Location History:
- Machida, JA (1978)
- Yokohama, JP (1982 - 1994)
- Tokyo, JP (1994)
- Machida, JP (1978 - 1997)
- Nagahama, JP (1999)
Company Filing History:
11 out of 59 
5 out of 38 
2 out of 614 
Years Active: 1978-1999
Title: Seiji Sakamoto: Innovator in Polyester Film Technology
Introduction
Seiji Sakamoto is a prominent inventor based in Machida, Japan, known for his significant contributions to the field of polyester film technology. With a total of 18 patents to his name, Sakamoto has developed innovative solutions that enhance the performance and application of polyester films in various industries.
Latest Patents
One of Sakamoto's latest patents is for a polyester film designed for sublimation type thermal transfer printing. This biaxially oriented polyester film features a coating layer and a sublimation type ink layer, which are formulated with specific weight ratios of an aqueous acrylic resin, an aqueous polyester, and an aqueous epoxy compound. These precise formulations ensure optimal performance in thermal transfer applications.
Another notable patent involves a biaxially oriented polyester film intended for magnetic recording mediums. This film incorporates at least two different sizes of synthetic calcium carbonate particles and aluminum oxide particles, resulting in excellent surface uniformity and running properties. The innovative treatment of the synthetic calcium carbonate particles enhances the film's durability, minimizing scratches and abrasion dust.
Career Highlights
Throughout his career, Seiji Sakamoto has worked with several companies, including Diafoil Company, Ltd. and Diafoil Hoechst Company, Limited. His experience in these organizations has allowed him to refine his expertise in polyester film technology and contribute to advancements in the field.
Collaborations
Sakamoto has collaborated with notable colleagues such as Masamichi Watanabe and Chikakazu Kawaguchi. These partnerships have fostered a creative environment that has led to the development of innovative products and technologies.
Conclusion
Seiji Sakamoto's work in polyester film technology has made a significant impact on various industries. His innovative patents and collaborations highlight his dedication to advancing the field and improving the performance of polyester films.