Ring for use in a semiconductor wafer heat processing apparatus

Ishii January 19, 1

Patent Grant D404372

U.S. patent number D404,372 [Application Number D/083,715] was granted by the patent office on 1999-01-19 for ring for use in a semiconductor wafer heat processing apparatus. This patent grant is currently assigned to Tokyo Electron Limited. Invention is credited to Katsutoshi Ishii.


United States Patent D404,372
Ishii January 19, 1999

Ring for use in a semiconductor wafer heat processing apparatus

Claims

I claim the ornamental design for a ring for use in a semiconductor wafer heat processing apparatus, as shown and described.
Inventors: Ishii; Katsutoshi (Shiroyama-machi, JP)
Assignee: Tokyo Electron Limited (Tokyo-To, JP)
Appl. No.: D/083,715
Filed: February 12, 1998

Foreign Application Priority Data

Aug 20, 1997 [JP] 9-65106
Current U.S. Class: D13/182
Current International Class: 1303
Field of Search: ;D13/182 ;D15/144,144.1,199 ;414/935-941,217,147 ;437/247,946

References Cited [Referenced By]

U.S. Patent Documents
4857689 August 1989 Lee
5314574 May 1994 Takahashi
5320218 June 1994 Yamashita et al.
5752796 May 1998 Muka
Primary Examiner: Vinson; Brian N.
Attorney, Agent or Firm: Ladas & Parry

Description



FIG. 1 a perspective view of a ring for use in a semiconductor wafer heat processing apparatus;

FIG. 2 a top plan view thereof;

FIG. 3 a front elevational view thereof;

FIG. 4 a bottom plan view thereof;

FIG. 5 a right side view thereof;

FIG. 6 a rear elevational view thereof; and,

FIG. 7 a cross-sectional view taken along line VII--VII in FIG. 3.

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