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:
Jul. 17, 2007
Filed:
Sep. 17, 2004
Xiaofeng Yang, Corvallis, OR (US);
Kenneth E. Trueba, Philomath, OR (US);
Rod Alley, Corvallis, OR (US);
Winthrop Childers, San Diego, CA (US);
David Tyvoll, La Jolla, CA (US);
Douglas A. Sexton, La Jolla, CA (US);
Xiaofeng Yang, Corvallis, OR (US);
Kenneth E. Trueba, Philomath, OR (US);
Rod Alley, Corvallis, OR (US);
Winthrop Childers, San Diego, CA (US);
David Tyvoll, La Jolla, CA (US);
Douglas A. Sexton, La Jolla, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A silicon die having an orifice layer with plural openings formed therein defines a drop ejection device for use in a handheld inhaler. An underlying control layer defines fluid chambers, each carrying a heat transducer. A control system energizes selected heat transducers to heat fluid in the chambers, vaporizing the fluid, which is ejected through the orifices in small droplets.