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:
Aug. 13, 2002
Filed:
Jun. 14, 2001
Applicant:
Inventor:
Koichiro Oku, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B 1/128 ;
U.S. Cl.
CPC ...
G05B 1/128 ;
Abstract
The spindle motor drive circuit includes a power source voltage varying device for varying a voltage applied to a motor by controlling a power source voltage, and a pulse width varying device for varying a pulse width by pulse width modulation.
Quick Actions:
Oku, Koichiro. (2002). Spindle motor driver circuit (U.S. Patent No. 6433502). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6433502
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile