Patents by Inventor Sean D. Dingman

Sean D. Dingman 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).

  • Block detergent containing nitrilotriacetic acid
    Patent number: 5490949
    Abstract: A phosphate-free, solid, block detergent containing an alkali metal salt of nitrilotriacetic acid, an acid, alkali metal containing hydroxides and silicates, and alkali metal containing carbonates and sulfates is taught. A process for producing the block detergent is also taught.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: February 13, 1996
    Assignee: Monsanto Company
    Inventors: Thomas W. Backes, Sean D. Dingman, Sheldon P. Verrett
  • Block detergent containing nitrilotriacetic acid
    Patent number: 5425895
    Abstract: A solid, block detergent containing an alkali metal salt of nitrilotriacetic acid, an acid, alkali metal containing hydroxides and silicates, and alkali metal containing carbonates and sulfates is taught. A process for producing the block detergent is also taught.
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: June 20, 1995
    Assignee: Monsanto Co.
    Inventors: Thomas W. Backes, Sean D. Dingman, Sheldon P. Verrett
  • Block detergent containing nitrilotriacetic acid
    Patent number: 5419850
    Abstract: A phosphate-free, solid, block detergent containing an alkali metal salt of nitrilotriacetic acid, an acid, alkali metal containing hydroxides and silicates, and alkali metal containing carbonates and sulfates is taught. A process for producing the block detergent is also taught.
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: May 30, 1995
    Assignee: Monsanto Company
    Inventors: Thomas W. Backes, Sean D. Dingman, Sheldon P. Verrett