Patents by Inventor Edward A. Hilditch

Edward A. Hilditch 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).

  • Anti-fungal compositions employing metal salts of carboxylic acids
    Patent number: 4590208
    Abstract: A mixture of zinc or copper salts of primary and/or secondary saturated acyclic carboxylic acids with zinc or copper salts of a tertiary saturated acyclic carboxylic acid has been found to be of value as a preservative for wood or many other similar degradable organic materials. The mixture can be prepared simply by mixing the salts or by reacting zinc or copper or a suitable zinc or copper compound with a mixture of the appropriate acids.
    Type: Grant
    Filed: June 14, 1984
    Date of Patent: May 20, 1986
    Assignee: Cuprinol Limited
    Inventors: Edward A. Hilditch, Robert E. Hambling, Colin R. Sparks, David A. Walker
  • Anti-fungal compositions employing metal salts of carboxylic acids
    Patent number: 4374852
    Abstract: A mixture of zinc or copper salts of primary and/or secondary saturated acyclic carboxylic acids with zinc or copper salts of a tertiary saturated acyclic carboxylic acid has been found to be of value as a preservative for wood or many other similar degradable organic materials. The mixture can be prepared simply by mixing the salts or by reacting zinc or copper or a suitable zinc or copper compound with a mixture of the appropriate acids.
    Type: Grant
    Filed: October 30, 1980
    Date of Patent: February 22, 1983
    Assignee: Cuprinol Limited
    Inventors: Edward A. Hilditch, Robert E. Hambling, Colin R. Sparks, David A. Walker
  • Compositions containing preservative metals and their use for the preservation of wood and like materials and as fungicides
    Patent number: 4193993
    Abstract: Compositions in the form of an aqueous solution comprising:(a) a compound of a preservative metal;(b) a branched-chain carboxylic acid or a dipentene-mono-carboxylic acid or a dipentene-di-carboxylic acid; and(c) ammonia and/or an ammonium compound, the amount of ammonia and/or ammonium compound being at least sufficient to solubilize the compound (a) and to neutralize the acid (b), are useful for the preservation of wood and like materials by impregnation into or surface application to the material and are also useful as fungicides for the treatment of plants for agricultural and horticultural use.
    Type: Grant
    Filed: May 10, 1978
    Date of Patent: March 18, 1980
    Assignee: Cuprinol Limited
    Inventor: Edward A. Hilditch
  • Compositions containing preservative metals and their use for the preservation of wood and like materials and as fungicides
    Patent number: RE31576
    Abstract: Compositions in the form of an aqueous solution comprising:(a) a compound of a preservative metal;(b) a branched-chain carboxylic acid or a .[.dipentene-mono-carboxylic.]. .Iadd.dicyclopentadiene-mono-carboxylic .Iaddend.acid or a .[.dipentene-di-carboxylic.]. .Iadd.dicyclopentadiene-di-carboxylic .Iaddend.acid; and(c) ammonia and/or an ammonium compound, the amount of ammonia and/or ammonium compound being at least sufficient to solubilize the compound (a) and to neutralize the acid (b), are useful for the preservation of wood and like materials by impregnation into or surface application to the material and are also useful as fungicides for the treatment of plants for agricultural and horitcultural use.
    Type: Grant
    Filed: March 11, 1982
    Date of Patent: May 1, 1984
    Assignee: Cuprinol Limited
    Inventor: Edward A. Hilditch