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:
Jun. 11, 1985
Filed:
Jun. 11, 1982
Applicant:
Inventors:
Robert B Heiart, Middletown, NJ (US);
Abraham B Cohen, Springfield, NJ (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03F / ;
U.S. Cl.
CPC ...
430 22 ; 430291 ; 430293 ; 430319 ; 430322 ; 430327 ; 430396 ; 430394 ;
Abstract
Method for repetitive registering and imagewise exposing to actinic radiation a sheet substrate containing a photosensitive layer with use of a sequence of related photomasks. A liquid layer separates the photosensitive layer and each photomask during the exposure step.