Kumada; Akio
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kumada; Akio.The latest application filed is for "piezoelectric revolving resonator and single-phase ultrasonic motor".
- Kumada; Akio - Kokubunji JP
- Kumada; Akio - Tokyo JP
- Kumada; Akio - Toride JP
- Kumada; Akio - Kodaira JA
- Kumada; Akio - Kokubungi JA
- Kumada; Akio - Kodaire JA
- Kumada; Akio - Kodaira-shi JA
| Patent | Date |
|---|---|
| Piezoelectric revolving resonator and single-phase ultrasonic motor Grant 5,008,581 - Kumada , et al. April 16, 1 | 1991-04-16 |
| Piezo electric motor Grant 4,947,076 - Kumada August 7, 1 | 1990-08-07 |
| Piezoelectric revolving resonator and ultrasonic motor Grant 4,868,446 - Kumada September 19, 1 | 1989-09-19 |
| Torsional mode ultrasonic vibrator Grant 4,663,556 - Kumada May 5, 1 | 1987-05-05 |
| Laser surgical apparatus Grant 4,478,217 - Shimada , et al. October 23, 1 | 1984-10-23 |
| Piezoelectric ceramic transducer Grant 4,471,258 - Kumada September 11, 1 | 1984-09-11 |
| Ceramic transparent piezoelectric transducer Grant 4,367,426 - Kumada , et al. January 4, 1 | 1983-01-04 |
| Transparent flat panel piezoelectric speaker Grant 4,352,961 - Kumada , et al. October 5, 1 | 1982-10-05 |
| Dielectric matrix device Grant 4,071,841 - Kumada January 31, 1 | 1978-01-31 |
| Irregular ferroelectric element devised for motion of plural domain-walls Grant 4,046,455 - Kumada , et al. September 6, 1 | 1977-09-06 |
| Ferroelectric analog memory device and method of operating the same Grant 3,990,057 - Kumada November 2, 1 | 1976-11-02 |
| Light modulator element Grant RE28,971 - Kumada , et al. September 21, 1 | 1976-09-21 |
| Method of writing and erasing information for electrooptic ceramic memories Grant 3,973,247 - Kumada , et al. August 3, 1 | 1976-08-03 |
| Light control element having a wide viewing angle Grant 3,923,379 - Kumada December 2, 1 | 1975-12-02 |
| Optical Switch Grant 3,838,906 - Kumada October 1, 1 | 1974-10-01 |
| Holographic Memory With Ferroelectric-ferroelastic Page Composer Grant 3,833,281 - Kumada September 3, 1 | 1974-09-03 |
| Method And Device For Color Modulation Grant 3,813,144 - Kumada , et al. May 28, 1 | 1974-05-28 |
| A Ferroelectric-ferroelastic Electrically Operated Optical Shutter Device Grant 3,684,351 - Kumada August 15, 1 | 1972-08-15 |
| Ferroelectric Storage Device Using Gadolinium Molybdate Grant 3,623,031 - Kumada November 23, 1 | 1971-11-23 |
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