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Kanagawa, Japan

Komatsu Electronic Metals Co., Ltd.

USPTO Granted Patents = 142

Forward Citations = 1,400

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156 inventors (with patents filed for the assignee):

Junsuke Tomioka (17 out of 23 patents)

Yoshinobu Hiraishi (17 out of 22 patents)

Hiroshi Inagaki (12 out of 28 patents)

4. Masahiko Maeda (10 out of 12 patents)

5. Toshimichi Kubota (10 out of 11 patents)

6. Shoei Kurosaka (9 out of 11 patents)

7. Makoto Kamogawa (9 out of 12 patents)

8. Yuichi Nakayoshi (7 out of 7 patents)

9. Hirofumi Hajime (7 out of 7 patents)

10. Shigeki Kawashima (6 out of 13 patents)

11. Yoshiyuki Shimanuki (6 out of 7 patents)

12. Toshiaki Saishoji (6 out of 10 patents)

13. Toshiharu Yubitani (6 out of 6 patents)

14. Fumitaka Kai (6 out of 6 patents)

15. Mitsunori Kawabata (6 out of 7 patents)

Core Competencies:

Semiconductor Wafers

Single Crystal Manufacturing

Impurity Concentration Detection

Silicon Crystal Fabrication

Epitaxial Wafer Process

Polishing Apparatus

SOI Substrate Fabrication

Crystal Growth Techniques

Wafer Measurement Methods

Crystal Clamping Devices

Temperature Distribution Detection

Defect Density Evaluation

142 patents: Sort by Forward Citations

1. 8090544 - Method for determining concentration of impurity element (2012-01-03),

2. 7141992 - Method for measuring impurity metal concentration (2006-11-28),

3. 6877668 - Marking method for semiconductor wafer (2005-04-12),

4. 6858076 - Method and apparatus for manufacturing single-crystal ingot (2005-02-22),

5. 6777820 - Semiconductor wafer (2004-08-17),

6. 6517667 - Apparatus for polishing a semiconductor wafer (2003-02-11),

7. 6495465 - Method for appraising the condition of a semiconductor polishing cloth (2002-12-17),

8. 6325851 - Crystal manufacturing apparatus and method (2001-12-04),

9. 6315827 - Apparatus for producing single crystal (2001-11-13),

10. 6273944 - Silicon wafer for hydrogen heat treatment and method for manufacturing the same (2001-08-14),

11. 6270575 - Apparatus and a method of manufacturing a crystal (2001-08-07),

12. 6245678 - Method for manufacturing semiconductor wafers (2001-06-12),

13. 6234873 - Semiconductor mirror-polished surface wafers and method for manufacturing the same (2001-05-22),

14. 6217650 - Epitaxial-wafer fabricating process (2001-04-17),

15. 6179911 - Method for manufacturing single crystal (2001-01-30),

Komatsu Electronic Metals Co., Ltd. is a leading manufacturer and supplier of electronic materials, primarily focused on copper foil products. With a rich history spanning over 80 years, our company has established a strong reputation for providing high-quality products and excellent customer service in the global market. Our copper foil is widely used in various industries, including printed circuit boards, lithium-ion batteries, and electromagnetic shielding. As a trusted partner to our customers, we continuously strive for innovation and technological advancements to meet the evolving needs of the electronics industry.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

142 Patents

#24 in Kanagawa

#866 in Japan

#5,580 in the World

Kanagawa, Japan

Komatsu Electronic Metals Co., Ltd.

Forward Citations = 1,400

156 inventors:

Junsuke Tomioka (17 out of 23 patents)

Yoshinobu Hiraishi (17 out of 22 patents)

Hiroshi Inagaki (12 out of 28 patents)

4. Masahiko Maeda (10 out of 12 patents)

5. Toshimichi Kubota (10 out of 11 patents)

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