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:
Dec. 20, 1983
Filed:
Mar. 14, 1983
Applicant:
Inventors:
Takashi Suzuki, Yokohama, JP;
Kiyoshi Iizuka, Yokohama, JP;
Keiji Ohtaka, Tokyo, JP;
Hidemasa Mizutani, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354200 ;
Abstract
A focussing plate for photographic cameras, etc. which is constructed with a multitude of micro-lens shaped curved surfaces arranged on a substrate surface at a space interval among them of from 5 to 30 .mu.m, and other curved surfaces arranged in the boundary spaces among these micro-lens shaped curved surfaces having a curvature just opposite to that of the micro-lens shaped curved surfaces.
Suzuki, Takashi. (1983). Focussing plate (U.S. Patent No. 4421398). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4421398
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile