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. 27, 2002
Filed:
Oct. 15, 1999
Applicant:
Inventors:
Michael J. Harris, Oceanside, CA (US);
Donald R. Green, Jr., San Marcos, CA (US);
Assignee:
Denso Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 1/500 ;
U.S. Cl.
CPC ...
H04M 1/500 ;
Abstract
A call time usage system for a portable telephone allows entering call time usage information into the portable telephone. The limits include limits on total airtime and airtime per call for a specified interval. After the specified interval, the limits are reset. A list of exempt numbers is also stored so that the user can call those exempt numbers even after the limit is exceeded.
Harris, Michael. (2002). Airtime usage limiting system (U.S. Patent No. 6442406). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6442406
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile