This inventor holds 5 USPTO granted patents. Top assignees: Toyo Boseki Kabushiki Kaisha, Kabushikikaisha Kenwood, Shoei Kakou Kabushiki Kaisha. Active years: 1989-1991.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Ohtsu, JP (1989)
- Shiga, JP (1990)
- Otsu, JP (1991)
- Nishinomiya, JP (1991)
Company Filing History:

Years Active: 1989-1991
Title: Innovations by Yoshikazu Shirasaki
Introduction
Yoshikazu Shirasaki is a notable inventor based in Otsu, Japan. He has made significant contributions to the field of materials science and engineering, particularly in the development of advanced composite materials. With a total of 5 patents to his name, Shirasaki's work has had a considerable impact on various industries.
Latest Patents
One of his latest innovations is a helmet with reinforcement. This improved helmet comprises a fiber reinforced thermosetting resin as its main component. In this helmet, at least a part subjected to shock adsorption property tests defined by JIS T 8133 (1982) is reinforced with a cloth of polyethylene fiber. This fiber has high tenacity and high modulus, with a tensile strength of not less than 20 g/denier and a tensile modulus of not less than 500 g/denier. Another significant patent is a speaker diaphragm, which is formed by heat-pressurized molding a composite structure of fabric cloth and resin that is sank into the fabric cloth. The fabric cloth is woven from high strength and high elasticity polyethylene fiber, which has a tensile modulus of at least 4,500 kg/mm² (500 g/d).
Career Highlights
Throughout his career, Yoshikazu Shirasaki has worked with prominent companies such as Toyo Boseki Kabushiki Kaisha and Shoei Kakou Kabushiki Kaisha. His experience in these organizations has allowed him to refine his skills and contribute to innovative projects.
Collaborations
Shirasaki has collaborated with several talented individuals in his field, including Ichiro Yoshida and Shuhei Ohta. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
Yoshikazu Shirasaki's contributions to innovation and invention in materials science are noteworthy. His patents reflect a commitment to enhancing safety and performance in various applications. His work continues to inspire future advancements in technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile