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:
Sep. 05, 2000
Filed:
Sep. 02, 1999
Applicant:
Inventor:
Dennis Stephen Murphy, Leonia, NJ (US);
Assignee:
Lever Brothers Company, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11D / ; C11D / ;
U.S. Cl.
CPC ...
510286 ; 510288 ; 510289 ; 510291 ; 510466 ; 510467 ; 510470 ; 510488 ; 510492 ; 510499 ; 510501 ; 510505 ; 510506 ; 8142 ;
Abstract
A system for dry cleaning soils from fabrics is described which contains densified carbon dioxide combined with a selected surfactant. The densified carbon dioxide is used in a temperature range of about -78.5.degree. C. to about 100.degree. C. and a pressure range of about 14.7 psi to about 10,000 psi. The surfactant is selected from one of two groups of compounds having a formula ##STR1## as described in the text or a second group of siloxane compounds having a formula [AB].sub.y as described. A process for using the dry cleaning system is also described.