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. 25, 1978
Filed:
Feb. 10, 1977
Applicant:
Inventor:
James John DiPiazza, Mt. Laurel, NJ (US);
Assignee:
RCA Corp., New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
96 384 ; 96 2 / ; 96 8 / ; 96 8 / ; 350164 ;
Abstract
A light absorbing medium is interposed between a photosensitive layer, such as a photoresist layer, and the surface upon which the photosensitive layer is to be applied in order to eliminate surface effects which result from the reflection of light which passes through the photosensitive layer and is then reflected upward from the surface back into the photosensitive layer. The light absorbing medium may be either a quarter-wave plate or a filter chosen to absorb light of the energy spectrum to which the photosensitive layer is sensitive.