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:
Jun. 03, 2008
Filed:
Apr. 20, 2005
Applicants:
Anthony D. Studer, Corvallis, OR (US);
Kevin D. Almen, Corvallis, OR (US);
David M. Hagen, Corvallis, OR (US);
Inventors:
Anthony D. Studer, Corvallis, OR (US);
Kevin D. Almen, Corvallis, OR (US);
David M. Hagen, Corvallis, OR (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/175 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and apparatuses are provided for use inkjet pens. One method includes, during an initial stage of pen life, drawing ink from an ink reservoir through a standpipe, and, during an extended stage of pen life, allowing external air to enter into the standpipe through a standpipe bubbler and drawing ink from within the standpipe but not the ink reservoir.