Helmut Pieper

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Lohr am Main, DT

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Patents Grantslast 30 patents

Information Patent Grant
Glass melting furnace and process for improving the quality of glass
- Patent number 4,046,547
- Issue date Sep 6, 1977
- Sorg GmbH & Co. KG
- Helmut Pieper
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method and apparatus for the indirect heating of glass-carrying pas...
- Patent number 4,027,091
- Issue date May 31, 1977
- SORG GmbH & Co.
- Helmut Pieper
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method and apparatus for melting glass
- Patent number 4,012,218
- Issue date Mar 15, 1977
- Helmut Sorg
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of dyeing and treating glass streams
- Patent number 4,004,902
- Issue date Jan 25, 1977
- Nikolaus Sorg G.m.b.H. & Co.
- Helmut Pieper
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method and apparatus for melting and subsequently refining glass
- Patent number 3,942,968
- Issue date Mar 9, 1976
- Nikolaus Sorg GmbH & Co.
- Helmut Pieper
- C03 - GLASS MINERAL OR SLAG WOOL