Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6425737 | Turbine | — | 2002-07-30 |
| 6308513 | Turbine and gas turbine | — | 2001-10-30 |
| 6202782 | Vehicle driving method and hybrid vehicle propulsion system | — | 2001-03-20 |
| 6089024 | Steam-augmented gas turbine | — | 2000-07-18 |
| 5694773 | Closed cycle gas turbine engine and mechanical system driven thereby | — | 1997-12-09 |
| 5500581 | High-efficiency power supply control apparatus for variable-speed induction motor | Naruto Kuwahara | 1996-03-19 |
| 5442271 | Induction motor control apparatus providing high efficiency with rapid response to changes in load torque | Naruto Kuwahara | 1995-08-15 |
| 5241256 | Method and apparatus for controlling the supply of power to an induction motor to maintain high efficiency under varying load conditions | Naruto Kuwahara | 1993-08-31 |
| 5204606 | Induction motor control apparatus | Naruto Kuwahara | 1993-04-20 |
| D319064 | Cutter disc for a paper shredder | — | 1991-08-13 |
| D319065 | Cutter disc for a paper shredder | — | 1991-08-13 |
| 4914375 | Saturable reactor apparatus for automatic control of power factor of inductive load | — | 1990-04-03 |
| 4844366 | Waste material shredder | — | 1989-07-04 |
| 4776525 | Waste material shredder | — | 1988-10-11 |
| D297240 | Cutter disk for paper shredding machine | — | 1988-08-16 |
| D292590 | Paper shredder cutter disc | — | 1987-11-03 |
| 4690340 | Waste material shredder | — | 1987-09-01 |
| D265910 | Paper shredder or the like | — | 1982-08-24 |
| D265909 | Paper shredder or the like | — | 1982-08-24 |
| D265911 | Paper shredder or the like | — | 1982-08-24 |
| 4260115 | Document shredder | — | 1981-04-07 |
| 4257565 | Desk-top shredder | — | 1981-03-24 |
| 4231530 | Automatic document shredder | — | 1980-11-04 |
| 4192467 | Document shredder | — | 1980-03-11 |