Company Filing History:

12 out of 33,418

Seiko Epson Corporation

patents

1 out of 4

Yugen Kaisha K. R & D

patents

1 out of 1

Yugen Kaisha Dijianet

patent

where one patent can have more than one assignee

Years Active: 2008-2022

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11527970 - Control method of piezoelectric driving device and piezoelectric driving device (2022-12-13),

2. 11527969 - Piezoelectric drive device and control method therefor (2022-12-13),

3. 8619929 - Positioning signal reception device and control method of positioning signal reception device (2013-12-31),

4. 8412140 - Method of canceling noise contained in received signal (2013-04-02),

5. 8340583 - Receiver circuit, electronic instrument, and signal processing method (2012-12-25),

6. 8300678 - Multipath signal determination method, signal suitability determination method, positioning operation method, program, and multipath signal determination circuit (2012-10-30),

7. 7979029 - Receiver circuit, electronic instrument, and signal processing method (2011-07-12),

8. 7948193 - Single phase AC synchronous motor (2011-05-24),

9. 7860475 - Method of canceling noise contained in received signal (2010-12-28),

10. 7830303 - Coherent integration enhancement method, positioning method, storage medium, coherent integration enhancement circuit, positioning circuit, and electronic instrument (2010-11-09),

11. 7642954 - Positioning apparatus, control method of positioning apparatus, control program for positioning apparatus, and computer-readable recording medium having control program for positioning apparatus recorded therein (2010-01-05),

12. 7620132 - Positioning signal reception device and control method of positioning signal reception device (2009-11-17),

13. 7365679 - Positioning apparatus, control method of positioning apparatus, control program for positioning apparatus, and computer-readable recording medium having control program for positioning apparatus recorded therein (2008-04-29),

Title: Innovations of Makoto Murakami

Introduction

Makoto Murakami is a prominent inventor based in Nagano, Japan. He has made significant contributions to the field of piezoelectric technology, holding a total of 13 patents. His work focuses on enhancing the efficiency and control of piezoelectric drive devices.

Latest Patents

Among his latest patents is a piezoelectric drive device and control method. This invention involves a control unit that calculates the maximum deceleration applied to a driven part using the friction force and mass of the driven part. It also calculates the distance to a target position and determines a reference velocity for the driven part. The control method ensures that the drive force is applied when the driven part's velocity is below the reference velocity, and a brake force is applied when it meets or exceeds that velocity. Another notable patent is the control method of a piezoelectric driving device, which includes a vibrator and a driven unit that moves based on the vibrator's vibrations. This method stops the application of the drive signal when the driven unit reaches a reference speed.

Career Highlights

Makoto Murakami has worked with notable companies such as Seiko Epson Corporation and Yugen Kaisha K. R & D. His experience in these organizations has allowed him to develop and refine his innovative ideas in piezoelectric technology.

Collaborations

Throughout his career, Murakami has collaborated with talented individuals, including Fumito Komatsu and Hideaki Osada. These partnerships have contributed to the advancement of his inventions and the development of new technologies.

Conclusion

Makoto Murakami's contributions to piezoelectric technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the field and inspire future innovations.

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