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:
Mar. 17, 1992
Filed:
Aug. 27, 1990
Applicant:
Inventors:
Kenneth T Dishart, Wilmington, DE (US);
David S Lermond, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours & Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ; C23G / ; C11D / ; C11D / ;
U.S. Cl.
CPC ...
134 10 ; 134 40 ; 252162 ; 252170 ; 252173 ; 25217414 ; 25217422 ;
Abstract
A substrate cleaning process employs a substantially aqueous immiscible cleaning composition and a water rinse followed by phase separation of the cleaning composition and water and reuse of the water.