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Hitachi Powdered Metals Co., Ltd.

USPTO Granted Patents = 149

EPO Patents = 19

Forward Citations = 1,004

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229 inventors (with patents filed for the assignee):

Chio Ishihara (17 out of 25 patents)

Kei Ishii (17 out of 18 patents)

Hideaki Kawata (16 out of 26 patents)

4. Koichiro Hayashi (15 out of 17 patents)

5. Hideo Shikata (15 out of 17 patents)

6. Kazuo Asaka (14 out of 15 patents)

7. Motohiro Miyasaka (13 out of 15 patents)

8. Zenzo Ishijima (11 out of 12 patents)

9. Akira Fujiki (10 out of 25 patents)

10. Tadayuki Tsutsui (10 out of 10 patents)

11. Yutaka Ikenoue (10 out of 10 patents)

12. Hiroyuki Endo (9 out of 20 patents)

13. Yuji Enomoto (8 out of 66 patents)

14. Motoya Ito (8 out of 28 patents)

15. Katsutoshi Nii (8 out of 36 patents)

Core Competencies:

Sintered Alloys

Powder Magnetic Cores

Iron-Based Sintered Components

Thermoelectric Conversion Modules

Oil-Impregnated Bearings

Electroconductive Materials

Soft Magnetic Powders

Electric Rotary Machines

Wear Resistant Alloys

Glass Compositions

Composite Sintered Components

Lithium Ion Batteries

149 patents: Sort by Forward Citations

1. 10006111 - Sintered alloy and manufacturing method thereof (2018-06-26),

2. 9646756 - Powder magnetic core and method for producing the same (2017-05-09),

3. 9637811 - Iron-based sintered sliding member and production method therefor (2017-05-02),

4. 9566639 - Production method for sintered member (2017-02-14),

5. 9492867 - Forming die assembly for microcomponents (2016-11-15),

6. 9441286 - Oil-impregnated sintered bearing and production method therefor (2016-09-13),

7. 9340857 - Sintered alloy and production method therefor (2016-05-17),

8. 9260772 - Hard phase forming alloy powder, wear resistant sintered alloy, and production method for wear resistant sintered alloy (2016-02-16),

9. 9246076 - Thermoelectric conversion module and production method therefor (2016-01-26),

10. 9212572 - Sintered valve guide and production method therefor (2015-12-15),

11. 9174278 - Substantially cylindrical powder compact and die assembly for compacting powder (2015-11-03),

12. 9048056 - Glass composition and covering and sealing members using same (2015-06-02),

13. 8895460 - Glass composition, electrically conductive paste composition comprising same, electrode wiring member, and electronic component (2014-11-25),

14. 8876935 - Sintered material for valve guides and production method therefor (2014-11-04),

15. 8851872 - Forming die assembly for microcomponents (2014-10-07),

Hitachi Powdered Metals Co., Ltd. is a leading manufacturer of various powdered metal products. With a focus on automotive components, electronic materials, industrial machinery parts, and energy-related products, the company is committed to delivering innovative solutions to meet the evolving needs of its customers. Through advanced technologies and a strong global network, Hitachi Powdered Metals Co., Ltd. aims to contribute to the progress of society and enhance the quality of life worldwide.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

149 Patents

#4 in Chiba

#837 in Japan

#5,347 in the World

Hitachi Powdered Metals Co., Ltd.

Forward Citations = 1,004

229 inventors:

Chio Ishihara (17 out of 25 patents)

Kei Ishii (17 out of 18 patents)

Hideaki Kawata (16 out of 26 patents)

4. Koichiro Hayashi (15 out of 17 patents)

5. Hideo Shikata (15 out of 17 patents)

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