Patents by Inventor Philip E. Cothran

Philip E. Cothran 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).

  • Anti-dandruff shampoos with particulate active agent and cationic polymer
    Patent number: 5624666
    Abstract: Provided is a anti-dandruff shampoo composition comprising: (a) from about 8% to about 40%, by weight, of anionic detersive surfactant; (b) from about 0.1% to about 5%, by weight, of particulate anti-dandruff agent having an average particle size of from about 0.35 microns to about 5 microns; (c) from about 0.01% to about 1.0%, by weight, of a stabilizing agent for said anti-dandruff agent, said stabilizing agent being a soluble cationic polymer; (d)from about 50% to about 91.89%, by weight, water; wherein said shampoo composition is substantially free of suspending agents selected from the group consisting of crystalline suspending agents and anionic, nonionic, and amphoteric polymeric suspending agents. Also provided is a process used for making the present compositions wherein said particulate anti-dandruff agent and said cationic polymer are admixed in water in the presence of anionic detersive surfactant.
    Type: Grant
    Filed: January 20, 1995
    Date of Patent: April 29, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Timothy W. Coffindaffer, Philip E. Cothran, Thomas F. Gauthier
  • Shampoo compositions
    Patent number: 5151209
    Abstract: Disclosed are selenium sulfide lotion shampoos containing low levels of hydroxypropyl methylcellulose as an agent to keep the selenium sulfide particles dispersed.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: September 29, 1992
    Assignee: The Procter & Gamble Company
    Inventors: Patrick C. McCall, Philip E. Cothran
  • Hair conditioning compositions
    Patent number: 4472375
    Abstract: Hair conditioning compositions in the form of an emulsion comprising a volatile agent, a nonionic, water soluble thickening agent, a cationic hair conditioning agent and water.
    Type: Grant
    Filed: October 1, 1982
    Date of Patent: September 18, 1984
    Assignee: The Procter & Gamble Company
    Inventors: Raymond E. Bolich, Jr., Lloyd B. Hartsough, Philip E. Cothran
  • Hair conditioning compositions
    Patent number: 4374825
    Abstract: Hair conditioning compositions in the form of an emulsion comprising a volatile agent, a nonionic, water soluble thickening agent, a cationic hair conditioning agent and water.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: February 22, 1983
    Assignee: The Proctor & Gamble Company
    Inventors: Raymond E. Bolich, Jr., Lloyd B. Hartsough, Philip E. Cothran