Location History:
- Kanagawa-ken, JP (1999 - 2006)
- Hiratsuka, JP (1997 - 2011)
- Kanagawa, JP (2003 - 2015)
Company Filing History:
15 out of 2,245 
1 out of 6 Years Active: 1997-2015
Title: The Innovative Genius of Shojiro Kuwahara
Introduction
Shojiro Kuwahara, based in Kanagawa, Japan, is a renowned inventor recognized for his significant contributions in the field of material science. With 16 patents to his name, Kuwahara has developed advanced materials and processes that have broad applications in optics and film production.
Latest Patents
Among his latest inventions is a novel thermoplastic transparent resin. This resin is produced by hydrogenating 70% or more of aromatic double bonds of a copolymer, which is synthesized using a specific monomer composition. The copolymer combines at least one (meth)acrylic ester monomer and one aromatic vinyl monomer in a defined molar ratio. This innovative resin is particularly suitable for molding optical articles, offering excellent color tone and reduced defects in production.
Another notable patent by Kuwahara is for a polyester film derived from a unique blend of dicarboxylic acid and diol units. His process involves melt-extruding polyester, where 1 to 80 mol% of the diol unit contains a cyclic acetal skeleton. This resulting optically isotropic polyester film, produced through extrusion-molding, exhibits an in-plane retardation of 20 nm or less at a wavelength of 550 nm. Its economical production method and versatile applications make it ideal for optical products such as phase difference films and anti-reflection films.
Career Highlights
Kuwahara's career includes significant roles at prominent companies such as Mitsubishi Gas Chemical Company, Inc. and Mitsubishi Gas Chemical, Inc. His work in these organizations has been pivotal in pushing the boundaries of polymer chemistry and optical materials.
Collaborations
Throughout his career, Kuwahara has had the pleasure of collaborating with talented colleagues like Takeshi Hirokane and Masahiro Kurokawa. Their teamwork has fostered a creative environment that has led to groundbreaking advancements in their respective fields.
Conclusion
Shojiro Kuwahara's innovative spirit and dedication to his craft have earned him a well-deserved reputation as a leading inventor in material science. With his impressive portfolio of patents and collaborations, he continues to contribute to the evolution of technology, paving the way for future advancements in optical materials and applications.
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.