This inventor holds 2 USPTO granted patents and 1 published patent application and 1 EPO patent. Top assignees: Tokyo Gas Company Limited, Omron Corporation. Active years: 2006-2020.
Location History:
- Minato-ku, JP (2006)
- Tokyo, JP (2020)
Company Filing History:
2 out of 193 
1 out of 4,209 
Years Active: 2006-2020
Title: Innovations of Hirohisa Sakuma
Introduction
Hirohisa Sakuma is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of technology, particularly in seismic sensors and acoustic communication devices. With a total of 2 patents, his work reflects a commitment to advancing safety and communication technologies.
Latest Patents
One of his latest patents is a seismic sensor and earthquake determination method. This innovative device operates in both a power-saving mode and a measurement mode, allowing it to efficiently monitor seismic activity. The sensor includes a measurement unit that detects acceleration, a filtering unit that activates when acceleration exceeds a certain threshold, and an earthquake determination unit that assesses whether an earthquake has occurred based on the filtered data. Additionally, it features an index calculation unit that quantifies the earthquake's scale, ensuring timely and accurate information during seismic events.
Another significant patent is an acoustic communication device and acoustic signal communication method. This invention involves an acoustic transmitter that sequentially transmits multiple pulse signals through sound. Each pulse signal consists of a modulated carrier wave with a unique frequency. The transmitter employs amplitude and/or phase modulation based on the transmission information, allowing for effective communication through sound waves.
Career Highlights
Hirohisa Sakuma has worked with prominent companies such as Tokyo Gas Company Limited and Omron Corporation. His experience in these organizations has contributed to his expertise in developing innovative technologies that address real-world challenges.
Collaborations
Throughout his career, Sakuma has collaborated with talented individuals, including Naotsugu Ueda and Hiroyuki Mino. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions.
Conclusion
Hirohisa Sakuma's contributions to technology through his patents in seismic sensors and acoustic communication devices highlight his innovative spirit and dedication to improving safety and communication. His work continues to influence the fields of technology and engineering, making a lasting impact on society.