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. 02, 2002
Filed:
Aug. 19, 1999
Applicant:
Inventors:
Christopher Beatty, Corvallis, OR (US);
Naoto Kawamura, Corvallis, OR (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/04 ; H01L 2/1302 ;
U.S. Cl.
CPC ...
B41J 2/04 ; H01L 2/1302 ;
Abstract
One method of fabricating a fluid ejection device comprises forming a heating element on a first surface of a substrate. Adjacent the heating element, a hole is formed through the first surface to define a fill channel. The fill channel is filled with a filler material, and after filled, a fluid chamber is formed over the heating element. The filler material is removed. The fluid chamber is fluidically coupled with the fill channel, and is capable of ejecting fluid heated by the heating element.