Location History:
- Osaka, JP (1995)
- Kashiwara, JP (1999 - 2012)
Company Filing History:
3 out of 3 
3 out of 6 
1 out of 4 
Years Active: 1995-2012
Title: Innovations by Yoshihiro Koyanagi
Introduction
Yoshihiro Koyanagi is a notable inventor based in Kashiwara, Japan. He has made significant contributions to the field of fluid container technology and cushioning materials. With a total of nine patents to his name, Koyanagi's work reflects a commitment to innovation and practical solutions.
Latest Patents
Koyanagi's latest patents include a structure of fluid container and a method and apparatus for producing the fluid container. This fluid container is designed to pack products effectively, featuring a check valve for each container member. The bonding structure of the check valves ensures that the fluid container can maintain its expansion without any leakage after inflation. The check valve is bonded to one of the thermoplastic container films, with multiple seal portions preventing reverse flow and adding resistance to fluid flow. Another significant invention is an air-filling cushioning material that can sufficiently inflate cells while holding the crease of the fold when formed into a three-dimensional configuration. This innovative cushioning material is created by adhering overlapped flexible sheets at predetermined spots, allowing for effective inflation of the cells.
Career Highlights
Throughout his career, Koyanagi has worked with companies such as Kabushiki Kaisha Kashiwara Seitai and Kashiwara Seitai Co., Ltd. His experience in these organizations has contributed to his development as an inventor and innovator in his field.
Collaborations
Koyanagi has collaborated with notable individuals such as Mikio Tanaka and Osamu Nakagiri. These partnerships have likely enriched his work and led to further advancements in his inventions.
Conclusion
Yoshihiro Koyanagi's contributions to fluid container technology and cushioning materials demonstrate his innovative spirit and dedication to solving practical problems. His patents reflect a deep understanding of material science and engineering, making him a significant figure in the field of invention.