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. 12, 2001
Filed:
Oct. 25, 1996
Christophe Truffaut, Rennes, FR;
Pascal Coudray, La Chapelle des Fougeretz, FR;
Marie-Hélène Froger, Chateaugiron, FR;
Alexandre Dodge, Pace, FR;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Detecting a quantity of a product remaining in a reservoir subjected, during use of the product, to a driving movement. The reservoir is driven in accordance with reference signals representing target movements. The reference signals including at least one test reference signal. The position of the reservoir in response to the test reference signal is detected. The quantity of product remaining in the reservoir is determinable from the detected position. Alternatively, a change in temperature caused by moving the reservoir in response to the test reference signal is detected, and the quantity of product remaining in the reservoir is determinable from the change in temperature.