Exhaust ring for manufacturing semiconductors

Tezuka , et al. August 17, 2

Patent Grant D494552

U.S. patent number D494,552 [Application Number D/183,537] was granted by the patent office on 2004-08-17 for exhaust ring for manufacturing semiconductors. This patent grant is currently assigned to Tokyo Electron Limited. Invention is credited to Norihiko Amikura, Takashi Kitazawa, Hiroshi Koizumi, Kazuyuki Tezuka.


United States Patent D494,552
Tezuka ,   et al. August 17, 2004

Exhaust ring for manufacturing semiconductors

Claims

We claim the ornamental design for exhaust ring for manufacturing semiconductors, as shown and described.
Inventors: Tezuka; Kazuyuki (Nirasaki, JP), Kitazawa; Takashi (Nirasaki, JP), Amikura; Norihiko (Nirasaki, JP), Koizumi; Hiroshi (Nirasaki, JP)
Assignee: Tokyo Electron Limited (Tokyo, JP)
Appl. No.: D/183,537
Filed: June 12, 2003

Foreign Application Priority Data

Dec 12, 2002 [JP] 2002-034492
Dec 12, 2002 [JP] 2002-034497
Current U.S. Class: D13/182
Current International Class: 1303
Field of Search: ;D13/182 ;D8/399 ;D15/144 ;118/666,715,733 ;219/444.1 ;414/147,217,247,935-941 ;438/482,706,716,758 ;451/285

References Cited [Referenced By]

U.S. Patent Documents
5310453 May 1994 Fukasawa et al.
D404370 January 1999 Kimura
D404372 January 1999 Ishii
6068441 May 2000 Raaijmakers et al.
6155915 December 2000 Raeder
2003/0017714 January 2003 Taniyama et al.
2003/0124820 July 2003 Johnsgard et al.
2004/0025788 February 2004 Ogasawara et al.
2004/0056017 March 2004 Renken
Primary Examiner: Deshmukh; Prabhakar
Assistant Examiner: Sikder; Selina
Attorney, Agent or Firm: Ladas & Parry

Description



FIG. 1 is a front/top/right-side perspective view of an exhaust ring for manufacturing semiconductors showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right-side elevational view thereof, the left-side elevational view being a mirror image and, therefore, not shown;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a reference front elevational view;

FIG. 8 is a cross-sectional view taken along line 8--8 in FIG. 7;

FIG. 9 is an enlarged, partial, cross-sectional view taken along line 9--9 in FIG. 8; and,

FIG. 10 is an enlarged, partial, cross-sectional view taken along line 10--10 in FIG. 8.

The exhaust ring for manufacturing semiconductors is used in a vacuum vessel for manufacturing semiconductors.

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