Location History:
- Osaka, JP (1994 - 2000)
- Kyoto, JP (1998 - 2001)
- Ibaraki, JP (2002 - 2004)
Company Filing History:
16 out of 3,868 
1 out of 58 
1 out of 832,680 Years Active: 1994-2004
Title: The Innovative Journey of Hisao Hachisuka
Introduction
Hisao Hachisuka, a distinguished inventor based in Osaka, Japan, has made significant contributions to the field of membrane technology. With a remarkable portfolio of 18 patents, Hachisuka's innovations have paved the way for advancements in reverse osmosis processes, particularly in the treatment of water.
Latest Patents
Hisao Hachisuka's latest patents focus on improving the performance and durability of reverse osmosis membrane elements. One notable patent outlines a method of treating reverse osmosis membrane elements that feature a polyamide skin layer. By loading the membrane elements in a pressure vessel and treating them with a bromide-containing aqueous solution of free chlorine, the membranes maintain their effectiveness in reducing solute concentration over extended periods. This method also enhances the membranes' efficiency in rejecting non-electrolytic organic materials, such as boron, that remain undissociated in neutral environments.
Additionally, Hachisuka developed a spiral wound type separation membrane element. This innovative component features a carefully designed membrane structure formed by layering separation membranes supported on nonwoven fabric. These layers are bonded together, defining an envelope-like membrane that spirally wraps around a water collection pipe. The materials used in constructing these membranes are heat-resistant and alkali-resistant plastics, ensuring longevity and effectiveness in various operational conditions.
Career Highlights
Throughout his career, Hisao Hachisuka has been associated with Nitto Denko Corporation, where he has played a crucial role in advancing membrane technology. His work has not only contributed to the corporate sector but has also set industry standards for innovative water treatment processes.
Collaborations
Hachisuka has collaborated with esteemed professionals in the field, including Kenichi Ikeda and Masahiko Hirose. Their combined expertise has further driven innovations in membrane technology, enhancing the capabilities of systems that utilize reverse osmosis for various applications.
Conclusion
Hisao Hachisuka continues to be a pivotal figure in the realm of water treatment innovations. His extensive work and numerous patents reflect his commitment to enhancing the efficiency and effectiveness of reverse osmosis technologies. As water treatment challenges evolve, Hachisuka’s contributions will undoubtedly play a vital role in developing sustainable solutions for the future.
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.