Patents by Inventor Bruce Alan Gruber

Bruce Alan Gruber 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).

  • Process to prepare pressure-sensitive hybrid composite latex adhesives
    Publication number: 20040220319
    Abstract: The invention is directed to an improvement in a process for preparing an aqueous emulsion of pressure-sensitive adhesive based upon acrylic esters having a good balance of adhesive and cohesive properties and to the resulting emulsion. In the basic process, a pressure-sensitive adhesive formulation comprised of at least one ester of acrylic or methacrylic acid is polymerized in the presence of water and an emulsifier thereby forming an emulsion polymerized pressure-sensitive adhesive. The improvement resides in effecting the polymerization of said pressure-sensitive adhesive formulation comprised of at least one ester of acrylic or methacrylic acid in the presence of from 5 to 30 percent by weight of a styrene containing polymer containing at least 80 percent by weight styrene.
    Type: Application
    Filed: June 2, 2004
    Publication date: November 4, 2004
    Inventors: Bruce Alan Gruber, Frank Vito DiStefano
  • Process to prepare pressure-sensitive hybrid composite latex adhesives
    Patent number: 6747084
    Abstract: The invention is directed to an improvement in a process for preparing an aqueous emulsion of pressure-sensitive adhesive based upon acrylic esters having a good balance of adhesive and cohesive properties and to the resulting emulsion. In the basic process, a pressure-sensitive adhesive formulation comprised of at least one ester of acrylic or methacrylic acid is polymerized in the presence of water and an emulsifier thereby forming an emulsion polymerized pressure-sensitive adhesive. The improvement resides in effecting the polymerization of the pressure-sensitive adhesive formulation comprised of at least one ester of acrylic or methacrylic acid in the presence of from 5 to 30 percent by weight of a styrene containing polymer containing at least 80 percent by weight styrene.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: June 8, 2004
    Assignee: Air Products Polymers, L.P.
    Inventors: Bruce Alan Gruber, Frank Vito DiStefano
  • PROCESS TO PREPARE PRESSURE-SENSITIVE HYBRID COMPOSITE LATEX ADHESIVES
    Publication number: 20040063842
    Abstract: The invention is directed to an improvement in a process for preparing an aqueous emulsion of pressure-sensitive adhesive based upon acrylic esters having a good balance of adhesive and cohesive properties and to the resulting emulsion. In the basic process, a pressure-sensitive adhesive formulation comprised of at least one ester of acrylic or methacrylic acid is polymerized in the presence of water and an emulsifier thereby forming an emulsion polymerized pressure-sensitive adhesive. The improvement resides in effecting the polymerization of said pressure-sensitive adhesive formulation comprised of at least one ester of acrylic or methacrylic acid in the presence of from 5 to 30 percent by weight of a styrene containing polymer containing at least 80 percent by weight styrene.
    Type: Application
    Filed: September 30, 2002
    Publication date: April 1, 2004
    Inventors: Bruce Alan Gruber, Frank Vito DiStefano
  • Polymers prepared in the presence of colloidal polyurethane dispersions
    Patent number: 5977236
    Abstract: Disclosed are improved vinyl acetate/ethylene copolymers emulsion polymerized in the presence of colloidal, nonionic, water dispersible polyurethanes. The improvement resides in vinyl acetate and ethylene polymerized in the presence of a costabilizer comprising the colloidal, nonionic, water dispersible polyurethanes and polyvinyl alcohol.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: November 2, 1999
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Frank Vito DiStefano, Bruce Alan Gruber