Location History:
- Osaka, JP (2005)
- Tokyo, JP (2011)
Company Filing History:
2 out of 1,156 
1 out of 45 
Years Active: 2005-2011
Title: Shuhei Nagakubo: Innovator in Battery Technology
Introduction
Shuhei Nagakubo is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of battery technology, particularly in the development of separators for lead-acid batteries. With a total of 2 patents, his innovations have the potential to enhance the performance and longevity of these essential energy storage devices.
Latest Patents
Nagakubo's latest patents include a separator for lead-acid batteries and a separator for valve regulated lead acid batteries. The separator for lead-acid batteries is designed to ensure that the battery maintains a predetermined capacity after initial charging and extends its service life. This is achieved by limiting the maximum quantity of reducing substances produced from the separator. The separator comprises a porous membrane made mainly from polyolefin resin, inorganic powder, and mineral oil, along with a surface-active agent as an auxiliary material. The separator is characterized by a specific amount of reducing substance liberated after electrolysis, ensuring optimal performance.
The separator for valve regulated lead acid batteries is composed mainly of fine glass fibers, along with inorganic powder, beaten natural pulp, and heat-weldable organic fibers. The heat-weldable organic fibers have a fineness of 1.5 deniers or less and a fiber length of 1 mm or more. The amount of these fibers ranges from 3% to 15% by weight, and this separator is employed in valve regulated lead acid batteries to improve their efficiency and reliability.
Career Highlights
Throughout his career, Nagakubo has worked with notable companies such as Nippon Sheet Glass Company, Limited and GS Yuasa Corporation. His experience in these organizations has contributed to his expertise in battery technology and innovation.
Collaborations
Nagakubo has collaborated with esteemed colleagues, including Shoji Sugiyama and Atsushi Asada. These partnerships have fostered a collaborative environment that encourages innovation and the advancement of battery technology.
Conclusion
Shuhei Nagakubo's contributions to battery technology through his innovative patents demonstrate his commitment to enhancing energy storage solutions. His work continues to influence the industry and pave the way for future advancements in battery performance and longevity.
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.