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. 22, 2023
Filed:
Jun. 18, 2019
Applicant:
Hewlett-packard Development Company, L.p., Spring, TX (US);
Inventors:
Donald J. Milligan, Corvallis, OR (US);
Eric T. Martin, Corvallis, OR (US);
Rogelio Cicili, San Diego, CA (US);
Assignee:
Hewlett-Packard Development Company L.P., Spring, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/175 (2006.01); B41J 2/14 (2006.01); G01N 17/00 (2006.01);
U.S. Cl.
CPC ...
B41J 2/14153 (2013.01); B41J 2/175 (2013.01); G01N 17/008 (2013.01);
Abstract
In various examples, a fluid ejection device may include a substrate with a fluid feed hole and a corrosion-detecting conductive path or sensor disposed behind a wall of the fluid feed hold. The corrosion-detecting conductive path or sensor may close a circuit in response being exposed to a fluid contained within the fluid feed hole.