Average Co-Inventor Count = 3.1

ph-index = 8

Forward Citations = 178(Granted Patents)

Location History:

Fukushima, JP (1994)
Iwaki, JP (1987 - 2000)
Fukushima-ken, JP (2002 - 2013)

Company Filing History:

13 out of 776

Kureha Kagaku Kogyo Kabushiki Kaisha

patents

4 out of 137

Kureha Kagaku Kogyo K.k.

Polyplastics Co., Ltd.

patents

5. 1 out of 1

Kureha Kabaku Kogyo K.k.

patent

where one patent can have more than one assignee

Years Active: 1987-2013

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21 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 8574770 - Vinylidene fluoride copolymer-based polymer electrolyte for nonaqueous battery retaining large proportion of electrolytic solution (2013-11-05),

2. 8043386 - Process for producing polymer electrolyte (2011-10-25),

3. 7452387 - Process for producing a polymer electrolyte of a vinylidene fluoride copolymer for a nonaqueous battery (2008-11-18),

4. 6824927 - Polymer electrolyte containing a vinylidene fluoride copolymer and a nonaqueous electrolytic solution, and nonaqueous battery containing the polymer electrolyte (2004-11-30),

5. 6372388 - Vinylidene fluoride copolymer for gel-form solid electrolyte formation, solid electrolyte, and battery (2002-04-16),

6. 6054503 - Plastic lens material and process for preparing the same (2000-04-25),

7. 5554723 - Process for production of poly(arylene thioether) containing phthalic (1996-09-10),

8. 5380819 - Resin composition including poly(arylene thioether) and polyamide (1995-01-10),

9. 5380783 - Poly(arylene sulfide) resin composition (1995-01-10),

10. 5342654 - Surface roughening of resin molded articles for metallizing (1994-08-30),

11. 5326593 - Surface roughening of resin molded articles for metallizing (1994-07-05),

12. 5187257 - Thermoformed polyarylene sulfide container (1993-02-16),

13. 5085819 - Heat-resistant resin compositions, and heat-resistant molded or formed (1992-02-04),

14. 4935473 - Polyphenylene sulfide composition and method of producing the same (1990-06-19),

15. 4895893 - Heat-resistant resin compositions, and heat-resistant molded or formed (1990-01-23),

Introduction

Yukio Ichikawa is a prominent inventor based in Iwaki, Japan, known for his significant contributions to the field of polymer electrolyte technologies. With a total of 21 patents to his name, Ichikawa has pushed the boundaries of innovation, particularly in non-aqueous battery systems.

Latest Patents

Among his latest inventions is a dual patent focused on a vinylidene fluoride copolymer-based polymer electrolyte designed for non-aqueous batteries. This invention highlights a unique combination of a positive electrode material and a negative electrode material capable of lithium intercalation, with a polymer electrolyte strategically positioned between them. The polymer electrolyte is created by mixing a vinylidene fluoride copolymer with a non-aqueous electrolytic solution and solvent, followed by evaporating the solvent. This process retains a large proportion of the electrolytic solution, resulting in exceptional electroconductivity and mechanical strength. The composition of this copolymer is defined by 80 to 97 wt. % of vinylidene fluoride monomer units and 3 to 20 wt. % of at least one complementary monomer. The copolymer exhibits an inherent viscosity of 1.7 to 7 dl/g, measured in a specific solution at 30°C.

Career Highlights

Ichikawa has considerably impacted the industry through his work at Kureha Chemical Industry Co., Ltd. His extensive experience in the field of polymers has been instrumental in the development of cutting-edge battery technologies. His innovative approaches have contributed to improvements in battery performance, safety, and longevity.

Collaborations

Throughout his career, Yukio Ichikawa has collaborated with notable colleagues, including Takayuki Katto and Takumi Katsurao. Their joint efforts have enriched the research and development landscape, leading to groundbreaking advances in polymer electrolyte technologies that are shaping the future of energy storage systems.

Conclusion

Yukio Ichikawa stands as a pivotal figure in the advancements of non-aqueous battery technology through his impressive portfolio of patents. His innovative work on polymer electrolytes not only enhances electroconductivity but also boosts the mechanical properties necessary for efficient battery performance. His contributions continue to inspire future developments in the energy sector.

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