Location History:
- Hachioji, JP (1995 - 1997)
- Hino, JP (1997 - 1999)
- Yamaguchi, JP (2004)
- Iwakuni, JP (2005)
Company Filing History:
7 out of 1,586 
1 out of 12,157 
1 out of 832,680 Years Active: 1995-2005
Title: The Innovative Contributions of Takeshi Sasaki
Introduction
Takeshi Sasaki is a prominent inventor based in Hachioji, Japan. He has made significant contributions to the field of optical materials, holding a total of 8 patents. His work focuses on developing advanced polymers that enhance optical performance.
Latest Patents
One of his latest patents involves an optical film that is a single polymer film with a smaller phase difference as the wavelength becomes shorter. This film is made from an olefin-based polymer containing an alicyclic group in the side chain, such as hydrogenated polystyrene. The composition of the alicyclic group in the side chain ranges from 60 to 90 wt % based on the entire polymer. It satisfies the expression: (450)/(550) < 1, where R(450) and R(550) represent phase differences on the film plane at wavelengths of 450 nm and 550 nm, respectively. Another notable patent is for a hydrogenated styrene polymer that boasts excellent transparency and is suitable for optical applications like optical disk substrates. This polymer maintains stability and transparency in hot and humid environments and exhibits excellent heat resistance. The production process includes filtering the hydrogenated styrene polymer with a filter having a pore size of 0.3 µm or less, ensuring high quality and performance.
Career Highlights
Throughout his career, Takeshi Sasaki has worked with notable companies such as Teijin Limited and Bayer Aktiengesellschaft. His experience in these organizations has contributed to his expertise in polymer technology and optical materials.
Collaborations
Takeshi has collaborated with several professionals in his field, including Kaoru Iwata and Utami Yonemura. These collaborations have further enriched his work and innovations.
Conclusion
Takeshi Sasaki's contributions to the field of optical materials and polymers are noteworthy. His innovative patents and collaborations reflect his commitment to advancing technology in this area. His work continues to influence the development of high-performance optical 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.