Patent
   D426521
Priority
Jan 31 1997
Filed
Jul 24 1997
Issued
Jun 13 2000
Expiry
Jun 13 2014
Assg.orig
Entity
unknown
3
4
n/a
I claim the ornamental design for quartz fin heat retaining tube, as shown.

FIG. 1 a perspective view of a quartz fin heat retaining tube.

FIG. 2 is a top plan view thereof.

FIG. 3 a front elevational view thereof, the rear elevational view being a mirror image of the front view.

FIG. 4 a left side view thereof.

FIG. 5 a right side view thereof.

FIG. 6 a bottom plan view thereof.

FIG. 7 a cross sectional view thereof taken along line 7--7 in FIG. 2; and,

FIG. 8 a cross sectional view thereof taken along line 8--8 in FIG. 3.

Ishii, Katsutoshi

Patent Priority Assignee Title
D793974, Sep 29 2015 KOKUSAI ELECTRIC CORPORATION Heater for semiconductor thermal process
D793975, Sep 29 2015 KOKUSAI ELECTRIC CORPORATION Heater for semiconductor thermal process
D795209, Sep 29 2015 KOKUSAI ELECTRIC CORPORATION Heater for semiconductor thermal process
Patent Priority Assignee Title
5303671, Feb 07 1992 Tokyo Electron Limited System for continuously washing and film-forming a semiconductor wafer
5482558, Mar 18 1993 Tokyo Electron Limited Heat treatment boat support
D361752, Sep 17 1993 Tokyo Electron Kabushiki Kaisha; Tokyo Electron Tohoku Kabushiki Kaisha Wafer boat or rack for holding semiconductor wafers
D380454, May 30 1995 Tokyo Electron Limited Wafer boat
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Jul 24 1997Tokyo Electron Limited(assignment on the face of the patent)
Nov 08 1997ISHII, KATSUTOSHITokyo Electron LimitedASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0088430742 pdf
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