Patents by Inventor Fred Kirchner

Fred Kirchner 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).

  • Process of preparing a topical antimicrobial cleanser
    Patent number: 5906808
    Abstract: The combination of chlorhexidine gluconate (CHG), SDA-3 ethyl alcohol and cetyl lactate has produced a highly effective topical antimicrobial cleanser having immediate, persistant and residual bactericidal activity. The invention also relates to a low temperature manufacturing process for producing chlorhexidine salts in alcohol based formulations.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: May 25, 1999
    Assignee: Calgon Vestal, Inc.
    Inventors: David W. Osborne, Fred Kirchner
  • Stainless steel alkali treatment
    Patent number: 5858118
    Abstract: The invention includes a method for cleaning and passivating a stainless steel surface comprising:1) contacting the surface with 15-45 ml/liter of a composition consisting essentially of between about 15 and 50% alkaline component, between about 1 to 15% chelant, and between about 35 to 84% water;2) maintaining contact to dislodge and remove residue from the surface;3) continuing contact to complex free iron ions liberated from the surface with the chelant to form an oxide film on the surface; and4) continuing contact to precipitate the complexed ions into the oxide film.The compositions may further include a surfactant selected from the group consisting of anionic, cationic, nonionic and zwitterionic surfactants to enhance cleaning performance.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: January 12, 1999
    Assignee: Calgon Vestal, Inc.
    Inventors: Sadiq Shah, Fred Kirchner
  • Topical antimicrobial cleanser containing chlorhexidine gluconate and alcohol
    Patent number: 5776430
    Abstract: The combination of chlorhexidine gluconate (CHG), SDA-3 ethyl alcohol and cetyl lactate has produced a highly effective topical antimicrobial cleanser having immediate, persistant and residual bactericidal activity. The invention also relates to a low temperature manufacturing process for producing chlorhexidine salts in alcohol based formulations.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: July 7, 1998
    Assignee: Calgon Vestal, Inc.
    Inventors: David W. Osborne, Fred Kirchner
  • Stainless steel acid treatment
    Patent number: 5766684
    Abstract: The invention includes a method for cleaning and passivating a stainless steel surface comprising:1) contacting the surface with 1548 ml/liter of an acid formulation comprising between about 1 and 60% acid component, about 1-15% surfactant, and between about 39 and 98% water;2) maintaining contact to dislodge and remove residue from the surface;3) continuing contact to complex free iron ions liberated from the surface to form an oxide film on the surface; and4) continuing contact to precipitate the complexed ions into the oxide film.
    Type: Grant
    Filed: April 21, 1997
    Date of Patent: June 16, 1998
    Assignee: Calgon Vestal, Inc.
    Inventors: Sadiq Shah, Fred Kirchner
  • Percarbonate based cleaner for cosmetic and pharmaceutical manufacturing facilities
    Patent number: 5445761
    Abstract: The present invention claims and describes an environmentally sound percarbonate based cleaner for removing cosmetic and pharmaceutical soils from pharmaceutical or cosmetic manufacturing surfaces. The invention includes a combination of a percarbonate; an ethylene oxide/propylene oxide block copolymer surfactant; and a bicarbonate salt. The invention is useful for removing hard-to-remove soils from a pharmaceutical or cosmetic manufacturing surface.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: August 29, 1995
    Assignee: E.R. Squibb and Sons, Inc.
    Inventors: Sadiq Shah, Fred Kirchner