Patents by Inventor Morton B. Epstein

Morton B. Epstein 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).

  • Substantive sunscreen agents
    Patent number: 4256664
    Abstract: Substantive sunscreen agents which are neutralized or quaternary ammonium salts of esters or amides of p-aminobenzoic acid, p-nitrobenzoic acid or salicylic acid with choline, lecithin, hydroxyalkyl-substituted imidazoles, 2,2-dialkylamino alkanols or alkylamines, pyridinesulfonamide, or colaminomethylformyl chloride; or omega halogenoalkylethers of salicylic acid quaternized with tertiary amines. This is a continuation of application Ser. No. 339,974 filed Mar. 12, 1973, which is a divisional application of Ser. No. 130,533, filed Apr. 1, 1971, both now abandoned.
    Type: Grant
    Filed: March 1, 1976
    Date of Patent: March 17, 1981
    Assignee: Colgate-Palmolive Company
    Inventors: Morton B. Epstein, John F. Gerecht