This inventor holds 2 USPTO granted patents. Top assignees: Matsushita Eco Technology Center Co., Ltd., Matsushita Electric Industrial Co., Ltd.. Active years: 1982-2007.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
1 out of 2 
1 out of 27,375 
Years Active: 1982-2007
Title: Hiroyuki Tokumasu: Innovator in Plastic Identification and Solar Energy
Introduction
Hiroyuki Tokumasu is a notable inventor based in Hirakata, Japan. He has made significant contributions to the fields of plastic identification and solar energy technology. With a total of 2 patents, his work reflects a commitment to innovation and environmental sustainability.
Latest Patents
One of Tokumasu's latest patents is a plastic identifying method. This method involves obtaining a first infrared absorption spectrum by irradiating infrared light onto an item containing plastic. The intensity of the infrared light that is totally reflected by the item is measured. The plastic is then identified by matching the first infrared absorption spectrum with a group of spectra measured for predetermined materials. This method allows for accurate identification of plastic items, even when they are colored or contain additives.
Another significant patent is a method for making a selective absorption film for solar energy. This method includes immersing aluminum or its alloy in water containing specific ions, which results in a chemical conversion film. This film exhibits high absorptivity and low emissivity, making it suitable for solar energy applications.
Career Highlights
Hiroyuki Tokumasu has worked with prominent companies such as Matsushita Electric Industrial Co., Ltd. and Matsushita Eco Technology Center Co., Ltd. His experience in these organizations has contributed to his expertise in developing innovative technologies.
Collaborations
Throughout his career, Tokumasu has collaborated with notable individuals, including Hideo Uchino and Teruo Gotou. These partnerships have likely enhanced his research and development efforts.
Conclusion
Hiroyuki Tokumasu's contributions to plastic identification and solar energy technology demonstrate his innovative spirit and dedication to advancing these fields. His patents reflect a deep understanding of materials and their applications, paving the way for future advancements.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile