Company Filing History:

14 out of 7,952

Tdk Corporation

Years Active: 2003-2014

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15 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8785047 - Lithium-ion secondary battery and method of charging lithium-ion secondary battery (2014-07-22),

2. 8257865 - Electrode active material, electrode, lithium-ion secondary battery, method of making electrode active material, and method of making lithium-ion secondary battery (2012-09-04),

3. 8142927 - Lithium secondary battery (2012-03-27),

4. 8114543 - Lithium ion secondary battery (2012-02-14),

5. 7709155 - Nonaqueous electrolytic solution and lithium-ion secondary battery (2010-05-04),

6. 7651818 - Lithium ion secondary battery and charging method therefor (2010-01-26),

7. 7651815 - Lithium secondary battery (2010-01-26),

8. 7615084 - Secondary battery, and its production process (2009-11-10),

9. 7583058 - Method of charging lithium ion secondary battery including a constant current, charging apparatus, and power supply apparatus (2009-09-01),

10. 7413829 - Lithium secondary battery (2008-08-19),

11. 7195844 - Lithium secondary battery (2007-03-27),

12. 7189478 - Lithium secondary battery (2007-03-13),

13. 6839435 - Ranking display method for game machine (2005-01-04),

14. 6653018 - Electrochemical device (2003-11-25),

15. 6534219 - Secondary battery (2003-03-18),

Title: Tsuyoshi Iijima: Innovator in Lithium-Ion Battery Technology

Introduction

Tsuyoshi Iijima is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the field of lithium-ion battery technology. With a total of 15 patents to his name, Iijima has made remarkable advancements that have impacted energy storage solutions globally.

Latest Patents

One of Iijima's latest patents focuses on a lithium-ion secondary battery and its charging method. This innovative battery device includes a positive electrode collector with a surface formed with a positive electrode active material layer, a negative electrode collector with a negative electrode active material layer, an electrically insulating porous separator, and an electrolyte containing a lithium salt. The negative electrode active material is a carbon material with a graphite structure, specifically designed to enhance battery performance. The composition of the positive electrode active material includes lithium, manganese, nickel, cobalt, and oxygen atoms, which contribute to the battery's stability and efficiency at high temperatures.

Career Highlights

Throughout his career, Tsuyoshi Iijima has worked with notable companies such as TDK Corporation and Namco Limited. His experience in these organizations has allowed him to refine his expertise in battery technology and contribute to groundbreaking innovations.

Collaborations

Iijima has collaborated with esteemed colleagues, including Satoshi Maruyama and Kazuya Ogawa, to further advance the field of lithium-ion batteries. Their combined efforts have led to significant developments in battery efficiency and safety.

Conclusion

Tsuyoshi Iijima's work in lithium-ion battery technology exemplifies the impact of innovative thinking in the energy sector. His patents and collaborations continue to shape the future of energy storage solutions.

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Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.