Patents by Inventor John O. Leising

John O. Leising 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).

  • Process for stabilizing thiocarbamylsulfenamides
    Patent number: 4639517
    Abstract: The stability, especially to heat, of thiocarbamylsulfenamides is improved when the thiocarbamylsulfenamide in solution is treated with acidic aqueous solutions. The recovered and dried thiocarbamylsulfenamides demonstrate improved resistance to heat and improved storage stability.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: January 27, 1987
    Assignee: The B F Goodrich Company
    Inventors: Enrique G. Reynes, John O. Leising
  • Process for purifying thiocarbamylsulfenamides
    Patent number: 4632986
    Abstract: Thiocarbamylsulfenamides are readily recovered from solutions of the thiocarbamylsulfenamides by the addition of a dilute aqueous caustic solution, to flash off the solvent separating the thiocarbamylsulfenamide from the resulting water slurry and drying the thiocarbamylsulfenamide.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: December 30, 1986
    Assignee: The BFGoodrich Company
    Inventors: Enrique G. Reynes, John O. Leising