Location History:
- Iwakuni, JA (1976)
- Hachioji, JP (1982 - 1988)
Company Filing History:
Years Active: 1976-1988
Title: Hirofumi Yoshikawa: Innovator in Polyester Film Technology
Introduction
Hirofumi Yoshikawa is a notable inventor based in Hachioji, Japan. He has made significant contributions to the field of polyester film technology, holding a total of 5 patents. His work focuses on innovative processes that enhance the properties and applications of polyester films.
Latest Patents
Yoshikawa's latest patents include a process for surface treating a polyester film. This invention involves a polyester film that has a primer layer made from a crosslinked product of a polyurethane with functional groups such as carboxyl, sulfo, and hemisulfate groups, along with a polyepoxy compound. The process allows for the production of a polyester film with a primer layer by applying an aqueous primer coating composition before the film's crystallization and orientation are completed. This method is particularly useful for creating base films for magnetic recording media. Another significant patent is for the production of a slippery biaxially stretched polyester film. This process entails coating one or both surfaces of a running polyester film with an aqueous solution or dispersion before the completion of its crystalline orientation.
Career Highlights
Hirofumi Yoshikawa is associated with Teijin Limited, a company known for its advancements in polymer technology. His work has contributed to the development of high-performance materials that are widely used in various industries.
Collaborations
Yoshikawa has collaborated with notable coworkers, including Tamaki Kanai and Kenji Suzuki. Their combined expertise has furthered the innovation in polyester film technology.
Conclusion
Hirofumi Yoshikawa's contributions to polyester film technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence the development of advanced materials that meet the demands of modern 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.