Keizo Amagami

This inventor holds 17 USPTO granted patents. Top assignees: Matsushita Electric Industrial Co., Ltd., Kyokuto Electric Company, Limited. Active years: 1976-1984.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keizo Amagami. Retrieved from https://idiyas.com/inventor/keizo-amagami

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

USPTO Granted Patents = 17

% Patents Active = 100.0

Average Co-Inventor Count = 4.1

ph-index = 12

Forward Citations = 308(Granted Patents)

Location History:

Kodama, JA (1976)
Takatsuki, JA (1977)
Kadoma, JA (1976 - 1978)
Kadoma, JP (1978 - 1982)
Takatsuki, JP (1984)

Company Filing History:

17 out of 27,375

Matsushita Electric Industrial Co., Ltd.

patents

1 out of 3

Kyokuto Electric Company, Limited

patents

where one patent can have more than one assignee

Years Active: 1976-1984

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17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4490596 - Induction cooking apparatus having cooling arrangement therefor (1984-12-25),

2. 4447691 - Circuit for detecting a utensil load placed asymmetrically relative to (1984-05-08),

3. 4446350 - Induction heating cooking apparatus (1984-05-01),

4. 4317975 - Induction heating apparatus with means for detecting zero crossing point (1982-03-02),

5. 4147910 - Power adjustment with variable frequency and duty-cycle control for (1979-04-03),

6. 4145592 - Induction heating apparatus with means for detecting zero crossing point (1979-03-20),

7. 4129767 - Induction heating apparatus having timing means responsive to temporary (1978-12-12),

8. 4114009 - Switching and heat control mechanism for induction heating cooking (1978-09-12),

9. 4092510 - Multiple-load induction heating cooking apparatus with means for (1978-05-30),

10. 4074101 - Induction heating apparatus using a pair of inversely parallel connected (1978-02-14),

11. 4055740 - Induction heating apparatus using a saturable reactor for power control (1977-10-25),

12. 4016392 - Pan detector for induction heating apparatus (1977-04-05),

13. 4016390 - Induction heating apparatus with protective circuit arrangement (1977-04-05),

14. 4002875 - High frequency heating apparatus (1977-01-11),

15. 3993885 - Pan detector for an induction heating apparatus (1976-11-23),

Title: **Keizo Amagami: Innovator in Induction Cooking Technology**

Introduction

Keizo Amagami, hailing from Kadoma, Japan, is an accomplished inventor with a significant contribution to the field of induction cooking technology. With a total of 17 patents to his name, Amagami's innovations focus on enhancing the efficiency and safety of induction cooking appliances.

Latest Patents

Among his recent breakthroughs, Amagami has developed an "Induction Cooking Apparatus Having Cooling Arrangement Therefor" and a unique "Circuit for Detecting a Utensil Load Placed Asymmetrically Relative to." These inventions utilize a configuration of magnetic field sensors positioned near the edges of a flat, spiral induction heating coil, energized by ultrasonic frequency energy. This innovative setup generates a time-varying magnetic field that can accurately detect when a magnetic utensil is placed off-center. In such instances, an output signal is triggered, providing a warning indication, thereby allowing the apparatus to reduce ultrasonic energy levels and minimize possible radio interference from leakage magnetic flux.

Career Highlights

Amagami has honed his expertise while working at reputable firms, including Matsushita Electric Industrial Co., Ltd. and Kyokuto Electric Company, Limited. His career is marked by a commitment to advancing cooking technologies that cater to modern household needs, making cooking more convenient and efficient.

Collaborations

Throughout his career, Amagami has collaborated with esteemed professionals such as Mitsuyuki Kiuchi and Takumi Mizukawa. Their combined expertise has likely contributed to the fruitful development of several patents that enhance the practicality and functionality of induction cooking systems.

Conclusion

Keizo Amagami's work exemplifies the innovative spirit that drives the modern culinary landscape. By continually focusing on safety and efficiency in cooking technology, he has made a lasting impact that benefits consumers worldwide. His contributions, evidenced by his impressive patent portfolio, ensure that induction cooking remains at the forefront of kitchen innovations.

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]