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. 15, 1989
Filed:
Mar. 23, 1988
Chunghsin Lee, Lynnfield, MA (US);
High Temperature Engineering Corporation, Danvers, MA (US);
Abstract
A semiconductor wafer processing furnace includes an elongated processing chamber enclosing a first zone and a second zone extending along a first reference axis, and a wafer support assembly having a support member and associated translation elements for selectively translating the support member between the zones, along the first reference axis, in response to an applied position signal. Temperature elements control the first and second zones to have selected first and second temperatures, respectively. A controller applies the position signal to the translation elements, in response to an applied control signal representative of a desired temperature of the region surrounding the support member. Responsive to the position signal, the translation elements position the support member along the reference axis such that the temperature of the region surrounding the support member substantially matches the desired temperature.