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Erhard Sirtl
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Marktl/Inn, DE
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last 30 patents
Information
Patent Grant
Material comprising silicon and process for its manufacture
Patent number
5,164,138
Issue date
Nov 17, 1992
Heliotronic Forschungs- und Entwicklungsgesellschaft fur Solarzellen-Grundsto...
Josef Dietl
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Process for producing molded bodies from granular material of silic...
Patent number
4,767,585
Issue date
Aug 30, 1988
Heliotronic GmbH
Claus Holm
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process for the manufacture of semiconductor wafers
Patent number
4,461,671
Issue date
Jul 24, 1984
Heliotronic Forschungs- und Entwicklungs Gesellschaft fur Solarzellen-Grundst...
Dieter Seifert
C30 - CRYSTAL GROWTH
Information
Patent Grant
Process for making doped semiconductors
Patent number
4,431,475
Issue date
Feb 14, 1984
Consortium Fur Elektrochemische Industrie GmbH
Claus Holm
C30 - CRYSTAL GROWTH
Information
Patent Grant
Process for making solar cell base material
Patent number
4,366,024
Issue date
Dec 28, 1982
Heliotronic Forschungs- und Entwicklungsgesellschaft fur Solarzellen-Grundsto...
Gerhard Ast
C30 - CRYSTAL GROWTH
Information
Patent Grant
Semicontinuous process for the manufacture of pure silicon
Patent number
4,312,850
Issue date
Jan 26, 1982
Helictronic Forschungs- und Entwicklungs- Gesellschaft fur Solarzellen-Grunds...
Josef Dietl
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Method for making silicon rods
Patent number
4,312,700
Issue date
Jan 26, 1982
Helictronic Forschungs- und Entwicklungs- Gesellschaft fur Solarzellen-Grunds...
Dieter Helmreich
C30 - CRYSTAL GROWTH
Information
Patent Grant
Process for applying a protective layer to shaped carbon bodies
Patent number
4,194,028
Issue date
Mar 18, 1980
Wacher-Chemitronic Gesellschaft fur Elektronik-Grundstoffe mbH
Erhard Sirtl
C30 - CRYSTAL GROWTH
Information
Patent Grant
Process for producing large-size, self-supporting plates of silicon
Patent number
4,131,659
Issue date
Dec 26, 1978
Wacker-Chemitronic Gesellschaft fur Elektronik-Grundstoffe mbH
Bernhard Authier
C30 - CRYSTAL GROWTH
Information
Patent Grant
Process for producing large-size substrate-based semiconductor mate...
Patent number
4,113,532
Issue date
Sep 12, 1978
Wacker-Chemitronic Gesellschaft fur Elektronik-Grundstoffe mbH
Bernhard Authier
C30 - CRYSTAL GROWTH