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:
Apr. 14, 2009
Filed:
Feb. 02, 2006
Ulrich E. Hess, Corvallis, OR (US);
Samson Berhane, Corvallis, OR (US);
Arjang Fartash, Corvallis, OR (US);
Ulrich E. Hess, Corvallis, OR (US);
Samson Berhane, Corvallis, OR (US);
Arjang Fartash, Corvallis, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A cavitation structure for a print head has a first dielectric layer overlying at least a first portion of a substrate. A second dielectric layer has a first portion overlying at least a second portion of the substrate and a second portion, different from the first portion of the second dielectric layer, overlying at least a portion of the first dielectric layer. A cavitation layer has a first portion in contact with the first dielectric layer and a second portion in lateral contact with the second portion of the second dielectric layer. A third dielectric layer is disposed on only the first portion of the second dielectric layer.