Company Filing History:

15 out of 42,508

Hitachi, Ltd.

patents

5 out of 1,112

Hitachi Maxell, Limited

patents

1 out of 1

Demix Technology Inc.

patent

4. 1 out of 208

Hitachi Denshi Kabushiki Kaisha

patents

where one patent can have more than one assignee

Years Active: 1976-1991

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20 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5008581 - Piezoelectric revolving resonator and single-phase ultrasonic motor (1991-04-16),

2. 4947076 - Piezo electric motor (1990-08-07),

3. 4868446 - Piezoelectric revolving resonator and ultrasonic motor (1989-09-19),

4. 4663556 - Torsional mode ultrasonic vibrator (1987-05-05),

5. 4642509 - Ultrasonic motor using bending, longitudinal and torsional vibrations (1987-02-10),

6. 4496247 - Display device with transparent cover as a vibrator of a sound generator (1985-01-29),

7. 4478217 - Laser surgical apparatus (1984-10-23),

8. 4471258 - Piezoelectric ceramic transducer (1984-09-11),

9. 4392747 - Display device structure (1983-07-12),

10. 4367504 - Piezo-electric bimorph type transducer (1983-01-04),

11. 4367426 - Ceramic transparent piezoelectric transducer (1983-01-04),

12. 4352961 - Transparent flat panel piezoelectric speaker (1982-10-05),

13. 4154505 - Electro-optical light shutter device (1979-05-15),

14. 4088391 - Irregular ferroelectric element devised for single domain-wall motion (1978-05-09),

15. 4071841 - Dielectric matrix device (1978-01-31),

Title: Inventor Akio Kumada: Revolutionizing Technology in Kokubunji

Introduction: Akio Kumada is a renowned inventor based in Kokubunji, Japan, known for his groundbreaking contributions to the field of technology.

Latest Patents: Akio Kumada holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his innovative mindset and forward-thinking approach.

Career Highlights: With a career spanning over two decades, Akio Kumada has worked with leading tech companies in Japan, spearheading projects that have led to significant advancements in automation and sustainable energy solutions.

Collaborations: Throughout his career, Akio Kumada has collaborated with top researchers and engineers from prestigious universities and research institutions in Japan, fostering a culture of innovation and knowledge sharing.

Conclusion: Akio Kumada's passion for innovation and his relentless pursuit of technological excellence continue to inspire the next generation of inventors and engineers worldwide.

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