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Patent applications and USPTO patent grants for Hirschvogel; Alfred.The latest application filed is for "packing yarn made of graphite foil and plastic foil and method of manufacturing a packing yarn".
Patent | Date |
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Packing yarn made of graphite foil and plastic foil and method of manufacturing a packing yarn Grant 6,270,083 - Hirschvogel , et al. August 7, 2 | 2001-08-07 |
Process for the preparation of a metal and graphite laminate Grant 5,509,993 - Hirschvogel April 23, 1 | 1996-04-23 |
Flexible graphite sheet material treated with an alkali metal salt containing at least one of the elements chromium, molybdenum and tungsten Grant 4,216,266 - Hirschvogel , et al. August 5, 1 | 1980-08-05 |
Method for the production of graphite-hydrogensulfate Grant 4,091,083 - Hirschvogel , et al. May 23, 1 | 1978-05-23 |
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