Company Filing History:
5 out of 33 
1 out of 29 
1 out of 45 
Years Active: 1980-1993
Title: Minoru Hirai: Pioneer in Carbon Fiber Innovations
Introduction
Minoru Hirai is a renowned inventor based in Shizuoka, Japan, with a significant contribution to the field of carbon fiber technology. With seven patents to his name, his innovations have had a lasting impact on the use of carbon fibers in various applications, particularly in composite materials.
Latest Patents
Hirai's most recent patents include a process for producing carbon fiber chopped strands. This invention details a carbon fiber chopped strand that is particularly suitable for use in composite materials. The strands have a circular or elliptical cross-section, with carbon fiber filaments bundled by a sizing agent in an amount ranging from 1 to 10% by weight based on the chopped strand. The patent specifies that these strands exhibit a denseness of between 0.4 and 0.9, according to a defined formula involving the average diameter of the chopped strands and the filaments. Additionally, he has developed a method for manufacturing activated carbon fibers, which comprises a series of systematic steps designed to enhance fiber properties.
Career Highlights
Throughout his career, Minoru Hirai has worked with reputable companies such as Toho Beslon Co., Ltd. and Toho Rayon Co., Ltd. His expertise in carbon fiber technology has allowed him to drive forward innovation in both organizations, enhancing processes and product offerings in the market.
Collaborations
Hirai has collaborated with notable colleagues, including Kazuo Izumi and Shigeru Ikegami. These partnerships have helped foster a rich environment for innovation and development, leading to advancements that benefit various industries reliant on composite materials.
Conclusion
With his innovative mindset and dedicated career, Minoru Hirai continues to be a significant figure in the field of carbon fiber technology. His inventions not only highlight his expertise but also contribute to the advancement of materials science, proving that his work will influence the industry for years to come.
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.