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For the Inventor, By the Inventor

Tokyo, Japan

Du Pont-Mitsui Polychemicals Co., Ltd.


USPTO Granted Patents = 43



Forward Citations = 309

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53 inventors (with patents filed for the assignee):

goldMedal Masanobu Sato (6 out of 47 patents)

silverMedal Koichi Nishijima (6 out of 8 patents)

bronzeMedal Kazuyuki Oogi (4 out of 6 patents)

4.  Eisaku Hirasawa (4 out of 5 patents)

5.  Manabu Kawamoto (3 out of 11 patents)

6.  Shigenori Nakano (3 out of 3 patents)

7.  Kaoru Suzuki (3 out of 3 patents)

8.  Sadaki Yamamoto (3 out of 5 patents)

9.  Masataka Aoyama (3 out of 3 patents)

10.  Kenji Miharu (3 out of 3 patents)

11.  Toshiyuki Ishii (3 out of 25 patents)

12.  Toru Fukada (3 out of 3 patents)

13.  Seiichi Tada (3 out of 4 patents)

14.  Yoshikazu Kutsuwa (3 out of 3 patents)

15.  Akira Yamashita (2 out of 6 patents)


Core Competencies:
Resin Composition
Polymer Composition
Solar Cell Encapsulant
Ethylene Copolymer
Flame Retardant Resin
Graft Copolymer
Thermoplastic Resin
Pressure-Sensitive Adhesive
Lactic Acid-Based Resin
Synthetic Resin Hollow Body
Semiconducting Compositions
Molding for Automobile Windows

43 patents:

1. 9353230 - Resin pellet and method for producing the same (2016-05-31),
2. 9120920 - Polymer composition (2015-09-01),
3. 8969468 - Methacrylic resin composition and molded article (2015-03-03),
4. 8957304 - Sheet for solar cell encapsulant and solar cell module (2015-02-17),
5. 8921488 - Resin composition for extrusion coating, and layered film and method for producing the same (2014-12-30),
6. 8791208 - Sheet for solar cell encapsulant and solar cell module (2014-07-29),
7. 8716405 - Resin composition, heat seal film and layered film (2014-05-06),
8. 8569437 - Encapsulating material for solar cell (2013-10-29),
9. 8551385 - Resin molding apparatus, resin molding method, and resin container (2013-10-08),
10. 8517197 - Synthetic resin hollow body (2013-08-27),
11. 8513357 - Ethylene copolymer composition, sheet for sealing a solar cell element, and solar cell module (2013-08-20),
12. 8497321 - Tacky resin composition and pressure-sensitive adhesive film or sheet (2013-07-30),
13. 8426544 - Encapsulating material for solar cell (2013-04-23),
14. 8350147 - Process for producing encapsulating material for solar cell (2013-01-08),
15. 8053086 - Encapsulating material for solar cell (2011-11-08),
Du Pont-Mitsui Polychemicals Co., Ltd. is a joint venture between DuPont and Mitsui Chemicals. They specialize in the development, production, and sales of high-performance polymers and elastomers. With a focus on innovative solutions, they cater to various industries including automotive, electrical and electronics, healthcare, and consumer goods. Through their advanced technologies and global network, they aim to contribute to a sustainable future by providing high-quality materials for diverse applications.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

43 Patents

#768 in Tokyo

#1,844 in Japan

#15,578 in the World

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Tokyo, Japan

Du Pont-Mitsui Polychemicals Co., Ltd.

Forward Citations = 309

53 inventors:

goldMedal Masanobu Sato (6 out of 47 patents)

silverMedal Koichi Nishijima (6 out of 8 patents)

bronzeMedal Kazuyuki Oogi (4 out of 6 patents)

4.  Eisaku Hirasawa (4 out of 5 patents)

5.  Manabu Kawamoto (3 out of 11 patents)

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