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. 21, 1983
Filed:
Mar. 17, 1982
Applicant:
Inventors:
Takahiro Sugiyama, Tokyo, JP;
Yukio Hagiwara, Tokyo, JP;
Assignee:
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
350478 ; 350414 ;
Abstract
An objective system consists of three lens components, the first lens component including a positive meniscus lens convex to the light source, the second lens component including a positive meniscus lens convex to the light source, and the third lens component including a positive meniscus lens concave to the light source. The objective system for a video disc satisfying the following conditions:
Sugiyama, Takahiro. (1983). Objective system for video disc (U.S. Patent No. 4389100). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4389100
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile