Patents by Inventor William M. Giffen, Jr.

William M. Giffen, Jr. 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).

  • Semipermeable membranes prepared from polymers containing adjacent, pendent carboxy groups
    Patent number: 4663050
    Abstract: Semipermeable membranes useful for separating mixtures of ethanol and water into enriched fractions of each are prepared by cross-linking 50-90 weight percent of at least one polymer containing pendent, adjacent carboxy groups with 10-50 weight percent of at least one diamine. Membranes prepared from copolymers of maleic anhydride and styrene cross-linked with a polyoxyalkylene diamine are exemplary. These membranes are also useful in gas separation processes, such as separating oxygen from nitrogen.
    Type: Grant
    Filed: June 1, 1983
    Date of Patent: May 5, 1987
    Assignee: Standard Oil Company
    Inventors: George S. Li, William M. Giffen, Jr.
  • Imidized surface protection for maleic anhydride interpolymer articles
    Patent number: 4508787
    Abstract: A protective coating which is resistant to attack by basic solutions is formed from interpolymers containing maleic anhydride (MAH). An article is coated with a solution of the dissolved ammonium or amine salts of the MAH interpolymer, or if the article itself contains MAH the salts may alternatively be formed on the surface of the article by applying a basic solution containing the ammonium or amine ions. The article is then dried and heated at a temperature sufficient to form the cyclic imide structure from the ammonium or amine salt of the MAH, typically about 160 to 200.degree. C.
    Type: Grant
    Filed: December 17, 1980
    Date of Patent: April 2, 1985
    Assignee: The Standard Oil Company
    Inventors: William M. Giffen, Jr., George S. Li, Arthur F. Miller
  • Method for manufacturing a fiber-reinforced thermoplastic molded article
    Patent number: 4393020
    Abstract: Molded fiber-reinforced thermoplastic articles are prepared by a novel two-step process involving an in situ polymerization of monomers onto the fiber followed by compression molding of the product.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: July 12, 1983
    Assignee: The Standard Oil Company
    Inventors: George S. Li, John F. Jones, William M. Giffen, Jr.
  • Metal coatings from nitrile copolymer latexes
    Patent number: 4329401
    Abstract: Metal surfaces such as steel, tin-plated steel, and aluminum are coated and protected from corrosion by means of a coating comprising a latex of a high nitrile polymer.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: May 11, 1982
    Assignee: The Standard Oil Company
    Inventors: Herbert Talsma, William M. Giffen, Jr.
  • Can coatings from nitrile copolymer latexes
    Patent number: 4238535
    Abstract: Metal surfaces such as steel, tin-plated steel, and aluminum are coated and protected from corrosion by means of an impermeable coating from a latex of a high nitrile polymer.
    Type: Grant
    Filed: February 17, 1978
    Date of Patent: December 9, 1980
    Assignee: Standard Oil Company
    Inventors: Herbert Talsma, William M. Giffen, Jr.
  • Process of polymerizing acrylonitrile copolymers employing terpinolene or gamma terpinene as a chain modifier
    Patent number: 4081592
    Abstract: Acrylonitrile copolymers having controlled molecular weight are prepared using terpinolene or gamma terpinene as chain length modifier.
    Type: Grant
    Filed: February 17, 1977
    Date of Patent: March 28, 1978
    Assignee: The Standard Oil Company
    Inventors: Brandford E. Giddings, Gerald P. Coffey, William M. Giffen, Jr., Herbert F. Mazeke
  • Impact improvement of rubber-modified nitrile resins
    Patent number: 4043947
    Abstract: The impact resistance of rubber-modified high-nitrile thermoplastic resins is greatly improved by including certain oils such as triethyl phosphate, 2-ethyl hexanoic acid, 2,4-di-t-butyl phenol, trimethyl phosphate, tributyl phosphate, 4-hexyl resorcinol, epoxidized soybean oil, 2,6-di-t-butyl-4-methyl phenol, and p-nonyl phenol therein.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: August 23, 1977
    Assignee: Standard Oil Company
    Inventors: Herbert Talsma, William M. Giffen, Jr.
  • Impact improvement of rubber-modified nitrile resins
    Patent number: 4041005
    Abstract: The impact resistance of rubber-modified high-nitrile thermoplastic resins is greatly improved by including essential oils therein.
    Type: Grant
    Filed: January 15, 1976
    Date of Patent: August 9, 1977
    Assignee: The Standard Oil Company
    Inventors: Herbert Talsma, William M. Giffen, Jr.