Location History:
- Yokohama, JP (2004)
- Hiroshima, JP (2006)
Company Filing History:
1 out of 47 
1 out of 1,710 
1 out of 832,680 Years Active: 2004-2006
Title: The Innovative Contributions of Takeshi Shiono
Introduction
Takeshi Shiono is a notable inventor based in Hiroshima, Japan. He has made significant contributions to the field of polymer chemistry, particularly in the development of new copolymers and processes for producing olefinic living polymers. With a total of 2 patents, his work has implications for various industrial applications.
Latest Patents
One of Shiono's latest patents is titled "Copolymer of propylene with a conjugated diene and a process of preparing the same." This invention introduces a new copolymer of propylene and a conjugated diene that features a carbon-carbon double bond in a side chain. The copolymer is characterized by a specific molar ratio of 1,2-adducts and 3,4-adducts to 1,4-adducts, which is 100:0. The preparation process involves copolymerizing propylene and the conjugated diene in the presence of hydrogen, an organometallic compound with a transition metal from group 4 of the periodic table, and at least one Lewis acid.
Another significant patent is the "Process for producing olefin living polymer." This process focuses on preparing olefinic living polymers with a molecular weight distribution (Mw/Mn) ranging from 1 to 1.3. It involves polymerizing an olefinic monomer with 2 to 20 carbon atoms at low temperatures using a catalyst that includes a hafnium or zirconium-containing compound, a triphenyl boron compound, and optionally a specific mono-, di-, or trialkylaluminum compound.
Career Highlights
Throughout his career, Takeshi Shiono has worked with various companies, including Tonen Chemical Corporation. His expertise in polymer chemistry has allowed him to contribute to advancements in the field, particularly in the development of innovative materials.
Collaborations
Shiono has collaborated with notable coworkers such as Kenji Tsuchihara and Kazuo Soga. Their combined efforts have furthered research and development in polymer science.
Conclusion
Takeshi Shiono's contributions to polymer chemistry through his patents and collaborations highlight his innovative spirit and dedication to advancing the field. His work continues to influence the development of new materials and processes in the industry.
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.