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:
Jun. 20, 1989
Filed:
Jan. 13, 1988
Applicant:
Inventors:
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
242199 ;
Abstract
An magnetic tape cassette of the type in which the tape is wound on flangeless hubs and the tape is pulled out through an opening in the cassette for recording and reproducing having improved tape winding characteristics. An annular projection is formed around each of the flangeless hubs, and a rib having about the same height as the annular projection extends radially outwardly from the radial projection in an area corresponding to the first-wound portion of the tape. The rib keeps the tape from deviating sideways as it is initially wound onto the hub.
Katagiri, Shingo. (1989). Magnetic tape cassette (U.S. Patent No. 4840326). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4840326
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile