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:
Sep. 27, 2005
Filed:
Sep. 09, 2002
Applicants:
Chikara Yamamoto, Saitama-ken, JP;
Moriyasu Shirayanagi, Saitama-ken, JP;
Inventors:
Chikara Yamamoto, Saitama-ken, JP;
Moriyasu Shirayanagi, Saitama-ken, JP;
Assignee:
PENTAX Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02C007/06 ;
U.S. Cl.
CPC ...
Abstract
According to a method of manufacturing a progressive power spectacle lens, available vertex powers are divided into a plurality of vertex power groups, one surface of a spectacle lens has been formed as a common surface for the vertex powers within each of the plurality of vertex power groups, and an opposite surface of the spectacle lens is formed as a progressive power surface in accordance with a desired vertex power.