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:
Feb. 20, 1996
Filed:
Nov. 12, 1993
Takashi Tanaka, Hadano, JP;
Jun Yoshikawa, Sagamihara, JP;
Eiichi Toya, Nishiokitama, JP;
Atsuo Kitazawa, Nishiokitama, JP;
Kazunori Meguro, Oomiya, JP;
Tatsuo Nozawa, Nishiokitama, JP;
Yutaka Ishizuka, Okitama, JP;
Yoshiyuki Watanabe, Nishiokitama, JP;
Masaru Seino, Okitama, JP;
Hideo Nakanishi, Minamiashigara, JP;
Toshiba Ceramics Co., Ltd., Tokyo, JP;
Abstract
A vertical boat for holding a plurality of semiconductor wafers comprising two end members (2) positioned at the top and the bottom of the vertical boat, and a plurality of support members (3,4,5,6,104) vertically mounted on the end members (2) for supporting the wafers, wherein each support member (3,4,5,6,104) is formed by a plate-like member having a series of slits (9,10,7,8,108) formed thereon in such a manner that a plurality of support arms are defined by the slits (9,10,7,8,108) at a predetermined interval, each support arm having a support projection (11,12,13,14,112) formed at the end thereof, and wherein the inner portions (P) of the wafer (1) is to be supported by the support projections (11,12,13,14,112) whereas the periphery of the wafer (1) does not contact the arms of the support members (3,4,5,6,104). The slits can be formed in two steps: forming a series of first slit portions on the plate-like member at a predetermined interval so as to retain two side walls of the plate-like member; and forming a series of second small slit portions on one of the side walls at the same interval so as to connect each second slit portion to the corresponding first slit portion.