Patents by Inventor Robert L. Cook, Jr.

Robert L. Cook, 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).

  • Chromate-free protective coatings
    Patent number: 6077885
    Abstract: The invention provides chromate-free coating mixtures, and coatings formed from these mixtures, that protect an underlying aluminum or aluminum alloy substrate from corrosion. The coating mixtures include a continuous phase selected from organic polymeric compositions, or sol-gels, and a distributed phase, dispersed or dissolved throughout the continuous phase. The distributed phase includes the corrosion-inhibiting chromate-free salts. In accordance with the invention, the mixture of salts includes (1) a first salt selected from (a) the esters of rare earth metals, such as cerium and lanthanum oxalates and acetates, and (b) the vanadate salts of alkali and alkali earth metals, such as sodium metavanadate and calcium metavanadate; and (2) a second salt that is a borate salt of alkali earth metals, such as barium metaborate. In certain embodiments, the coatings of the invention include both (a), and (b), in conjunction with the borate salt (2).
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: June 20, 2000
    Assignee: The Boeing Company
    Inventors: Harold E. Hager, Chris J. Johnson, Kay Y. Blohowiak, Chun M. Wong, John H. Jones, Robert L. Cook, Jr., S. Ray Taylor
  • Chromate-free protective coatings
    Patent number: 5866652
    Abstract: The invention provides chromate-free coating mixtures, and coatings formed from these mixtures, that protect an underlying aluminum or aluminum alloy substrate from corrosion. The coating mixtures include a continuous phase selected from organic polymeric compositions, or sol-gels, and a distributed phase, dispersed or dissolved throughout the continuous phase. The distributed phase includes the corrosion-inhibiting chromate-free salts. In accordance with the invention, the mixture of salts includes (1) a first salt selected from (a) the esters of rare earth metals, such as cerium and lanthanum oxalates and acetates, and (b) the vanadate salts of alkali and alkali earth metals, such as sodium metavanadate and calcium metavanadate; and (2) a second salt that is a borate salt of alkali earth metals, such as barium metaborate. In certain embodiments, the coatings of the invention include both (a), and (b), in conjunction with the borate salt (2).
    Type: Grant
    Filed: February 27, 1996
    Date of Patent: February 2, 1999
    Assignee: The Boeing Company
    Inventors: Harold E. Hager, Chris J. Johnson, Kay Y. Blohowiak, Chun M. Wong, John H. Jones, S. Ray Taylor, Robert L. Cook, Jr.