The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 24, 2001
Filed:
Aug. 20, 1993
Eugene A. Mizusawa, Castro Valley, CA (US);
Susan A. Anderson, Menlo Park, CA (US);
Maha Y. El-Sayed, Fremont, CA (US);
Daniel R. Leiske, Livermore, CA (US);
Richard J. Wiersema, Tracy, CA (US);
Chihae Yang, Pleasanton, CA (US);
The Clorox Company, Oakland, CA (US);
Abstract
Lipase is immobilized on surfaces to facilitate oil removal from the surfaces and to alter wettability of the surfaces. The lipase is isolatable from a Pseudomonas organism such as,ATCC 53552 or from an organism expressing a coding region found in or cloned from the Pseudomonas. A particularly preferred lipase has a molecular weight of about 30 to 35 kd and is resolvable as a single band by SDS gel electrophoresis. Lipase sorbed on fabric forms a fabric-lipase complex for oil stain removal. The lipase may be sorbed on fabric before or after an oil stain, and the lipase is active to hydrolyze an oil stain on dry fabric or fabric in laundering solutions. The sorbed lipase has enhanced stability to denaturation by surfactants and to heat deactivation, is resistant to removal from fabric during laundering, retains substantial activity after drying fabric at an elevated temperature, and retains activity during fabric storage or wear. Redeposition of oil and oil hydrolysis by-products during laundering of fabric is retarded by the lipase. Oil hydrolysis by-products are removable during laundering of fabric at a basic pH or in the presence of a surfactant.