Patents by Inventor Melvin E. Tuvell

Melvin E. Tuvell 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).

  • Method of treating long chain alkyl amines or products derived therefrom
    Patent number: 4347381
    Abstract: The pink color content often produced in products such as amine salts, amine oxides, betaines, quaternary ammonium compounds or other compounds derived from long chain alkyl amines is eliminated by treating the products with trace amounts of a bleaching agent. Heating of the treated amine at relatively low temperatures for a short period of time enhances the effectiveness of the bleaching agent. Long chain alkyl amines having a pink color may be similarly treated.
    Type: Grant
    Filed: January 24, 1978
    Date of Patent: August 31, 1982
    Assignee: Ethyl Corporation
    Inventor: Melvin E. Tuvell
  • Sulfonate detergents
    Patent number: 3954676
    Abstract: An aqueous composition of matter containing sodium alkene sulfonates or sodium hydroxy alkane sulfonates and aliphatic monoethanol amides in an amount sufficient to increase the viscosity thereof.
    Type: Grant
    Filed: September 26, 1973
    Date of Patent: May 4, 1976
    Assignee: Ethyl Corporation
    Inventor: Melvin E. Tuvell