This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignees: Free Hand, Inc., Mitsui Engineering and Shipbuilding Company Limited. Active years: 1993-1998.
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 1 
1 out of 244 
Years Active: 1993-1998
Title: Kazuo Arai: Inventor of a Practical Waste-Compaction Nozzle.
Introduction
Kazuo Arai is an inventor associated with Tokyo, Japan. His recorded portfolio includes 2 patents, including an invention designed to make waste disposal more efficient.
Latest Patents
Arai’s listed patent, “Air-Suction Nozzle for Compaction of Trash Bag,” describes a nozzle that removes air from a trash-filled plastic bag so the bag can be compacted. Its design uses concentric inner and outer tubes, perforations, a hub connected to an air-suction line, and a plug that holds the tubes in place. The arrangement allows air to be drawn from the bag while helping prevent water from being sucked into the nozzle when the waste is wet.
Career Highlights
Arai’s listed professional affiliations include Mitsui Engineering and Shipbuilding Company Limited and Free Hand, Inc. The available information does not specify his roles or the dates of his work with these organizations.
Collaborations
Hiroshi Tomaru and Yuki Takahashi are identified as Arai’s coworkers. The available information does not detail their specific contributions or any joint patent work.
Conclusion
Kazuo Arai’s recorded invention addresses a practical challenge in waste disposal by using air suction to compact trash-filled bags while limiting water intake.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile