This inventor holds 27 USPTO granted patents and 3 published patent applications and 2 EPO patents, primarily in Silicone Emulsion Technology. Top assignees: Dow Corning Toray Silicone Company Limited, Dow Corning Toray Company, Ltd., Dow Corning Silicone Company, Ltd.. Active years: 1989-2014.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Ichibara, JP (1991 - 1992)
- Chiba, JP (1994 - 1995)
- Chiba Perfecture, JP (1997)
- Chiba Prefecture, JP (1997 - 2002)
- Ichihara, JP (1989 - 2014)
Company Filing History:
22 out of 523 
3 out of 252 
1 out of 3 Years Active: 1989-2014
Areas of Expertise:
Title: Tsutomu Naganawa: Innovator from Chiba Prefecture
Introduction
Tsutomu Naganawa, an accomplished inventor based in Chiba Prefecture, Japan, has made significant contributions to the field of silicone chemistry. With a remarkable portfolio of 27 patents, he is recognized for his innovative methods in producing stable emulsions that leverage the unique properties of polyorganosiloxanes.
Latest Patents
Among his latest patents is a groundbreaking method for producing emulsions. This invention aims to simplify the acquisition of emulsions that exhibit superior storage stability, particularly focusing on those derived from polyorganosiloxanes. The method involves emulsifying a mixture of an oil and a surfactant synthesized within the oil, allowing for the creation of emulsions that are typically challenging to stabilize.
Another notable patent is the oil-in-water silicone emulsion composition, which incorporates various components, including polyorganosiloxanes with silicon-bonded hydroxyl groups, colloidal silica, and both ionic and nonionic emulsifying agents. This composition stands out for its exceptional storage stability and ability to create a cured film with satisfactory elasticity without the use of tin catalysts.
Career Highlights
Tsutomu Naganawa has held positions in prominent companies, including Dow Corning Toray Silicone Company Limited and Dow Corning Toray Company, Ltd. His work in these organizations has been instrumental in advancing silicone technologies, particularly in the development of innovative emulsion compositions.
Collaborations
Naganawa has had the opportunity to collaborate with esteemed colleagues in the field, such as Isao Ona and Hiroki Ishikawa. These partnerships have fostered a collaborative environment where ideas can flourish, leading to the successful development of new technologies.
Conclusion
With a robust portfolio and a focus on innovations that enhance the stability of silicone-based products, Tsutomu Naganawa continues to be a driving force in the world of silicone chemistry. His contributions not only advance the field but also pave the way for future innovations in emulsion technologies.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile