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Sankyo Kasei Co., Ltd.

USPTO Granted Patents = 8

EPO Patents = 5

Forward Citations = 68

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21 inventors (with patents filed for the assignee):

Norio Yoshizawa (3 out of 4 patents)

Tetsuo Yumoto (3 out of 3 patents)

Kannosuke Maeda (3 out of 3 patents)

4. Tatsuo Matsuda (2 out of 11 patents)

5. Kenichi Urushibata (2 out of 7 patents)

6. Kiyoto Sugawara (2 out of 4 patents)

7. Haruo Saen (2 out of 14 patents)

8. Yoshio Aoyama (2 out of 2 patents)

9. Tooru Kanno (2 out of 2 patents)

10. Keiichi Kojima (2 out of 13 patents)

11. Hiroaki Watanabe (1 out of 31 patents)

12. Kazuo Takimiya (1 out of 19 patents)

13. Itaru Osaka (1 out of 4 patents)

14. Kazuaki Kawashima (1 out of 1 patent)

15. Toshio Aoyama (1 out of 1 patent)

8 patents: Sort by Forward Citations

1. 9209409 - Naphthobisthiadiazole derivative (2015-12-08),

2. 8528202 - Method for manufacturing a three dimensional circuit board (2013-09-10),

3. 7452217 - Connecting member for surface mounting circuit (2008-11-18),

4. 5173088 - Process for preparing crystals of anhydrous sodium sulfide (1992-12-22),

5. 5071632 - Process for preparing crystals of anhydrous sodium sulfide (1991-12-10),

6. 5057650 - Molded circuit component unit for connecting lead wires (1991-10-15),

7. 5045641 - Moulded electrical connector and method for manufacturing same (1991-09-03),

8. 4908043 - Method of producing crystals of anhydrous sodium sulfide (1990-03-13),

Sankyo Kasei Co., Ltd. is a leading manufacturer of specialty chemicals with a focus on providing high-quality products for various industries such as healthcare, cosmetics, and electronics. With over 70 years of experience, the company is known for its innovative solutions and commitment to sustainability. Sankyo Kasei Co., Ltd. continuously strives to exceed customer expectations and create value through its advanced technologies and dedicated team of professionals.

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

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USPTO Data Jan 1 1976 - Dec 2 2025

8 Patents

#469 in Osaka

#4,914 in Japan

Sankyo Kasei Co., Ltd.

Forward Citations = 68

21 inventors:

Norio Yoshizawa (3 out of 4 patents)

Tetsuo Yumoto (3 out of 3 patents)

Kannosuke Maeda (3 out of 3 patents)

4. Tatsuo Matsuda (2 out of 11 patents)

5. Kenichi Urushibata (2 out of 7 patents)

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