Patents by Inventor Whaite M. Clark

Whaite M. Clark 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).

  • Aqueous epoxy resin compositions and metal substrates coated therewith
    Patent number: 5082698
    Abstract: This invention relates to aqueous epoxy resin-containing compositions and to such compositions which are particularly useful for depositing coatings on metallic substrates in order to protect substrates against corrosion. The aqueous compositions generally comprise (A) an organic resin component consisting essentially of at least one water-dispersible or emulsifiable epoxy resin or a mixture of resins containing more than 50% by weight of at least one water-dispersible or emulsifiable epoxy resin, (B) chromium trioxide, and (C) water, said composition further characterized as being substantially free of strontium chromate. The aqueous compositions may also contain other ingredients including zinc and/or ferro alloys.These aqueous compositions are useful as pretreatment coatings on metal surfaces, and in particular, on steel and on galvanized and aluminized metal substrates.
    Type: Grant
    Filed: October 29, 1990
    Date of Patent: January 21, 1992
    Assignee: Morton Coatings, Inc.
    Inventors: Karl P. Anderson, Whaite M. Clark, Poli C. Yu, Richard T. Moyle
  • Aqueous epoxy resin compositions and metal substrates coated therewith
    Patent number: 5001173
    Abstract: This invention relates to aqueous epoxy resin-containing compositions and to such compositions which are particularly useful for depositing coatings on metallic substrates in order to protect substrates against corrosion. The aqueous compositions generally comprise (A) an organic resin component consisting essentially of at least one water-dispersible or emulsifiable epoxy resin or a mixture of resins containing more than 50% by weight of at least one water-dispersible or emulsifiable epoxy resin, (B) chromium trioxide, and (C) water, said composition further characterized as being substantially free of strontium chromate. The aqueous compositions may also contain other ingredients including zinc and/or ferro alloys.These aqueous compositions are useful as pretreatment coatings on metal surfaces, and in particular, on steel and on galvanized and aluminized metal substrates.
    Type: Grant
    Filed: March 8, 1988
    Date of Patent: March 19, 1991
    Assignee: Morton Coatings, Inc.
    Inventors: Karl P. Anderson, Whaite M. Clark, Poli C. Yu, Richard T. Moyle