Location History:
- Ichihara, JP (1993)
- Chiba, JP (2000 - 2001)
- Tokyo, JP (1993 - 2004)
Company Filing History:
10 out of 2,636 
4 out of 5,290 
1 out of 2,043 
Years Active: 1993-2004
Title: Innovations of Jun Yamakawa
Introduction
Jun Yamakawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical technology, holding a total of 11 patents. His work focuses on the production of ferrules used in optical fiber applications, showcasing his expertise in this specialized area.
Latest Patents
Yamakawa's latest patents include a method of producing a ferrule and a manufacturing apparatus for producing a multi-fiber optical ferrule. The method involves creating a ferrule with multiple fiber holes for the insertion of optical fibers, formed between two pin holes for guide pins. This innovative process includes injecting synthetic resin into a mold while holding pins with a specific Young's modulus to form the fiber holes accurately. The manufacturing apparatus is designed to ensure that the spacer used has a hardness equivalent to or greater than that of the pins, with corner portions formed as inclined or rounded surfaces to enhance functionality.
Career Highlights
Throughout his career, Jun Yamakawa has worked with notable companies such as Furukawa Electric Co., Ltd. and Nippon Telegraph and Telephone Corporation. His experience in these organizations has allowed him to develop and refine his inventions, contributing to advancements in optical technology.
Collaborations
Yamakawa has collaborated with several talented individuals in his field, including Shinji Nagasawa and Naoko Shimoji. Their combined expertise has fostered innovation and progress in the development of optical technologies.
Conclusion
Jun Yamakawa's contributions to the field of optical technology through his patents and collaborations highlight his role as a leading inventor. His innovative methods and apparatuses continue to influence the industry and pave the way for future advancements.