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:
May. 08, 2018
Filed:
Feb. 13, 2013
Applicant:
Hewlett-packard Development Company, L.p., Houston, TX (US);
Inventors:
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/16 (2006.01); B41J 2/175 (2006.01); B41J 29/393 (2006.01); B23K 26/382 (2014.01); B23K 26/402 (2014.01); B41J 2/14 (2006.01); B23K 103/00 (2006.01); B23K 103/08 (2006.01); B23K 103/10 (2006.01); B23K 103/12 (2006.01); B23K 103/14 (2006.01);
U.S. Cl.
CPC ...
B41J 2/162 (2013.01); B23K 26/382 (2015.10); B23K 26/402 (2013.01); B41J 2/1433 (2013.01); B41J 2/1603 (2013.01); B41J 2/1628 (2013.01); B41J 2/1629 (2013.01); B41J 2/1631 (2013.01); B41J 2/1632 (2013.01); B41J 2/1634 (2013.01); B41J 2/1753 (2013.01); B41J 29/393 (2013.01); B23K 2203/08 (2013.01); B23K 2203/10 (2013.01); B23K 2203/12 (2013.01); B23K 2203/14 (2013.01); B23K 2203/42 (2015.10); B23K 2203/50 (2015.10); B23K 2203/52 (2015.10); B23K 2203/54 (2015.10); B23K 2203/56 (2015.10);
Abstract
A method of forming a substrate for a fluid ejection device includes forming an opening in the substrate from a second side toward a first side, and further forming the opening in the substrate to the first side, including increasing the opening to the first side and increasing the opening at the second side, and forming the opening with substantially parallel sidewalls intermediate the first side and the second side and converging sidewalls to the first side.