Quartz process tube
Hanagata , et al. April 25, 2
U.S. patent number D423,463 [Application Number D/074,280] was granted by the patent office on 2000-04-25 for quartz process tube. This patent grant is currently assigned to Tokyo Electron Limited. Invention is credited to Testuya Hanagata, Shingo Watanabe.
| United States Patent | D423,463 |
| Hanagata , et al. | April 25, 2000 |
Quartz process tube
Claims
The ornamental design for a quartz process tube, as shown.
| Inventors: | Hanagata; Testuya (Tokyo, JP), Watanabe; Shingo (Kanagawa, JP) |
|---|---|
| Assignee: | Tokyo Electron Limited
(Tokyo-To, JP) |
| Appl. No.: | D/074,280 |
| Filed: | July 24, 1997 |
Foreign Application Priority Data
| Jan 31, 1997 [JP] | 9-2643 | |||
| Current U.S. Class: | D13/182 |
| Current International Class: | 1303 |
| Field of Search: | ;D23/340 ;D13/182 ;D15/144,144.1,199 ;392/416,418 ;118/724,725,500 |
References Cited [Referenced By]
U.S. Patent Documents
| 5303671 | April 1994 | Fondo et al. |
| 5458685 | October 1995 | Hasebe et al. |
| 5520742 | May 1996 | Ohkase |
| 5536918 | July 1996 | Ohkase et al. |
Attorney, Agent or Firm: Ladas & Parry
Description
FIG. 1 a perspective view of a quartz process tube.
FIG. 2 a front elevational view thereof.
FIG. 3 a top plan view thereof.
FIG. 4 a bottom plan view thereof.
FIG. 5 a cross sectional view thereof taken along line 5--5 in FIG. 2.
FIG. 6 a rear elevational view thereof.
FIG. 7 a left side view thereof.
FIG. 8 a right side view thereof.
FIG. 9 a cross sectional view thereof taken along line 9--9 in FIG. 3; and,
FIG. 10 a cross sectional view thereof taken along line 10--10 in FIG. 3.
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