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% Expired Patents = 20.0

EPO Patents = 1

Forward Citations = 33

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12 inventors (with patents filed for the assignee):

Kimihiro Shimono (3 out of 3 patents)

Takahiro Takeda (3 out of 3 patents)

Kazutoshi Teraoka (3 out of 3 patents)

4. Fumihito Kasagi (3 out of 3 patents)

5. Osamu Shiraishi (1 out of 1 patent)

6. Takushi Tamamura (1 out of 1 patent)

7. Toshinori Yasutomi (1 out of 2 patents)

8. Katsuhiko Maeda (1 out of 1 patent)

9. Minoru Okamoto (1 out of 1 patent)

10. Matsuo Ohtaka (1 out of 1 patent)

11. Yasunori Motoi (1 out of 1 patent)

12. Makoto Numazawa (1 out of 2 patents)

5 patents: Sort by Forward Citations

1. 9631869 - Powder supply device and powder supply method (2017-04-25),

2. 9573775 - Powder supply apparatus and powder supply method (2017-02-21),

3. 9296570 - Powder supply device and powder supply method (2016-03-29),

4. 8603339 - Activated sludge material, method for reducing excess sludge production in bioreactor, and method of controlling bioreactor (2013-12-10),

5. 5285735 - Control apparatus for injection quantity of pulverized coal to blast (1994-02-15),

Diamond Engineering Co., Ltd. is a leading provider of engineering solutions for various industries. With a strong focus on quality and innovation, we deliver cutting-edge products and services to our clients. Our team of experienced engineers and technicians ensure that every project is completed to the highest standards of excellence. From design and manufacturing to installation and maintenance, we offer comprehensive solutions to meet our clients' needs. Visit our website to learn more about our services and capabilities.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

5 Patents

#31 in Toyama 939-0643

#6,649 in Japan

Toyama, Japan

Diamond Engineering Co., Ltd.