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:
May. 17, 1994
Filed:
Oct. 29, 1992
Applicant:
Inventors:
Joseph A Antonelli, Riverton, NJ (US);
Tyau-Jeen Lin, Chadds Ford, PA (US);
Duck J Yang, Wilmington, DE (US);
Hirotsugu Yasuda, Columbia, MO (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
2041811 ; 2041817 ; 427488 ; 427535 ;
Abstract
This invention relates to the use of low temperature plasma technology for significantly improved corrosion protection of metals. The plasma process involves pretreatment of the surface of the metal with a gas plasma to remove oxygen, followed by plasma deposition of a thin polymeric film on the treated surface, followed by cathodic electrocoat application of a primer.