Yoshikazu Murakami

This inventor holds 41 USPTO granted patents and 3 published patent applications, plus 2 CIPO patents and 10 EPO patents, primarily in Polymer Technology. Top assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd., Sony Corporation, Kyoto University. Active years: 1979-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshikazu Murakami. Retrieved from https://idiyas.com/inventor/yoshikazu-murakami

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

USPTO Granted Patents = 41 (Patent Applications = 3)

% Patents Active = 97.6

CIPO Patents = 2

EPO Patents = 10 (Patent Applications = 7)

Average Co-Inventor Count = 3.8

ph-index = 9

Forward Citations = 261(Granted Patents)

Location History:

Yokohama, JP (1984 - 1992)
Kanagawa, JP (1986 - 1996)
Chuo-ku, JP (2011 - 2014)
Tokyo, JP (1979 - 2023)

Company Filing History:

22 out of 265

Dainichiseika Color & Chemicals Mfg. Co., Ltd.

Advanced Elastomer Systems, L.p.

patents

where one patent can have more than one assignee

Years Active: 1979-2026

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Areas of Expertise:

Polymeric Dispersant

Aqueous Pigment Dispersion

Block Copolymer

Inkjet Ink

Pigment Dispersion Liquid

Radical Polymerization

Emulsion Binder

Thermoplastic Elastomer

Ferromagnetic Resonator

Thin Film

Microwave Apparatus

Phase Detectors

41 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12637531 - Pigment dispersant composition, production method therefor, pigment dispersion, and actinic-ray-curable ink-jet ink (2026-05-26),

2. 12559639 - Polymeric dispersant and production method therefor, aqueous pigment dispersion, and water-based ink-jet ink (2026-02-24),

3. 12237097 - Carbon material dispersion (2025-02-25),

4. 12173105 - A-B block copolymer, polymer emulsion and water-based inkjet ink (2024-12-24),

5. 12146045 - Carbon material dispersion (2024-11-19),

6. 11746247 - Aqueous pigment dispersion liquid (2023-09-05),

7. 11746178 - Polymer production method and radical polymerization initiating group-containing compound (2023-09-05),

8. 10995159 - Production method for polymer (2021-05-04),

9. 10982033 - Polymer production method and radical polymerization initiating group-containing compound (2021-04-20),

10. 10982020 - A-B block co-polymer, A-B block co-polymer production method, resin treatment pigment composition, resin treatment pigment composition production method, pigment dispersion, and pigment dispersion solution (2021-04-20),

11. 9988480 - Pigment dispersant, production method for pigment dispersant, and pigment dispersion liquid (2018-06-05),

12. 9732176 - Pigment dispersant, production method for pigment dispersant, and pigment dispersion liquid (2017-08-15),

13. 9644106 - Aqueous emulsion solution, coloring agent composition containing said aqueous solution, aqueous inkjet ink, and method for producing aqueous emulsion solution (2017-05-09),

14. 9512321 - Alkoxysilyl group-containing block copolymer, method for producing the same, resin-treated pigment, and pigment dispersion (2016-12-06),

15. 9260589 - Aqueous pigment dispersion liquid and aqueous pigment inkjet ink using same (2016-02-16),

Title: The Innovative Contributions of Yoshikazu Murakami

Introduction: Yoshikazu Murakami, based in Tokyo, Japan, is a prominent inventor with a remarkable portfolio of 39 patents. His innovative work has greatly influenced the fields of materials science and chemical engineering, particularly through the development of advanced carbon material dispersions and polymeric emulsions.

Latest Patents: Among his latest inventions is a carbon material dispersion that allows high concentrations of carbon material to be stably dispersed in a liquid medium containing organic solvents. This innovation is particularly useful for creating inks capable of forming films with excellent electric conductivity. The composition involves a polymeric dispersant, which plays a crucial role in preventing reaggregation of the carbon material.

Another notable patent involves an A-B block copolymer that enhances the preparation of a polymer emulsion used as a binder component in aqueous inkjet inks. This invention boasts excellent printability and achieves durable printed films on various substrates, including polyolefin-based plastic films. Such advancements underscore Murakami’s commitment to pushing the boundaries of material applications.

Career Highlights: Yoshikazu Murakami has made significant strides in his career, having worked for reputable companies like Dainichiseika Color & Chemicals Manufacturing Co., Ltd. and Sony Corporation. His experience in these companies has allowed him to hone his skills and contribute to groundbreaking innovations.

Collaborations: Throughout his career, Murakami has collaborated with notable individuals such as Hiroyuki Shimanaka and Seigo Ito. These collaborations have likely enriched his inventive processes and led to the development of successful patent applications.

Conclusion: Yoshikazu Murakami stands out as a key figure in the realm of materials innovation. His 39 patents reflect a dedication to enhancing material properties and functionalities, benefiting various industries. As he continues to push the envelope of what is possible, Murakami's contributions will undoubtedly leave a lasting impact on technological advancements.

Profile summary based on public USPTO records.