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Osakashi, Japan

Sumitomo Special Metals Co., Ltd.

USPTO Granted Patents = 240

CIPO Patents = 1

Forward Citations = 2,663

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232 inventors (with patents filed for the assignee):

Setsuo Fujimura (26 out of 27 patents)

Yutaka Matsuura (25 out of 30 patents)

Masato Sagawa (22 out of 63 patents)

4. Toshiaki Wada (21 out of 27 patents)

5. Fumiaki Kikui (19 out of 37 patents)

6. Takeshi Nishiuchi (18 out of 36 patents)

7. Masaaki Aoki (17 out of 32 patents)

8. Osamu Yamashita (14 out of 16 patents)

9. Satoshi Hirosawa (14 out of 33 patents)

10. Kohshi Yoshimura (12 out of 22 patents)

11. Katsumi Okayama (12 out of 13 patents)

12. Hirokazu Kanekiyo (11 out of 27 patents)

13. Naoyuki Ishigaki (11 out of 14 patents)

14. Michito Miyahara (10 out of 20 patents)

15. Makoto Kawakami (10 out of 22 patents)

Core Competencies:

Permanent Magnets

Thermoelectric Conversion Material

Magnetic Field Generator

Dielectric Ceramic Composition

Rare Earth Alloys

Corrosion-Resistant Magnet Powder

Microwave Dielectric Materials

Brazing Materials

Powder Compacting Apparatus

Sintering Processes

Magnetic Sensors

Ferrite Material Powder

240 patents: Sort by Forward Citations

1. 7270714 - Surface treating apparatus (2007-09-18),

2. 7025837 - Permanent magnets and R-TM-B based permanent magnets (2006-04-11),

3. 7002071 - Thermoelectric conversion material and method of producing the same (2006-02-21),

4. 6878210 - Surface-treating holder having tubular structure and method using the same (2005-04-12),

5. 6821357 - Permanent magnets and R-TM-B based permanent magnets (2004-11-23),

6. 6794973 - Magnetic field generating device for MRI (2004-09-21),

7. 6777362 - Microwave dielectric ceramic composition (2004-08-17),

8. 6764607 - Corrosion-resistant R-Fe-B bonded magnet powder for forming R-Fe-B bonded magnet and method for preparation thereof (2004-07-20),

9. 6761306 - Phosphorus-copper brazing material, brazing sheet, methods of manufacturing the material and the sheet, and flow path structure for heat exchangers (2004-07-13),

10. 6758986 - Magnet powder and method for preparations thereof (2004-07-06),

11. 6756010 - Method and apparatus for producing compact of rare earth alloy powder and rare earth magnet (2004-06-29),

12. 6755883 - Punch, powder pressing apparatus and powder pressing method (2004-06-29),

13. 6752879 - Rare earth magnet and method for manufacturing the same (2004-06-22),

14. 6743394 - Case for use in sintering process to produce rare-earth magnet, and method for producing rare-earth magnet (2004-06-01),

15. 6743082 - Blasting apparatus (2004-06-01),

Sumitomo Special Metals Co., Ltd. is a leading manufacturer and supplier of high-performance alloys, stainless steels, and titanium products. With a history dating back over 400 years, our company is committed to delivering innovative solutions that meet the evolving needs of various industries, including aerospace, automotive, electronics, and energy. Our extensive range of products includes nickel-based alloys, cobalt-based alloys, heat-resistant alloys, and more. At Sumitomo Special Metals, we strive for excellence in quality, reliability, and customer satisfaction.

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

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USPTO Data Jan 1 1976 - Dec 30 2025

240 Patents

#3 in Osakashi

#600 in Japan

#3,469 in the World

Osakashi, Japan

Sumitomo Special Metals Co., Ltd.

Forward Citations = 2,663

232 inventors:

Setsuo Fujimura (26 out of 27 patents)

Yutaka Matsuura (25 out of 30 patents)

Masato Sagawa (22 out of 63 patents)

4. Toshiaki Wada (21 out of 27 patents)

5. Fumiaki Kikui (19 out of 37 patents)

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