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. 13, 2006
Elizabeth A. Fellner, San Diego, CA (US);
James Pingel, San Diego, CA (US);
Matthew David Giere, San Diego, CA (US);
Satya Prakash, San Diego, CA (US);
David W Jenkins, San Diego, CA (US);
James a Feinn, San Diego, CA (US);
Arun K Agarwal, Corvallis, OR (US);
Julie J Cox, Corvallis, OR (US);
Jules G Moritz, Corvallis, OR (US);
Ozgur Yildirim, Corvallis, OR (US);
Elizabeth A. Fellner, San Diego, CA (US);
James Pingel, San Diego, CA (US);
Matthew David Giere, San Diego, CA (US);
Satya Prakash, San Diego, CA (US);
David W Jenkins, San Diego, CA (US);
James A Feinn, San Diego, CA (US);
Arun K Agarwal, Corvallis, OR (US);
Julie J Cox, Corvallis, OR (US);
Jules G Moritz, Corvallis, OR (US);
Ozgur Yildirim, Corvallis, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A fluid ejection device includes a fluid chamber, a fluid restriction communicated with the fluid chamber, and a fluid channel communicated with the fluid restriction. The fluid restriction has a fluid restriction parameter defined as (2*W+2*H)*L/(H*W), wherein W is a width of the fluid restriction, H is a height of the fluid restriction, and L is a length of the fluid restriction. As such, the fluid restriction parameter is in a range of 1.5 to 5.75.