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.:

US 6835944 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 28, 2004

Filed:

Oct. 11, 2002
Applicant:
Inventors:

Rocco A. Orsini, Long Beach, CA (US);

Michael B. Petach, Redondo Beach, CA (US);

Mark E. Michaelian, Torrance, CA (US);

Henry Shields, San Pedro, CA (US);

Roy D. McGregor, El Camino Village, CA (US);

Steven W. Fornaca, Torrance, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 3/500 ;
U.S. Cl.
CPC ...
H01J 3/500 ;
Abstract

An EUV radiation source that creates a stable solid filament target. The source includes a nozzle assembly having a condenser chamber for cryogenically cooling a gaseous target material into a liquid state. The liquid target material is filtered by a filter and sent to a holding chamber under pressure. The holding chamber allows entrained gas bubbles in the target material to be condensed into liquid prior to the filament target being emitted from the nozzle assembly. The target material is forced through a nozzle outlet tube to be emitted from the nozzle assembly as a liquid target stream. A thermal shield is provided around the outlet tube to maintain the liquid target material in the cryogenic state. The liquid target stream freezes and is vaporized by a laser beam from a laser source to generate the EUV radiation.


Find Patent Forward Citations

Orsini, Rocco. (2004). Low vapor pressure, low debris solid target for euv production (U.S. Patent No. 6835944). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6835944

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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