Company Filing History:
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Years Active: 1983-1992
Title: **Innovative Contributions of Tsutomu Nakagawa**
Introduction
Tsutomu Nakagawa, a prominent inventor based in Musashino, Japan, has made significant contributions to the field of material science, particularly in the development of advanced polymeric membranes. With a total of three patents to his name, Nakagawa's work has paved the way for innovative solutions in separation technologies.
Latest Patents
Among his latest innovations is a **membrane for separating an organic solvent from a water-organic solvent mixture**. This advanced membrane features a polymeric structure formed from a copolymer predominantly consisting of an alpha, beta-unsaturated carbonyl compound. This compound includes acrylic acid esters and methacrylic acid esters, with the resulting polymeric membrane exhibiting a crosslinked structure. The membrane is supported on various substrates like flat membranes, pipes, or hollow fibers, and incorporates particles to enhance its separation capabilities, forming a composite-type separation membrane.
Another notable invention is a **surface-hydrophilic, highly selective semipermeable membrane**. This membrane consists of a hydrophobic polymer semipermeable component, complemented by a hydrophilic segment. The hydrophilic segment incorporates methylene or substituted methylene groups along with neutral hydroxyl groups, which are critical for the membrane's performance. This innovative design provides excellent resistance to heat and organic solvents, as well as non-adsorptivity for organic substances, including ionic organic compounds. As such, this membrane holds promising applications in microfiltration, ultrafiltration, reverse osmosis, and dialysis.
Career Highlights
Throughout his career, Nakagawa has collaborated with prestigious organizations such as Asahi Kasei Corporation and Lintec Corporation. His work at these institutions has significantly influenced advancements in polymer materials and separation technologies.
Collaborations
In his journey as an inventor, Nakagawa has worked alongside esteemed colleagues including Akon Higuchi and Masaru Hoshi. Their collaborative efforts have enriched the research dynamic and contributed to the success of numerous projects, particularly in the realm of membrane technologies.
Conclusion
Tsutomu Nakagawa stands out as a visionary innovator whose work in polymeric membranes has transformed various industrial applications. His groundbreaking patents not only reflect his expertise but also demonstrate a commitment to advancing technology in separation processes. With each new invention, Nakagawa continues to inspire future generations of scientists and engineers in the field.