Patents by Inventor Colin Leslie McIntosh

Colin Leslie McIntosh 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).

  • Alkoxycarbonylphosphonic acid derivative brush control agents
    Patent number: 4108626
    Abstract: Alkoxycarbonylphosphonic acids and alkylthiocarbonylphosphonic acids and esters and salts of these acids such as diammonium methoxycarbonylphosphonate are useful for regulation of the growth rate of plants.
    Type: Grant
    Filed: March 17, 1977
    Date of Patent: August 22, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Colin Leslie McIntosh
  • Plant growth retardant compositions containing iminocarbonylphosphonates and iminocarbonylphosphonates
    Patent number: 4066434
    Abstract: Iminocarbonylphosphonates, such as dimethyl 1,1-bis (dimethylamino)methyleneaminocarbonylphosphonate, useful as plant growth retardants.
    Type: Grant
    Filed: November 2, 1976
    Date of Patent: January 3, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Colin Leslie McIntosh
  • Carboxyphosphonate brush control agents
    Patent number: 4042650
    Abstract: Carboxyphosphonates such as trisodium carboxyphosphonate are useful for regulation of plant growth.
    Type: Grant
    Filed: August 31, 1976
    Date of Patent: August 16, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Colin Leslie McIntosh
  • Alkoxycarbonylphosphonic acid derivative brush control agents
    Patent number: 4033749
    Abstract: Alkoxycarbonylphosphonic acids and alkylthiocarbonylphosphonic acids and esters and salts of these acids such as diammonium methoxycarbonylphosphonate are useful for regulation of the growth rate of plants.
    Type: Grant
    Filed: September 25, 1975
    Date of Patent: July 5, 1977
    Assignee: E. I, Du Pont de Nemours and Company
    Inventor: Colin Leslie McIntosh
  • Carboxyphosphonates
    Patent number: 4018854
    Abstract: Carboxyphosphonates such as trisodium carboxyphosphonate are useful for regulation of plant growth.
    Type: Grant
    Filed: June 25, 1975
    Date of Patent: April 19, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Colin Leslie McIntosh
  • Para-nitrobenzotribromide process
    Patent number: 3993704
    Abstract: The conversion of p-nitrobenzal bromide to p-nitrobenzotribromide, an intermediate in the preparation of the insecticide, 1,5-bis(4-trifluoromethylphenyl)-3-cyanoformazan, by reacting p-nitrobenzal bromide with an alkali or alkaline earth metal hypobromite is improved by carrying out the reaction in a two-phase, water-organic solvent system.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: November 23, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Frank Dennis Marsh, Colin Leslie McIntosh
  • Alkoxy carboxycarbonylphosphonic acid esters
    Patent number: 3943201
    Abstract: Alkoxycarbonylphosphonic acids and alkylthiocarbonylphosphonic acids and esters and salts of these acids such as diammonium methoxycarbonylphosphonate are useful for regulation of the growth rate of plants.
    Type: Grant
    Filed: May 30, 1974
    Date of Patent: March 9, 1976
    Assignee: E. I. Du Pont de Nemours and Comapny
    Inventor: Colin Leslie McIntosh