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:
Feb. 19, 1980
Filed:
Mar. 17, 1978
Applicant:
Inventor:
Robert A Johnson, Graham, TX (US);
Assignee:
Graham Magnetics, Inc., Ft. Worth, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
428331 ; 360134 ; 428411 ; 428447 ; 428538 ; 428900 ; 428906 ; 428922 ; 4284259 ; 427128 ; 427131 ;
Abstract
An improved, conventionally-spoolable, magnetic tape which can be unspooled and read after exposure to very high temperatures. The improvement is largely in a thermally resistant, non-adhering, anti-static backing system, used in conjunction with magnetic face coatings.
Johnson, Robert. (1980). Process of making high-temperature magnetic tape (U.S. Patent No. 4189514). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4189514
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile