Location History:
- Yokohama, JA (1976)
- Yokohama, JP (1981 - 1983)
Company Filing History:
14 out of 1,379 
2 out of 107 Years Active: 1976-1983
Title: Hisamichi Murakami: Innovator in Heat Sensitive Technology
Introduction
Hisamichi Murakami is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of heat-sensitive recording technology, holding a total of 14 patents. His innovative work has advanced the capabilities of recording sheets used in various applications.
Latest Patents
Among his latest patents, Murakami has developed a heat-sensitive recording sheet that boasts improved light resistance and water resistance. This innovative sheet incorporates a developer that contains one or more specified metal salts of 2,2'-bisphenolsulfide, 2,2'-bisphenolsulfoxide, and 2,2'-bisphenolsulfone compounds. Additionally, the heat-sensitive recording sheet can include a heat fusible material with a melting point ranging from 50 to 190 degrees Celsius. Another notable patent is a color-developer for pressure-sensitive recording sheets. This developer comprises a co-condensate of a reaction intermediate of a p-substituted phenol and a trifunctional or higher phenol, or a polyvalent metal salt of said co-condensate. The reaction intermediate is obtained by reacting the p-substituted phenol under acidic conditions with formaldehyde or a substance capable of generating formaldehyde.
Career Highlights
Murakami has worked with notable companies such as Mitsui Toatsu Chemicals, Incorporated and Jujo Paper Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to the development of innovative products in the chemical and paper industries.
Collaborations
Throughout his career, Murakami has collaborated with talented individuals, including Akihiro Yamaguchi and Keizaburo Yamaguchi. These collaborations have fostered a creative environment that has led to the successful development of new technologies.
Conclusion
Hisamichi Murakami's contributions to heat-sensitive technology have made a lasting impact in his field. His innovative patents and collaborations highlight his dedication to advancing recording technologies. His work continues to influence the industry and inspire future innovations.