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:
Oct. 13, 2015
Filed:
Aug. 30, 2013
Hewlett-packard Development Company, L.p., Houston, TX (US);
Adam L Ghozeil, Corvallis, OR (US);
Robert N K Browning, Corvallis, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A fluid ejection device is described. In an example, the fluid ejection device includes a substrate having a chamber formed thereon to contain a fluid. A thin-film stack is formed on the substrate having a resistor formed under the chamber. A transistor is formed in the substrate and coupled to the resistor. A circuit is formed in the substrate coupled to a gate of the transistor to selectively cause the transistor either to supply a firing current to the resistor for ejecting the fluid from the chamber or to dissipate power to warm the device.