: 6228907
    Abstract: Two component water-based coatings, inks, adhesives and sealants prepared by reacting enhanced molecular weight epoxy emulsions with amine curatives.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: May 8, 2001
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Lowell O. Cummings, Patrick A. Terrizzi, Norman A. Gac
  • Single package ionic emulsion polymers and their preparation
    Patent number: 6121350
    Abstract: One component water-based coatings, inks, adhesives and sealants comprising enhanced molecular weight epoxy emulsions and inactivated amines.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: September 19, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Lowell O. Cummings, Patrick A. Terrizzi, Norman A. Gac
  • Ionic emulsion polymers and their preparation
    Patent number: 6063840
    Abstract: Two component water-based coatings, inks, adhesives and sealants prepared by reacting enhanced molecular weight epoxy emulsions with amine curatives.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: May 16, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Lowell O. Cummings, Patrick A. Terrizzi, Norman A. Gac
  • Ionic emulsion polymers and their preparation
    Patent number: 5766768
    Abstract: Two component water-based coatings, inks, adhesives and sealants prepared by reacting enhanced molecular weight epoxy emulsions with amine curatives.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: June 16, 1998
    Assignee: Adhesive Coating Co.
    Inventors: Lowell O. Cummings, Patrick A. Terrizzi, Norman A. Gac
  • Single package ionic emulsion polymers and their preparation
    Patent number: 5612143
    Abstract: One component water-based coatings, inks, adhesives and sealants comprising enhanced molecular weight epoxy emulsions and inactivated amines.
    Type: Grant
    Filed: June 9, 1995
    Date of Patent: March 18, 1997
    Assignee: Adhesive Coatings Co.
    Inventors: Lowell O. Cummings, Patrick A. Terrizzi, Norman Gac
  • Single package ionic emulsion polymers and their preparation
    Patent number: 5441996
    Abstract: One component water-based coatings, inks, adhesives and sealants comprising enhanced molecular weight epoxy emulsions and inactivated amines.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: August 15, 1995
    Assignee: Adhesive Coatings Co.
    Inventors: Lowell O. Cummings, Patrick A. Terrizzi, Norman Gac
  • Method of covering an electrical connection or cable with a fluoroelastomer mixture
    Patent number: 4910390
    Abstract: Curable compositions which are useful for encapsulating electrical connections and for joining metals to metals, and which comprise a mixture of high and low molecular weight fluorocarbon elastomers. Preferred compositions comprise a mixture of three fluorocarbon elastomers, the first having a Mooney viscosity at 121.degree. C. of at least 120, the second a Mooney viscosity at 121.degree. C. of 80 to 110, and the third a Brookfield viscosity at 100.degree. C. of 1,000 to 4,000 centipoises, in amounts 5 to 50%, 25 to 70% and 5 to 50% respectively, based on the weight of the polymeric component. The compositions can be easily molded under heat and pressure, and after they have been cured, they have remarkable resistance to degradation by hot liquids, even under pressure. Consequently, the compositions are very useful in the manufacture of self-regulating heaters for use in heating the production tubes of oil wells.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: March 20, 1990
    Assignee: Raychem Corporation
    Inventors: Len Barrett, Neville Batliwalla, James Rinde, Norman A. Gac
  • Method of covering an electrical connection or cable with a fluoroelastomer mixture
    Patent number: 4722758
    Abstract: Curable compositions which are useful for encapsulating electrical connections and for joining metals to metals, and which comprise a mixture of high and low molecular weight fluorocarbon elastomers. Preferred compositions comprise a mixture of three fluorocarbon elastomers, the first having a Mooney viscosity at 121.degree. C. of at least 120, the second a Mooney viscosity at 121.degree. C. of 80 to 110, and the third a Brookfield viscosity at 100.degree. C. of 1,000 to 4,000 centipoises, in amounts 5 to 50%, 25 to 70% and 5 to 50% respectively, based on the weight of the polymeric component. The compositions can be easily molded under heat and pressure, and after they have been cured, they have remarkable resistance to degradation by hot liquids, even under pressure. Consequently, the compositions are very useful in the manufacture of self-regulating heaters for use in heating the production tubes of oil wells.
    Type: Grant
    Filed: September 4, 1985
    Date of Patent: February 2, 1988
    Assignee: Raychem Corporation
    Inventors: Len Barrett, Neville Batliwalla, James Rinde, Norman A. Gac
  • Protection of cable splice
    Patent number: 4670069
    Abstract: A splice between two multiconductor cables is protected from ingress of water by a closure which is filled with an expanding foam sealant which provides pressure inside the closure sufficient to force the sealant into the interstices of the splice and the interstices between the conductors in the cable, which pressure is retained in the closure until the sealant cures or hardens.
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: June 2, 1987
    Assignee: Raychem Corp.
    Inventors: Christian A. M. Debbaut, Norman Gac, Eugene F. Lopez, Wendell W. Moyer, David Terrell, Patrick K. Tsou