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Tanaka Kikinzoku Kogyo K.k.

USPTO Granted Patents = 370

CIPO Patents = 3

EPO Patents = 127

Forward Citations = 2,348

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561 inventors (with patents filed for the assignee):

Masayuki Saito (26 out of 54 patents)

Junichi Taniuchi (22 out of 25 patents)

Kazunori Tsurumi (22 out of 23 patents)

4. Masahiro Watanabe (20 out of 26 patents)

5. Ryosuke Harada (18 out of 19 patents)

6. Kunihiro Shima (18 out of 18 patents)

7. Koichi Matsutani (17 out of 18 patents)

8. Toshiyuki Shigetomi (16 out of 17 patents)

9. Koichi Sakairi (15 out of 15 patents)

10. Hitoshi Kubo (15 out of 16 patents)

11. Toshinori Ogashiwa (15 out of 16 patents)

12. Nagakazu Furuya (15 out of 20 patents)

13. Yasuyuki Goto (13 out of 14 patents)

14. Nobuyasu Ezawa (13 out of 14 patents)

15. Minoru Ishida (12 out of 91 patents)

Core Competencies:

Semiconductor Nanoparticles

High-Voltage Relay

Platinum Sputtering Target

Organic Electroluminescent Elements

Shape-Memory Alloy

Core-Shell Catalyst

Electroconductive Substrate

Solid Polymer Fuel Cell

Immunochromatographic Device

Gold Powder Production

Medical Alloy

Chemical Vapor Deposition

370 patents: Sort by Forward Citations

1. 12441938 - Semiconductor nanoparticles composed of AgAuS-based multicomponent compound (2025-10-14),

2. 12340956 - DC high-voltage relay, and contact material for DC high-voltage relay (2025-06-24),

3. 12325908 - Platinum-based sputtering target, and method for producing the same (2025-06-10),

4. 12245498 - Organoiridium complex for organic electroluminescent elements (2025-03-04),

5. 12230485 - Sputtering target for magnetic recording medium (2025-02-18),

6. 12163034 - Silver ink for low-temperature calcination (2024-12-10),

7. 12157170 - Conductive bonding material, bonding member including the conductive bonding material, and bonding method (2024-12-03),

8. 12152300 - Chemical vapor deposition method using an organomanganese compound as a starting material (2024-11-26),

9. 12104236 - Shape-memory alloy and shape-memory alloy wire (2024-10-01),

10. 12091748 - Method for forming ruthenium thin film (2024-09-17),

11. 12062796 - Core-shell catalyst for oxygen reduction reaction, and method of designing catalyst (2024-08-13),

12. 12054417 - Bushing for producing glass fibers and method for producing glass fibers (2024-08-06),

13. 12035470 - Electroconductive substrate having metal wiring, method for producing the electroconductive substrate, and metal ink for forming metal wiring (2024-07-09),

14. 12031196 - Metal powder (2024-07-09),

15. 12015161 - Catalyst for solid polymer fuel cell and method for selecting catalyst for solid polymer fuel cell (2024-06-18),

TANAKA KIKINZOKU KOGYO K.K. is a leading precious metals company based in Japan. With over 130 years of experience, the company specializes in the production and distribution of precious metals, including gold, silver, platinum, and palladium. TANAKA KIKINZOKU KOGYO K.K. serves various industries such as electronics, automotive, jewelry, and healthcare. The company is committed to providing high-quality products and innovative solutions to meet the evolving needs of its customers worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

370 Patents

#203 in Tokyo

#449 in Japan

#2,413 in the World

Tanaka Kikinzoku Kogyo K.k.

Forward Citations = 2,348

561 inventors:

Masayuki Saito (26 out of 54 patents)

Junichi Taniuchi (22 out of 25 patents)

Kazunori Tsurumi (22 out of 23 patents)

4. Masahiro Watanabe (20 out of 26 patents)

5. Ryosuke Harada (18 out of 19 patents)

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