Patents by Inventor Lance L. Renfrow

Lance L. Renfrow 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).

  • Detergent composition and method of using same
    Patent number: 6855679
    Abstract: A detergent blend is prepared by admixing together a fluorinated surfactant and an amphoteric-based sultaine surfactant hydrotrope. This blend can then be formulated into a detergent concentrate which includes a caustic compound, a chelant, a descaler, and other adjuvants to enable the concentrate to be diluted into a use solution for use in either an acid or base environment. The use solution prepared from the detergent blend is particularly useful in cleaning draft beer lines, dairy lines, and the like.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: February 15, 2005
    Inventor: Lance L. Renfrow
  • Detergent composition and method of using same
    Publication number: 20030232736
    Abstract: A detergent blend is prepared by admixing together a fluorinated surfactant and an amphoteric-based sultaine surfactant hydrotrope. This blend can then be formulated into a detergent concentrate which includes a caustic compound, a chelant, a descaler, and other adjuvants to enable the concentrate to be diluted into a use solution for use in either an acid or base environment. The use solution prepared from the detergent blend is particularly useful in cleaning draft beer lines, dairy lines, and the like.
    Type: Application
    Filed: March 21, 2003
    Publication date: December 18, 2003
    Inventor: Lance L. Renfrow
  • Stable hydrotropic surfactants comprising alkylamino propionate
    Patent number: 6555511
    Abstract: Detergent compositions containing at least two surfactants, one having a cloud point of less than about 30° C., especially below about 14° C., and another having a cloud point of greater than about 30° C., especially above about 40° C. Methods of cleaning beer and food processing apparatus comprising applying these compositions also containing an alkali or acidic cleaner.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: April 29, 2003
    Inventor: Lance L. Renfrow
  • Detergent compositions and methods
    Publication number: 20020037821
    Abstract: Detergent compositions containing at least two surfactants, one having a cloud point of less than about 30° C., especially below about 14° C., and another having a cloud point of greater than about 30° C., especially above about 40° C.
    Type: Application
    Filed: January 19, 2001
    Publication date: March 28, 2002
    Inventor: Lance L. Renfrow