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. 01, 2014
Filed:
Apr. 29, 2010
James E. Abbott, Jr., Adair Village, OR (US);
Samuel Ajayi, Corvallis, OR (US);
Sadiq Bengali, Corvallis, OR (US);
Stephen Horvath, San Diego, CA (US);
Greg S. Long, Corvallis, OR (US);
Satya Prakash, San Diego, CA (US);
Alfred I-tsung Pan, Sunnyvale, CA (US);
Mohammed S. Shaarawi, Corvallis, OR (US);
Roberto A. Pugliese, Tangent, OR (US);
James E. Abbott, Jr., Adair Village, OR (US);
Samuel Ajayi, Corvallis, OR (US);
Sadiq Bengali, Corvallis, OR (US);
Stephen Horvath, San Diego, CA (US);
Greg S. Long, Corvallis, OR (US);
Satya Prakash, San Diego, CA (US);
Alfred I-Tsung Pan, Sunnyvale, CA (US);
Mohammed S. Shaarawi, Corvallis, OR (US);
Roberto A. Pugliese, Tangent, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A fluid ejection device includes a thin film heater resistor portion having a heater resistor, and a two-layer structure disposed over the heater resistor. The two-layer structure includes a top layer and a bottom layer, with the top layer having a hardness that is at least 1.5 times greater than the hardness of the bottom layer.