Company Filing History:

9 out of 2,333

Hitachi Metals, Ltd.

where one patent can have more than one assignee

Years Active: 1991-2001

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6221271 - Piezoelectric sintered ceramics and piezoelectric ceramic elements constituted thereby (2001-04-24),

2. 5684884 - Piezoelectric loudspeaker and a method for manufacturing the same (1997-11-04),

3. 5281885 - High-temperature stacked-type displacement device (1994-01-25),

4. 5233260 - Stack-type piezoelectric element and process for production thereof (1993-08-03),

5. 5163209 - Method of manufacturing a stack-type piezoelectric element (1992-11-17),

6. 5153477 - Laminate displacement device (1992-10-06),

7. 5144528 - Laminate displacement device (1992-09-01),

8. 5092360 - Flow rated control valve using a high-temperature stacked-type (1992-03-03),

9. 5073740 - Laminate-type displacement element (1991-12-17),

Title: Shigeru Jomura: Innovator in Piezoelectric Technology

Introduction

Shigeru Jomura is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of piezoelectric materials, holding a total of 9 patents. His work has advanced the understanding and application of piezoelectric ceramics and devices.

Latest Patents

Among his latest patents, Jomura has developed a piezoelectric sintered ceramic that consists of a specific composition designed to enhance its properties. This ceramic is made from 100 parts by weight of main components represented by the formula: (Pb,M,)(Zr,Ti,)O,, where M includes elements like Sr, Ba, and Ca. Additionally, he has created a piezoelectric loudspeaker that features a flat compound piezoelectric sheet with multiple devices arranged in an organic material. This innovative design allows for sound reproduction with desirable frequency properties and minimal distortion.

Career Highlights

Throughout his career, Jomura has worked with notable companies such as Hitachi Metals, Ltd. and Hitachi, Ltd. His experience in these organizations has contributed to his expertise in piezoelectric technology and materials.

Collaborations

Jomura has collaborated with several talented individuals in his field, including Junichi Watanabe and Yoshiyuki Watanabe. These collaborations have likely enriched his research and development efforts.

Conclusion

Shigeru Jomura's contributions to piezoelectric technology have made a lasting impact in the field. His innovative patents and collaborations highlight his dedication to advancing this important area of research.

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