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Tokyo, Japan

Kazuhiko Inoue

This inventor holds 85 USPTO granted patents and 21 published patent applications and 11 EPO patents, primarily in Lithium-Ion Batteries (CPC class H01M10-0525). Top assignees: Nec Corporation, Teac Corporation, Konica Minolta, Inc.. Active years: 1987-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuhiko Inoue. Retrieved from https://idiyas.com/inventor/kazuhiko-inoue

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 85 

% Patents Active = 89.4

 

Average Co-Inventor Count = 2.3

ph-index = 9

Forward Citations = 273(Granted Patents)

Forward Citations (Not Self Cited) = 267(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Hoya, JP (1993 - 1994)
  • Hohya, JP (1994)
  • Houya, JP (1992 - 1996)
  • Oume, JP (2001)
  • Suita, JP (2003 - 2004)
  • Shimane, JP (2016)
  • Minato-ku, JP (2012 - 2017)
  • Kita-ku, JP (2018)
  • Osaka, JP (2018)
  • Sakai, JP (2009 - 2022)
  • Tokyo, JP (1987 - 2024)

Company Filing History:

goldMedal31 out of 36,676 
 
Nec Corporation
 patents
silverMedal23 out of 1,030 
 
Teac Corporation
 patents
bronzeMedal12 out of 4,385 
 
Konica Minolta, Inc.
 patents
4. 8 out of 343 
 
Nippon Paper Industries Co., Ltd.
 patents
5. 4 out of 2,816 
 
Minolta Company, Ltd.
 patents
6. 3 out of 680 
 
Konica Minolta Opto, Inc.
 patents
7. 2 out of 8,247 
 
Tdk Corporation
 patents
8. 1 out of 3,673 
 
Kao Corporation
 patents
9. 1 out of 50 
 
Konica Minolta Advanced Layers, Inc.
 patents
10. 1 out of 26,974 
 
Telefonaktiebolaget Lm Ericsson (Publ)
 patents
where one patent can have more than one assignee

Years Active: 1987-2024

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Areas of Expertise:
Lithium-Ion Secondary Battery
Carboxymethylated Cellulose
Projection Optical System
Electrode Binder
Battery Manufacturing
Nanofibers
Film Packaged Battery
Resin Composition
Negative Electrode
Separator
Projection Lens
Image Projection Apparatus
85 patents (USPTO):Explore Patents
1. 12123109 - Carboxymethylated cellulose nanofibers (2024-10-22),
2. 12049522 - Powder containing carboxymethylated cellulose nanofibers (2024-07-30),
3. 12031016 - Dispersion composition containing carboxymethyl cellulose (2024-07-09),
4. 11837689 - Current collector including opening formation portion and battery using same (2023-12-05),
5. 11777147 - Lithium ion secondary battery (2023-10-03),
6. 11760811 - Carboxymethylated cellulose (2023-09-19),
7. 11732055 - Method for manufacturing carboxymethylated cellulose nanofiber (2023-08-22),
8. 11591412 - Carboxymethylated cellulose nanofibers (2023-02-28),
9. 11581566 - Secondary battery and method for manufacturing the same (2023-02-14),
10. 11518820 - Method for producing carboxymethylated cellulose and carboxymethylated cellulose nanofibers (2022-12-06),
11. 11469408 - Electrode and secondary battery (2022-10-11),
12. 11409191 - Projection optical system and projection apparatus (2022-08-09),
13. 11404694 - Resin composition (2022-08-02),
14. 11380963 - Secondary battery (2022-07-05),
15. 11378880 - Projection optical system and projection apparatus that enlarge and project an image displayed on a display (2022-07-05),

Title: Kazuhiko Inoue: Innovator in Carboxymethylated Cellulose Nanofibers

Introduction

Kazuhiko Inoue is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the field of materials science. With an impressive portfolio of 85 patents, he has made a notable impact through his innovative work on carboxymethylated cellulose nanofibers.

Latest Patents

Among his most recent patents are two groundbreaking innovations in nanofiber technology. Firstly, he developed carboxymethylated cellulose nanofibers where the degree of carboxymethyl substitution ranges from 0.30 to 0.60. These fibers exhibit a cellulose type I crystallinity of 60% or higher, along with a light transmittance of 60% or above when in an aqueous dispersion at a solids fraction of 1% (w/v) at a wavelength of 660 nm. Secondly, Inoue has patented a powder containing these advanced nanofibers, characterized by a degree of carboxymethyl substitution of 0.50 or less, a cellulose type I crystallinity of 60% or more, and a median diameter ranging from 10.0 μm to 150.0 μm. This powder shows great potential as a usable additive in various applications.

Career Highlights

Kazuhiko Inoue's career includes significant roles at well-known companies such as NEC Corporation and TEAC Corporation. His work at these organizations has enabled him to explore and refine his inventions, particularly in the area of cellulose-based materials.

Collaborations

Inoue has collaborated with esteemed colleagues such as Masatoshi Iji and Kenichi Shimura. These partnerships have fostered an environment of innovation, allowing for the exchange of ideas and the advancement of research in cellulose nanofiber technology.

Conclusion

Kazuhiko Inoue's contributions to the field of carboxymethylated cellulose nanofibers illustrate his status as a leading inventor in materials science. With 85 patents to his name and an ongoing commitment to innovation, he continues to drive advancements that could have broad applications across multiple industries. His collaborations and career achievements reflect a dedication to excellence and a vision for the future of material technology.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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