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. 07, 2006
Filed:
Sep. 17, 2002
Applicant:
Louis M. Kindt, Milton, VT (US);
Inventor:
Louis M. Kindt, Milton, VT (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and system to minimize the affects of thermal gradient distortion in reticles. A heat source and filter or filters are used to control which part or parts of the reticle receive additional radiation. The heat created by this additional radiation minimizes any thermal gradients across the mask by supplying a constant heat flux to the entire surface of the mask. The heat source can also be used to preheat the reticle to minimize any transient start-up effects.