Patents by Inventor Mark L. Mitchell, III

Mark L. Mitchell, III 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).

  • Preparation of ortho-sulfobenzoic acid anhydride by catalyzed thermolysis
    Patent number: 4408058
    Abstract: This invention relates to a process for the synthesis of ortho-sulfobenzoic acid anhydride which comprises heating a 2-sulfohalide benzoate in the presence of a catalytic amount of a Friedel-Crafts catalyst. Especially preferred in the practice of this invention is the reaction of ortho-carbomethoxybenzenesulfonyl chloride in the presence of a zinc or iron halide to produce ortho-sulfobenzoic acid anhydride.
    Type: Grant
    Filed: May 26, 1982
    Date of Patent: October 4, 1983
    Assignee: The Sherwin-Williams Company
    Inventors: Mark L. Mitchell, III, Richard P. Carr
  • Thermoplastic reinforcing adhesives and substrates coated therewith
    Patent number: 4122229
    Abstract: Copolyamides derived from mixed acids (a polymeric fatty acid and short-chain dibasic acid) and mixed amines (a polyoxyalkylene diamine and a short-chain diamine) are provided. These thermoplastic resin compositions are excellent reinforcing adhesives for flexible substrates and are particularly useful as box-toe construction resins.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: October 24, 1978
    Assignee: Emery Industries, Inc.
    Inventors: Mark L. Mitchell, III, Hubert J. Sharkey
  • Thermoplastic reinforcing adhesives and substrates coated therewith
    Patent number: 4062820
    Abstract: Copolyamides derived from mixed acids (a polymeric fatty acid and short-chain dibasic acid) and mixed amines (a polyoxyalkylene diamine and a short-chain diamine) are provided. These thermoplastic resin compositions are excellent reinforcing adhesives for flexible substrates and are particularly useful as box-toe construction resins.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: December 13, 1977
    Assignee: Emery Industries, Inc.
    Inventors: Mark L. Mitchell, III, Hubert J. Sharkey