Company Filing History:
2 out of 4 
1 out of 9 
1 out of 1 Years Active: 1980-1982
Title: Norihiro Tsujii: Innovator in Metal Tube Manufacturing
Introduction
Norihiro Tsujii is a notable inventor based in Atami, Japan. He has made significant contributions to the field of metal tube manufacturing, holding a total of 2 patents. His innovative designs and methods have advanced the technology used in creating thin-walled metal tubes.
Latest Patents
Tsujii's latest patents include a "Metal tube and apparatus and method for manufacturing the same." This invention features a thin-walled metal tube that consists of a tubular nipple section, a shoulder section, a tubular barrel section, and a border section. The barrel section is defined by a wall thickness ranging from about 20 microns to about 70 microns. The border section has a thickness-changing region, which is crucial for the tube's structural integrity. The apparatus for manufacturing this tube includes a punch and die designed for a single impact extrusion operation, ensuring precision in the production process.
Another significant patent is the "Collapsible tube and method of manufacture." This invention describes a seamless composite type collapsible tube that includes a tubular nipple section, a shoulder section, and a tubular barrel section. The tube is made from a continuous wall of metallic material with a wall thickness of about 20 to 70 microns, and it features a synthetic resinous layer for added durability.
Career Highlights
Throughout his career, Tsujii has worked with several companies, including Kyodo Insatsu Kabushiki Kaisha and Lion Hamigaki Kabushiki Kaisha. His experience in these organizations has contributed to his expertise in metal manufacturing processes.
Collaborations
Some of Tsujii's notable coworkers include Yoshihiko Nakahara and Kenichi Nakanishi. Their collaborative efforts have likely played a role in the development of innovative manufacturing techniques.
Conclusion
Norihiro Tsujii's contributions to the field of metal tube manufacturing are significant, with his patents showcasing advanced techniques and innovative designs. His work continues to influence the industry and inspire future innovations.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.