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Fremont, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Vortex inhibitor
Patent number
8,591,802
Issue date
Nov 26, 2013
Tetron, Inc.
Robert J. Koffron
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and apparatus for delivering metallurgically improved molten...
Patent number
7,169,349
Issue date
Jan 30, 2007
Tetron, Inc.
Robert J. Koffron
C21 - METALLURGY OF IRON
Information
Patent Grant
Vortex inhibitor with sacrificial rod
Patent number
6,723,275
Issue date
Apr 20, 2004
Tetron, Inc.
Robert J. Koffron
C21 - METALLURGY OF IRON
Information
Patent Grant
Method and apparatus for metal pouring
Patent number
6,576,039
Issue date
Jun 10, 2003
Tetron, Inc.
Robert J. Koffron
C21 - METALLURGY OF IRON
Information
Patent Grant
Vortex inhibitor for molten metal discharge
Patent number
RE37417
Issue date
Oct 23, 2001
Tetron, Inc.
Robert J. Koffron
266 - Metallurgical apparatus
Information
Patent Grant
Method and apparatus for slag separation sensing
Patent number
6,074,598
Issue date
Jun 13, 2000
Tetron, Inc.
Robert J. Koffron
C21 - METALLURGY OF IRON
Information
Patent Grant
Vortex inhibitor for molten metal discharge
Patent number
5,044,610
Issue date
Sep 3, 1991
Tetron, Inc.
Robert J. Koffron
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method and system for loading wafers
Patent number
4,886,412
Issue date
Dec 12, 1989
Tetron, Inc.
Michael J. Wooding
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Vortex inhibitor for molten metal discharge
Patent number
4,871,148
Issue date
Oct 3, 1989
Tetron, Inc.
Robert J. Koffron
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Reactor apparatus for semiconductor wafer processing
Patent number
4,694,779
Issue date
Sep 22, 1987
Tetron, Inc.
Martin L. Hammond
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Patents Applications
last 30 patents
Information
Patent Application
VORTEX INHIBITOR
Publication number
20110186602
Publication date
Aug 4, 2011
Tetron, Inc
Robert J. Koffron
C21 - METALLURGY OF IRON
Information
Patent Application
VORTEX INHIBITOR WITH SACRIFICIAL ROD
Publication number
20080116233
Publication date
May 22, 2008
Tetron, Inc
Robert J. Koffron
C21 - METALLURGY OF IRON
Information
Patent Application
Vortex inhibitor with sacrificial rod
Publication number
20040164466
Publication date
Aug 26, 2004
Tetron, Inc
Robert J. Koffron
C21 - METALLURGY OF IRON
Information
Patent Application
Method and apparatus for metal pouring
Publication number
20030004602
Publication date
Jan 2, 2003
Tetron, Inc
Robert J. Koffron
C21 - METALLURGY OF IRON
Information
Patent Application
Vortex inhibitor with sacrificial rod
Publication number
20020093128
Publication date
Jul 18, 2002
Tetron, Inc
Robert J. Koffron
C21 - METALLURGY OF IRON
Trademark
last 30 trademarks