Kirschner; Helmut
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kirschner; Helmut.The latest application filed is for "process and device for polishing semiconductor wafers".
- Kirschner; Helmut - Emmerting DE
- Kirschner; Helmut - Burghausen DT
| Patent | Date |
|---|---|
| Process and device for polishing semiconductor wafers Grant 6,095,898 - Hennhofer , et al. August 1, 2 | 2000-08-01 |
| Process for the hydrophilizing and/or cement-residue-removing surface treatment of silicon wafers Grant 5,049,200 - Brunner , et al. September 17, 1 | 1991-09-17 |
| Process for the removal of specific crystal structure defects from semiconductor discs and the product thereof Grant 4,042,419 - Heinke , et al. August 16, 1 | 1977-08-16 |
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