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. 24, 2012
Filed:
Mar. 27, 2008
Keigo Hasegawa, Tokyo, JP;
Yoshihiro Kikuchi, Tokyo, JP;
Shigeru Takizawa, Kanagawa, JP;
Hoya Corporation, Tokyo, JP;
Abstract
The optical surface of a lens () held and rotated by the rotating shaft () of a lathe is cut or ground into an aspherical surface from a direction perpendicular to the axis of the rotating shaft () and the axial direction of the rotating shaft () while a processing locus (t) which is concentric or spiral about the rotating shaft () as the center is formed. In processing, the lens () is arranged in a grinding region () at a position spaced apart from the turning center (Zo) of the processing locus (t).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile