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:
Nov. 13, 2001
Filed:
Oct. 20, 1998
Applicant:
Inventor:
Masaru Ishikawa, Saitama-ken, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03H 1/22 ; G03H 1/26 ; G09F 1/912 ; G11B 3/310 ;
U.S. Cl.
CPC ...
G03H 1/22 ; G03H 1/26 ; G09F 1/912 ; G11B 3/310 ;
Abstract
A rotary body such as an optical disc has a picture pattern formed on a surface perpendicular to a rotating center axis of the disc, said picture being recognizable when irradiated by a light. In particular, an area corresponding to the picture pattern comprises a reflective type grating consisting of a plurality of grooves arranged in parallel with one another.
Ishikawa, Masaru. (2001). Rotary body (U.S. Patent No. 6316072). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6316072
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile