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:
Dec. 23, 2003
Filed:
Sep. 20, 2001
Toshio Imamura, Yokohama, JP;
Rumi Omido, Yokohama, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A magnetic tape cassette for use in an apparatus having a light source (P) and a light sensor (S , S ) for detecting a tape end by the difference of light transmittance of a tape (T). The magnetic tape cassette (AA, BB, CC) is composed of a light-shielding member (a through r) crossing a light path (L , L ) for detecting the tape end by the difference of light transmittance of the magnetic layer portion and the leader portion to keep the light transmittance within the predetermined value even the tape (T) is thinner and has a higher light transmittance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile