Takeshi Hirano

Title: Innovations by Takeshi Hirano in Speaker Technology

Introduction

Takeshi Hirano is a notable inventor based in Sagamihara, Japan. He has made significant contributions to the field of speaker technology, holding 2 patents that showcase his innovative approach to manufacturing speaker diaphragms and dynamic speakers.

Latest Patents

Hirano's latest patents focus on the development of speaker diaphragms and the manufacturing methods associated with them. One of his inventions involves adhering a cloth or paper to one surface of a wooden sheet to create an adhered sheet. An approximately V-shaped notch is then provided on this adhered sheet, which is wetted to soften it. A lubricant that retains moisture is impregnated into the sheet. The edge portions of the notch are overlapped, and the adhered sheet is tentatively molded into an approximately horn shape through a first hot press molding process. After drying, the sheet is impregnated with thermosetting resin and half-dried before undergoing a second hot press molding. Finally, a moisture-proof agent is applied, and a center hole for a voice coil is created, resulting in a speaker diaphragm with a predetermined dimension and shape.

Career Highlights

Takeshi Hirano is currently employed at the Victor Company of Japan, Limited, where he continues to innovate in the field of audio technology. His work has contributed to advancements in speaker design and manufacturing processes.

Collaborations

Hirano has collaborated with notable coworkers, including Satoshi Imamura and Tomoaki Ogata, who have also contributed to the development of innovative audio technologies.

Conclusion

Takeshi Hirano's contributions to speaker technology through his patents and work at the Victor Company of Japan, Limited highlight his role as a significant inventor in the audio industry. His innovative methods for creating speaker diaphragms demonstrate the potential for advancements in sound technology.