Patents by Inventor Billy F. Rankin

Billy F. Rankin 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 for imparting freeze stability to chlorhexidine-containing medicaments
    Patent number: 4199567
    Abstract: Chlorhexidine gluconate containing solutions are stabilized against precipitation upon freezing by the addition thereto of certain nonionic surfactants.
    Type: Grant
    Filed: January 2, 1979
    Date of Patent: April 22, 1980
    Assignee: Burton, Parsons & Company, Inc.
    Inventor: Billy F. Rankin
  • Contact lens cleaning solution
    Patent number: 4127423
    Abstract: Silicone and/or hydrophilic soft contact lenses are freed of proteinaceous and other deposits by rubbing them with an aqueous solution of a crystalline sodium silicate having a pH of 10.2 - 10.9 and rinsing. The solution may contain in addition sodium chloride in isotonic amount, viscosity agents, wetting agents, detergents and bactericides.
    Type: Grant
    Filed: September 13, 1977
    Date of Patent: November 28, 1978
    Assignee: Burton, Parsons and Company, Inc.
    Inventor: Billy F. Rankin
  • Contact lens cleaning solution
    Patent number: 4065324
    Abstract: Silicone and/or hydrophilic soft contact lenses are freed of proteinaceous and other deposits by rubbing them with a buffered, aqueous solution of a crystalline sodium silicate, and rinsing. Heavy encrustations or deposits remaining after the above treatment may be removed from the lenses by heating them in said solution, removing them and rinsing.
    Type: Grant
    Filed: December 16, 1976
    Date of Patent: December 27, 1977
    Assignee: Burton, Parsons and Company, Inc.
    Inventor: Billy F. Rankin
  • Polystyrene sulfonate containing opthalmic solutions
    Patent number: 3987163
    Abstract: An opthalmic solution is provided for treatment of "dry eye", providing lubricating and cushioning effects for traumatized eyes, including trauma caused by the wearing of hard or gel-type contact lenses, and as a carrier for opthalmic medicaments. The solution is an aqueous solution of polystyrene sulfonate, optionally and preferably including polyethylene glycol, and other optional ingredients.
    Type: Grant
    Filed: May 1, 1975
    Date of Patent: October 19, 1976
    Assignee: Burton, Parsons and Company, Inc.
    Inventor: Billy F. Rankin
  • Opthalmic solution
    Patent number: 3947573
    Abstract: An ophthalmic solution is provided for treatment of "dry eye", providing lubricating and cushioning effects for traumatized eyes, including trauma caused by the wearing of hard or gel-type contact lenses, and as a carrier for ophthalmic medicaments. The solution is an aqueous solution of polyethylene oxide, optionally polyethylene glycol, and other optional ingredients.
    Type: Grant
    Filed: October 18, 1974
    Date of Patent: March 30, 1976
    Assignee: Burton, Parsons and Company, Inc.
    Inventor: Billy F. Rankin