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:
Aug. 16, 2005
Filed:
Dec. 13, 2002
Christopher S. Whitesell, Richardson, TX (US);
Christopher S. Whitesell, Richardson, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
Improved long gas injectors for a vertical furnace used in semiconductor wafer processing are useful to minimize particulate contamination in the wafer processing area of the furnace, and minimize distortion of the long injectors during thermal excursions. The improved injectors are fabricated with a stabilizing quartz standoff positioned near the onset of the vertical portion of the injector tube which adds support to the long tube. Thickness of the standoff is calculated to define and enforce a specified separation distance between liner and injector, as well as to provide dual alignment points at the base of the liner and at the tip of the injector.