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For the Inventor, By the Inventor

Tokyo, Japan

Hitachi Chemical Company, Ltd.


USPTO Granted Patents = 1,641



Trademarks = 13

Forward Citations = 12,219

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2,005 inventors (with patents filed for the assignee):

goldMedal Seiji Tai (39 out of 41 patents)

silverMedal Itsuo Watanabe (38 out of 38 patents)

bronzeMedal Yasuo Miyadera (38 out of 40 patents)

4.  Nobuyuki Hayashi (36 out of 42 patents)

5.  Yasushi Kurata (35 out of 35 patents)

6.  Masato Yoshida (34 out of 34 patents)

7.  Masato Mitsuhashi (33 out of 39 patents)

8.  Yoshii Morishita (33 out of 36 patents)

9.  Masami Yusa (33 out of 35 patents)

10.  Makoto Kaji (29 out of 34 patents)

11.  Hikari Murai (27 out of 36 patents)

12.  Akira Nagai (26 out of 96 patents)

13.  Akishi Nakaso (26 out of 27 patents)

14.  Shigeru Hayashida (26 out of 29 patents)

15.  Atsushi Takahashi (25 out of 33 patents)


Core Competencies:
Lead Acid Storage Batteries
Lithium Ion Secondary Battery
Organic Electronic Material
Polishing Liquid
Thermal Insulation Material
Semiconductor Device
Photosensitive Film
Friction Material Composition
Copper Paste
Aerogel
Resin Composition
Carbon Nanotubes

1,641 patents:

1. 11349175 - Separator for lead acid storage batteries, and lead acid storage battery (2022-05-31),
2. 11137043 - Friction material composition, and friction material and friction member using the same (2021-10-05),
3. 10960633 - Method for forming molded article by press molding (2021-03-30),
4. 10854871 - Anode material for lithium ion secondary battery, anode for lithium ion secondary battery, and lithium ion secondary battery (2020-12-01),
5. 10840452 - Organic electronic material including charge transport polymer or oligomer having structural unit containing aromatic amine structure substituted with fluorine atom, organic electronic element, and organic electroluminescent element (2020-11-17),
6. 10840451 - Organic electronic material, ink composition containing same, and organic thin film, organic electronic element, organic eletroluminescent element, lighting device, and display device formed therewith (2020-11-17),
7. 10825694 - Method for manufacturing electronic component, resin composition for temporary protection, and resin film for temporary protection (2020-11-03),
8. 10825687 - Slurry, polishing liquid set, polishing liquid, method for polishing substrate, and substrate (2020-11-03),
9. 10821705 - Aerogel laminated composite and thermal insulation material (2020-11-03),
10. 10808150 - Resin composition, method for manufacturing semiconductor device using resin composition, and solid-state imaging element (2020-10-20),
11. 10807830 - Winding core and roll (2020-10-20),
12. 10800872 - Epoxy resin, epoxy resin composition, epoxy resin cured product, and composite material (2020-10-13),
13. 10796921 - CMP fluid and method for polishing palladium (2020-10-06),
14. 10795469 - Laminate containing conductive fiber, photosensitive conductive film, method for producing conductive pattern, conductive pattern substrate, and touch panel (2020-10-06),
15. 10774194 - Method of separating inorganic material, method of producing reprocessed material and method of removing organic substance (2020-09-15),
HITACHI CHEMICAL COMPANY, LTD. is a leading global manufacturer of materials, components, and systems used in various industries. With a wide range of products and solutions, Hitachi Chemical serves customers in the automotive, electronic, energy, healthcare, and other sectors. Their innovative technologies and commitment to sustainability make them a trusted partner for businesses around the world.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

1,641 Patents

#67 in Tokyo

#138 in Japan

#595 in the World

...
Tokyo, Japan

Hitachi Chemical Company, Ltd.

Forward Citations = 12,219

2,005 inventors:

goldMedal Seiji Tai (39 out of 41 patents)

silverMedal Itsuo Watanabe (38 out of 38 patents)

bronzeMedal Yasuo Miyadera (38 out of 40 patents)

4.  Nobuyuki Hayashi (36 out of 42 patents)

5.  Yasushi Kurata (35 out of 35 patents)

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