This inventor holds 1 USPTO granted patent. Top assignee: Sumitomo Chemical Company, Limited. Active years: 2020.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2020
Title: Mariko Kunai: Inventor in Film-Roll Technology.
Introduction
Mariko Kunai is an inventor associated with Niihama, Japan, and Sumitomo Chemical Company, Limited. Her patent work addresses the design and production of film rolls.
Latest Patents
Kunai is associated with 1 patent: “Film roll, method of producing the same, and method of testing the same.” The invention restricts the inclination of a film roll’s outer circumferential surface relative to its widthwise axis. It uses an outer cylinder part whose material thickness decreases toward the negative side of the y-axis, together with a slit separator wound around the cylinder whose thickness increases toward that side.
Career Highlights
The patent describes a coordinated approach to the cylinder and separator dimensions, with the aim of controlling the film roll’s outer-surface inclination. Kunai’s listed company affiliation is Sumitomo Chemical Company, Limited.
Collaborations
Hiroko Nakashima and Daizaburo Yashiki are identified as Kunai’s coworkers.
Conclusion
Mariko Kunai’s patent focuses on film-roll construction and related production and testing methods, reflecting her work in materials and manufacturing technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile