Patents by Inventor Jeffrey Donald Leman

Jeffrey Donald Leman 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).

  • Fire retardant wood products
    Patent number: 4117200
    Abstract: Melamine phosphate having hydrogen bonded thereto from about 0.5 to about 1.5 moles of phosphoric acid per mole of melamine phosphate, particleboard containing said melamine phosphate material and processes for the production thereof, are disclosed.
    Type: Grant
    Filed: September 16, 1977
    Date of Patent: September 26, 1978
    Assignee: American Cyanamid Company
    Inventors: Jeffrey Donald Leman, Allan James Robertson
  • Melamine phosphate
    Patent number: 4080501
    Abstract: Melamine phosphate having hydrogen bonded thereto from about 0.5 to about 1.5 moles of phosphoric acid per mole of melamine phosphate, particleboard containing said melamine phosphate material and processes for the production thereof, are disclosed.
    Type: Grant
    Filed: June 21, 1973
    Date of Patent: March 21, 1978
    Assignee: American Cyanamid Company
    Inventors: Jeffrey Donald Leman, Allan James Robertson