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:
Apr. 14, 1992
Filed:
Aug. 28, 1990
Applicant:
Inventors:
Hisashi Tokumaru, Sayama, JP;
Mitsuko Date, Sakai, JP;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359686 ; 359676 ; 359642 ;
Abstract
A compact size zoom lens system ranging to a wide field angle and having a high zoom ratio of up to 10. The zone lens system is composed of, from the object to the image side, a positive first lens group, a negative second lens group, a positive third lens group and a negative fourth lens group, and fulfills the following conditions:
Tokumaru, Hisashi. (1992). Zoom lens system having high zoom ratio ranging to wide field angle (U.S. Patent No. 5105311). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5105311
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile