Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5235159 | Control system, method of operating a heating apparatus and controlled heating apparatus | William P. Kornrumpf, Robert P. Alley | 1993-08-10 |
| RE33691 | Piezoelectric ceramic switching devices and systems and method of making the same | William P. Kornrumpf | 1991-09-17 |
| RE33618 | Method for initially polarizing and centering a piezoelectric ceramic switching device | William P. Kornrumpf | 1991-06-25 |
| RE33587 | Method for (prepolarizing and centering) operating a piezoceramic power switching device | William P. Kornrumpf, George A. Farrall | 1991-05-14 |
| RE33577 | Advanced piezoceramic power switching devices employing protective gastight enclosure and method of manufacture | William P. Kornrumpf, George A. Farrall | 1991-04-23 |
| RE33568 | Piezoelectric ceramic switching devices and systems and methods of making the same | William P. Kornrumpf | 1991-04-09 |
| 4967568 | Control system, method of operating an atmospheric cooling apparatus and atmospheric cooling apparatus | William P. Kornrumpf | 1990-11-06 |
| 4819126 | Piezoelectic relay module to be utilized in an appliance or the like | William P. Kornrumpf | 1989-04-04 |
| 4764714 | Electronic starting circuit for an alternating current motor | Robert P. Alley, William P. Kornrumpf | 1988-08-16 |
| 4755706 | Piezoelectric relays in sealed enclosures | William P. Kornrumpf | 1988-07-05 |
| 4742263 | Piezoelectric switch | William P. Kornrumpf, James E. Kohl, Michael Adler | 1988-05-03 |
| 4714847 | Advanced piezoeceramic power switching devices employing protective gastight enclosure and method of manufacture | William P. Kornrumpf, George A. Farrall | 1987-12-22 |
| 4697118 | Piezoelectric switch | William P. Kornrumpf, James E. Kohl, Michael Adler | 1987-09-29 |
| 4689517 | Advanced piezoceramic power switching devices employing protective gastight enclosure and method of manufacture | William P. Kornrumpf, George A. Farrall | 1987-08-25 |
| 4680840 | Method for prepolarizing and centering a piezoceramic power switching device | William P. Kornrumpf, George A. Farrall | 1987-07-21 |
| 4678957 | Piezoelectric ceramic switching devices and systems and methods of making the same | William P. Kornrumpf | 1987-07-07 |
| 4670682 | Piezoelectric ceramic switching devices and systems and method of making the same | William P. Kornrumpf | 1987-06-02 |
| 4669160 | Method for prepolarizing and centering a piezoelectric ceramic switching device | William P. Kornrumpf | 1987-06-02 |
| 4658154 | Piezoelectric relay switching circuit | William P. Kornrumpf | 1987-04-14 |
| 4626698 | Zero crossing synchronous AC switching circuits employing piezoceramic bender-type switching devices | William P. Kornrumpf, George A. Farrall | 1986-12-02 |
| 4584525 | Current-shunt system for known conductors | Henry A. F. Rocha, Milton D. Bloomer | 1986-04-22 |
| 4561314 | Magnetoelastic force/pressure sensor | Robert P. Alley, William P. Kornrumpf | 1985-12-31 |
| 4559496 | LCD Hook-on digital ammeter | William P. Kornrumpf | 1985-12-17 |
| 4546658 | Piezoelectric force/pressure sensor | Henry A. F. Rocha | 1985-10-15 |
| 4489234 | Radiant-energy heating and/or cooking apparatus with honeycomb coverplate | William P. Kornrumpf, Fred F. Holub | 1984-12-18 |