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:
Jan. 09, 1996
Filed:
Apr. 28, 1995
Masayuki Imai, Kofu, JP;
Takeshi Kurebayashi, Yamanashi, JP;
Tokyo Electron Kabushiki Kaisha, Tokyo, JP;
Tokyo Electron Tohoku Kabushiki, Iwate, JP;
Abstract
A heat treatment boat for mounting a number of disc-shaped objects to be treated at a vertical interval for heat treatment thereof in a vertical heat treatment furnace comprises arcuate or ring-shaped support members provided on support rods at a vertical interval for supporting the objects to be treated in surface contact with the undersides of peripheral parts of the objects to be treated. The heat treatment boat is disposed on a ring-shaped intermediate member of high radiant heat absorption disposed on a heat insulating cylinder. The heat treatment boat comprises support rods which are planted on an annular support member circumferentially in accordance with a contour of the objects to be treated and whose upper ends are secured to an annular fixation member. The heat treatment boat of such constitution can reduce occurrences of slips in the disc-shaped objects when heat treated.