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. 19, 1981
Filed:
May. 21, 1979
Applicant:
Inventors:
Toshifumi Uetake, Hachiouji, JP;
Masaki Matsubara, Hachiouji, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
350410 ; 350472 ;
Abstract
The present invention relates to an ocular comprising a first lens component of a positive single or cemented lens, a second lens component of a positive single lens, a third lens component of a biconcave lens and a fourth lens component of a positive single lens. The ocular is constituted of a triplet type lens system comprising as a basis the second through fourth lens components and, in addition, the positive single or cemented lens.
Uetake, Toshifumi. (1981). Ocular of large visual field (U.S. Patent No. 4268128). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4268128
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile