Company Filing History:

13 out of 446

Kabushiki Kaisha Suwa Seikosha

patents

3 out of 33,404

Seiko Epson Corporation

where one patent can have more than one assignee

Years Active: 1976-1991

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16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5038329 - Step motor control mechanism for electronic timepiece (1991-08-06),

2. 4715725 - Step motor control mechanism for electronic timepiece (1987-12-29),

3. 4599005 - Step motor control mechanism for electronic timepiece (1986-07-08),

4. 4577203 - Ink jet recording apparatus (1986-03-18),

5. 4522507 - Step motor control mechanism for electronic timepiece (1985-06-11),

6. 4370065 - Step motor control mechanism for electronic timepiece (1983-01-25),

7. 4262353 - Transducer for electronic timepiece (1981-04-14),

8. 4227135 - Step motor driving circuit (1980-10-07),

9. 4212156 - Step motor control mechanism for electronic timepiece (1980-07-15),

10. 4192131 - Step motor control mechanism for electronic timepiece (1980-03-11),

11. 4105902 - Touch sensitive input for electronic wristwatch and/or electronic (1978-08-08),

12. 4103191 - Step motor (1978-07-25),

13. 4093992 - Electronic wristwatch (1978-06-06),

14. 3991332 - Stepping motor (1976-11-09),

15. 3978654 - Motion transformer (1976-09-07),

Title: The Innovative Journey of Yoshikazu Kawamura

Introduction

Yoshikazu Kawamura, an accomplished inventor based in Suwa, Japan, holds an impressive portfolio of 16 patents. His contributions to the field of technology, particularly in electronic timepieces, have showcased his commitment to innovation and excellence.

Latest Patents

Among his latest inventions is a step motor control mechanism designed specifically for electronic timepieces. This innovative control mechanism effectively reduces current consumption by utilizing load detection circuitry that monitors the load conditions of the step motor. The mechanism generates a load condition signal that represents a predetermined load condition. Additionally, the driving and control circuitry receives both a low frequency timekeeping signal from a divider circuit and the load detection signal. By adapting the pulse width duration of the drive signal applied to the step motor, the mechanism enhances the efficiency and performance of electronic timepieces.

Career Highlights

Kawamura has significantly impacted the watch industry through his work with notable companies, including Kabushiki Kaisha Suwa Seikosha and Seiko Epson Corporation. His extensive experience at these firms highlights his technical proficiency and innovative mindset, contributing to advancements in electronic timekeeping.

Collaborations

Throughout his career, Kawamura has collaborated with talented individuals such as Sakiho Okazaki and Minoru Hosokawa. These partnerships have fostered a creative environment, driving innovations and furthering the development of new technologies within the industry.

Conclusion

Yoshikazu Kawamura's journey as an inventor is marked by significant contributions to the field of electronic timepieces. His latest patents and collaborations reflect his dedication to reducing energy consumption and enhancing the functionality of timekeeping devices. With 16 patents to his name, Kawamura continues to be a prominent figure in innovation, inspiring future generations of inventors.

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