Patents Examined by R. J. Roche
  • Degradable starch-based agricultural mulch film
    Patent number: 3949145
    Abstract: Disclosed herein are plastic film compositions for agricultural mulch which will withstand outdoor weathering conditions for a desired time and then rapidly disintegrate. The film composition comprises starch, poly(vinyl alcohol), glycerol, and a water-resistant coating.
    Type: Grant
    Filed: February 27, 1975
    Date of Patent: April 6, 1976
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Felix H. Otey, Arthur M. Mark
  • Epoxy resin coatings cured with phototropic aromatic nitro compounds
    Patent number: 3949143
    Abstract: Photopolymerizable compositions comprising a polymerizable epoxide, vinyl ether, or other acid-catalyzed monomer and a phototropic, alkyl substituted-orthonitrobenzene containing compound are provided, which, when exposed to actinic radiation, are polymerized by the radiation produced acidic initiator.
    Type: Grant
    Filed: February 26, 1975
    Date of Patent: April 6, 1976
    Assignee: American Can Company
    Inventor: Sheldon I. Schlesinger
  • Polyurethane composition and method of preparation
    Patent number: 3942672
    Abstract: A polyurethane composition, resistant to sulfuric acid, prepared by reacting 2,2'-diaminodisulfide with an isocyanate-terminated prepolymer, itself prepared by reacting, in the presence of a 2,6-dialkylated para cresol, at least one polymeric polyol with a diphenyl methane diisocyanate.
    Type: Grant
    Filed: December 20, 1974
    Date of Patent: March 9, 1976
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Jeffrey W. Saracsan
  • Linear cut sewing tape
    Patent number: 3936944
    Abstract: A sewing tape especially adapted to provide a measured sewing guide line when using a sewing machine. The tape is in the form of a strip provided with cuts extending through the tip for separating the tape into ribbons of predetermined thickness and has suitable guide lines printed thereon some of which coincide with the cuts. The tape is held together by pressure sensitive adhesive coated on one surface of the tape which is wound under tension.
    Type: Grant
    Filed: March 18, 1974
    Date of Patent: February 10, 1976
    Inventor: Zachary Paul Byne
  • Laminar structure having an impregnated fibrous web
    Patent number: 3934067
    Abstract: A method of improving the dimensional and thermal stability of a fibrous web containing substrate is disclosed. A uniformly or randomly spun or bonded fabric or textile support is impregnated with a curable polymer resin, e.g., an epoxy-polyester resin. The impregnated resin is then fully cured whereupon a polymer resin coat is applied thereto. The coat is maintained in a partial cure state whereby a laminate comprising an internal woven or bonded fabric skeleton impregnated with a fully cured polymer resin and coated with a layer of a partially cured polymer resin is obtained.
    Type: Grant
    Filed: July 17, 1974
    Date of Patent: January 20, 1976
    Assignee: Western Electric Company, Inc.
    Inventors: Ira Bernard Goldman, John Francis Henrickson
  • Backing sheet coated with catalyst and self curing interpolymer adhesive
    Patent number: 3931444
    Abstract: Pressure-sensitive resin solutions containing an acid-epoxy self-curing interpolymer and 1,3-bis(dimethylamino)-2-hydroxypropane. The solutions exhibit improved viscosity stability and provide pressure-sensitive resin films with cohesive strength and low release values from silicone release paper.
    Type: Grant
    Filed: December 6, 1974
    Date of Patent: January 6, 1976
    Assignee: Monsanto Company
    Inventors: Lawrence W. McKenna, Donald M. Gardner