Patents Examined by William E. Parker
  • Contact adhesives
    Patent number: 3935144
    Abstract: Polyurethane contact adhesives are produced without added solvent from polyols, amorphous thermoplastic tackifiers and 3-isocyanatomethyl-3,5,5-trimethyl-cyclohexylisocyanate and which can be applied solvent-free to a great variety of substrates.
    Type: Grant
    Filed: June 3, 1974
    Date of Patent: January 27, 1976
    Assignee: Badische Anilin- & Soda-Fabrik Aktiengesellschaft
    Inventors: Kurt Hagenweiler, Kurt Scholz
  • Crayon wax composition
    Patent number: 3933708
    Abstract: An improved crayon wax composition having a wax base, stearic acid, pigment and an additive mixture which comprises polyethylene having a molecular weight between 500,000-6,000,000 is disclosed. Use of the polyethylene in small amounts enables the replacement of higher melting point waxes with low-melting point paraffin wax of 120.degree.-140.degree.F, while still maintaining the required performance qualities of the crayon wax.
    Type: Grant
    Filed: May 24, 1973
    Date of Patent: January 20, 1976
    Assignee: Sun Oil Company of Pennsylvania
    Inventor: Robert B. Brinkman
  • Polyolefin composition
    Patent number: 3933736
    Abstract: A stabilized polyolefin composition having resistance against deterioration caused by contact with heavy metals such as copper which comprises 100 weight parts of polyolefin and 0.001-5 weight parts of N-(salicyloylamino)imide is disclosed.
    Type: Grant
    Filed: August 14, 1974
    Date of Patent: January 20, 1976
    Assignee: UBE Industries, Ltd.
    Inventors: Toshio Yoshikawa, Nagayoshi Sakamoto, Tomitada Nagamori