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For the Inventor, By the Inventor

Tokyo, Japan

Asahi Kasei E-Materials Corporation


USPTO Granted Patents = 86

% Expired Patents = 30.2



Trademarks = 8

Forward Citations = 200

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140 inventors (with patents filed for the assignee):

goldMedal Hiroshi Murata (7 out of 67 patents)

silverMedal Keitaro Ameyama (7 out of 8 patents)

bronzeMedal Tadashi Ino (6 out of 22 patents)

4.  Jun Koike (6 out of 17 patents)

5.  Naoto Miyake (6 out of 16 patents)

6.  Masahiro Kondo (6 out of 28 patents)

7.  Hiroaki Takanohashi (5 out of 9 patents)

8.  Masahiro Ohashi (5 out of 7 patents)

9.  Yuzuru Sakakibara (5 out of 6 patents)

10.  Masaki Ishikawa (5 out of 25 patents)

11.  Fujito Yamaguchi (5 out of 10 patents)

12.  Yuki Uchida (4 out of 19 patents)

13.  Naoki Sakamoto (4 out of 18 patents)

14.  Yoshimichi Mitamura (4 out of 8 patents)

15.  Hiroshi Hatayama (4 out of 13 patents)


Core Competencies:
Electricity Storage
Separator
Porous Membrane
Polyolefin
Redox Flow Battery
Nonaqueous Electrolyte
Battery Technology
Microporous Film
Lithium Ion
Layered Product
Coating Composition
Semiconductor

86 patents:

1. 10811659 - Separator for electricity storage device, laminate and porous film (2020-10-20),
2. 10766169 - Resin mold (2020-09-08),
3. 10693114 - Polyolefin-based porous film and method for producing the same (2020-06-23),
4. 10680223 - Laminated separator, polyolefin microporous membrane, and separator for electricity storage device (2020-06-09),
5. 10578962 - Self-supporting film, self-supporting structure, method for manufacturing self-supporting film, and pellicle (2020-03-03),
6. 10276849 - Separator including polyolefin microporous membrane and inorganic porous layer, and nonaqueous electrolyte battery using the same (2019-04-30),
7. 10246567 - Polyolefin microporous film (2019-04-02),
8. 10211474 - Redox flow secondary battery and electrolyte membrane for redox flow secondary battery (2019-02-19),
9. 10189781 - Onium salt and composition comprising the same (2019-01-29),
10. 10153473 - Separator for electricity storage device, laminate and porous film (2018-12-11),
11. 9991488 - Polyolefin-based porous film and method for producing the same (2018-06-05),
12. 9966583 - Laminated polyolefin microporous membrane including propylene copolymer and method of producing the same (2018-05-08),
13. 9941498 - Polyolefin-based porous film and method for producing the same (2018-04-10),
14. 9911960 - Porous membrane and multilayer porous membrane (2018-03-06),
15. 9911959 - Porous membrane and multilayer porous membrane (2018-03-06),
Asahi Kasei E-materials Corporation is a leading provider of high-performance plastic compounds and specialty polymers. With decades of experience and expertise, they offer a wide range of materials that cater to various industries such as automotive, electronics, healthcare, and more. Their commitment to innovation and sustainability has made them a trusted partner for businesses worldwide.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Asahi Kasei E-Materials Corporation
86 Patents

#600 in Tokyo

#1,240 in Japan

#8,853 in the World

Tokyo, JP
Tokyo, Japan

Asahi Kasei E-Materials Corporation

Forward Citations = 200

140 inventors:

goldMedal Hiroshi Murata (7 out of 67 patents)

silverMedal Keitaro Ameyama (7 out of 8 patents)

bronzeMedal Tadashi Ino (6 out of 22 patents)

4.  Jun Koike (6 out of 17 patents)

5.  Naoto Miyake (6 out of 16 patents)

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