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:
Feb. 14, 2000
Applicant:
Inventors:
Christopher A Schantz, Redwood City, CA (US);
Wen-Li Su, Vancouver, WA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/195 ;
U.S. Cl.
CPC ...
B41J 2/195 ;
Abstract
An ink cartridge of a printer includes first and second electrodes on opposite sides of an ink reservoir. Level of ink in the reservoir may be measured by applying a sense signal to the first electrode, detecting a signal at the second electrode, extracting DC content of the detected signal, and using the DC content to determine the ink level.
Quick Actions:
Schantz, Christopher. (2002). Ink level sensing method and apparatus (U.S. Patent No. 6431670). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6431670
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile