Average Co-Inventor Count = 4.1

ph-index = 12

Forward Citations = 329(Granted Patents)

Location History:

Ichihara, JP (1990)
boh of Iwakuni, JP (1990)
Iwakuni, JP (1988 - 1994)
Chiba, JP (1996)
Sodegaura, JP (1995 - 2001)

Company Filing History:

16 out of 1,008

Mitsui Petrochemical Industries, Ltd.

Mitsui Chemicals, Inc.

patents

4. 2 out of 10

Mitsui Pharmaceuticals, Inc.

where one patent can have more than one assignee

Years Active: 1988-2001

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20 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 6180800 - Fluorine-substituted cyclic carbonate and electrolytic solution and battery containing the same (2001-01-30),

2. 6010806 - Fluorine-substituted cyclic carbonate electrolytic solution and battery (2000-01-04),

3. 5977277 - Acrylic ester, novel allyl ether, novel allyl carbonate, acrylic ester (1999-11-02),

4. 5925283 - Ionically conductive polymeric gel electrolyte and solid battery (1999-07-20),

5. 5922888 - Process for removal of diol as impurity in cyclic carbonic acid ester (1999-07-13),

6. 5847188 - Carbonate compounds, non-aqueous electrolytic solutions and batteries (1998-12-08),

7. 5659062 - Non-aqueous electrolytic solutions and batteries comprising non-aqueous (1997-08-19),

8. 5633099 - Carbonate compounds, non-aqueous electrolytic solutions and batteries (1997-05-27),

9. 5580684 - Non-aqueous electrolytic solutions and non-aqueous electrolyte cells (1996-12-03),

10. 5561005 - Secondary battery having non-aqueous electrolyte (1996-10-01),

11. 5385794 - Cell electrolyte solvent, cell electrolyte comprising the solvent and (1995-01-31),

12. 5304555 - Pyrimidines and pharmaceutically acceptable salts thereof useful in (1994-04-19),

13. 5192799 - Coumaran group containing amine compounds and their acid addition salts (1993-03-09),

14. 5041660 - Novel alpha-chloroketone derivative and process for preparation thereof (1991-08-20),

15. 4966968 - Indan derivatives (1990-10-30),

Title: Keiichi Yokoyama: Innovator in Electrolytic Solutions and Battery Technologies

Introduction

Keiichi Yokoyama is a distinguished inventor based in Sodegaura, Japan. With a remarkable portfolio of 20 patents, he has made significant contributions to the field of battery technology and electrolytic solutions, particularly focusing on chemical compounds that enhance the efficiency and safety of batteries.

Latest Patents

Yokoyama's recent patents include the development of novel fluorine-substituted cyclic carbonates, specifically highlighting compounds such as monofluoromethyl ethylene carbonate, difluoromethyl ethylene carbonate, and trifluoromethyl ethylene carbonate. These compounds serve as highly effective solvents due to their chemical and physical stability, high dielectric constant, and ability to dissolve organic substances across a wide range of temperatures. The batteries utilizing these compounds exhibit outstanding charge and discharge cycle characteristics, high flash points, and overall safety as non-aqueous electrolytes, making them an innovative breakthrough in the industry.

Career Highlights

Throughout his career, Keiichi Yokoyama has worked with prestigious companies, including Mitsui Petrochemical Industries and Sony Corporation. His experience in these leading corporations has helped him to develop and refine his inventive concepts, propelling advancements in battery technology.

Collaborations

Yokoyama's journey in innovation has also been shaped by his collaborations with esteemed colleagues, such as Akio Hiwara and Shigeru Fujita. Their teamwork and collective expertise have contributed to the successful development of cutting-edge battery technologies.

Conclusion

In conclusion, Keiichi Yokoyama stands out as a pivotal figure in advancing electrolytic solutions and battery performance. His extensive patent portfolio and significant collaborations reflect his relentless pursuit of innovation in the field. As technology continues to evolve, Yokoyama's work will undoubtedly have a profound impact on the future of energy storage solutions.

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