Piotrowski; Leo R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Piotrowski; Leo R..The latest application filed is for "fabrication of vertical npn and pnp bipolar transistors in monolithic substrate".
- Piotrowski; Leo R. - Indian Harbour Beach FL
- Piotrowski; Leo R. - Indian Harbour FL
| Patent | Date |
|---|---|
| Fabrication of vertical NPN and PNP bipolar transistors in monolithic substrate Grant 4,717,680 - Piotrowski January 5, 1 | 1988-01-05 |
| Fabrication of vertical NPN and PNP bipolar transistors in monolithic substrate Grant 4,665,425 - Piotrowski May 12, 1 | 1987-05-12 |
| Fabrication of complementary bipolar transistors and CMOS devices with poly gates Grant 4,299,024 - Piotrowski November 10, 1 | 1981-11-10 |
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