logo

For the Inventor, By the Inventor

Kokubunji, Japan

Akio Kumada

This inventor holds 20 USPTO granted patents, primarily in Piezoelectric Devices. Top assignees: Hitachi, Ltd., Hitachi Maxell, Limited, Demix Technology Inc.. Active years: 1976-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Akio Kumada. Retrieved from https://idiyas.com/inventor/akio-kumada

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 20

% Patents Active = 100.0

Average Co-Inventor Count = 1.6

ph-index = 11

Forward Citations = 336(Granted Patents)


Location History:

  • Kokubungi, JA (1976)
  • Kokubunji, JA (1976 - 1978)
  • Kodaira, JA (1976 - 1978)
  • Toride, JP (1989)
  • Tokyo, JP (1990)
  • Kokubunji, JP (1979 - 1991)

Company Filing History:

goldMedal15 out of 42,731 
 
Hitachi, Ltd.
 patents
silverMedal5 out of 1,112 
 
Hitachi Maxell, Limited
 patents
bronzeMedal1 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

Loading Chart...
Areas of Expertise:
Piezoelectric Motor
Ultrasonic Motor
Ceramic Transducer
Vibrator
Ferroelectric Element
Transparent Speaker
Laser Surgical Apparatus
Electro-Optical Device
Bimorph Type Transducer
Display Device
Sound Generator
Domain Switching
20 patents (USPTO):Explore 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.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Loading…