Osamu Ohara

Title: Osamu Ohara: Inventor in Sheet Materials and Acoustic Diaphragms

Introduction

Osamu Ohara is an inventor associated with Kurashiki, Japan, and Kuraray Co., Ltd. His work includes inventions involving fire-resistant sheet materials, thermal insulation, and components for electro-acoustic transducers. He is credited with 4 patents.

Latest Patents

One of Ohara’s described inventions is a sheet-like material designed to combine fire resistance with bending workability. It contains non-flammable fibers and a thermoplastic-resin binder, with the fibers oriented to support the material’s performance. The invention also describes a heat-insulating material made from these sheets and wet-forming methods for producing them.

Another described invention is a diaphragm for an electro-acoustic transducer. The sheet combines a polymer—selected from polyolefins, polyesters, or polyamides—with mica flakes of specified dimensions. The mica is intended to improve the sheet’s dynamic modulus while keeping its loss tangent substantially unchanged.

Career Highlights

Ohara’s patent work addresses material properties and manufacturing methods, including the balance of fire resistance, flexibility, insulation, and acoustic performance. His inventions demonstrate applications of engineered sheet materials across building insulation and electro-acoustic devices.

Collaborations

Ohara is associated with Kuraray Co., Ltd. His listed coworkers include Koichi Saito and Kiyonobu Fujii.

Conclusion

Osamu Ohara’s patent portfolio reflects a focus on functional sheet materials, with inventions spanning fire-resistant insulation and improved diaphragms for electro-acoustic transducers.