Patents by Inventor Kam Kuen Chan

Kam Kuen Chan 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).

  • Ultramild antibacterial cleaning composition for frequent use
    Patent number: 6045817
    Abstract: An antibacterial cleaning composition is described which has about 0.05 to about 1 wt. % of a cationic polymer having a charge density of 0.0025 or higher, about 0.2 to about 5% of a zwitterionic surfactant, about 0.2 to about 5 wt. % of at least one biguanide compound, and optionally a nonionic surfactant and a polymeric biocide compound. The composition has a pH of 7.5 or greater.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: April 4, 2000
    Assignee: Diversey Lever, Inc.
    Inventors: Kavssery Parameswaran Ananthapadmanabhan, Kam Kuen Chan, Dale Albert Grinstead, Carol Kregler Vincent, Arnoud Ubald Maria Gengler