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:
Nov. 03, 1992
Filed:
Jul. 30, 1991
Applicant:
Inventor:
Narayan V Deshpande, Penfield, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; B44C / ;
U.S. Cl.
CPC ...
156644 ; 156647 ; 156651 ; 156657 ; 1566591 ; 156662 ; 3461 / ;
Abstract
A method of fabricating an aperture plate for a roofshooter thermal ink jet printhead wherein a two step orientation dependent etch is conducted on a silicon wafer. The two step etch forms a trough in one face of the silicon wafer and a plurality of apertures in either the same or opposite face as the trough.