This inventor holds 32 USPTO granted patents and 1 published patent application, primarily in Electrophotographic Printing. Top assignees: Fuji Photo Film Company, Limited, Fujifilm Corporation. Active years: 1980-2014.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Asaka, JP (1980 - 1983)
- Asaki, JP (1983)
- Saitama, JP (1984 - 1991)
- Shizuoka, JP (1994 - 2002)
- Shizuoka-ken, JP (2003)
- Minami-ashigara, JP (2013)
- Kanagawa, JP (1987 - 2014)
Company Filing History:
30 out of 16,458 
2 out of 16,949 
Years Active: 1980-2014
Areas of Expertise:
Title: Innovations of Hiromichi Tachikawa: A Pioneer in Cellulose Acylate Technology
Introduction: Hiromichi Tachikawa, based in Kanagawa, Japan, is a distinguished inventor with a remarkable portfolio that includes 32 patents. His contributions to the field of materials science, particularly in cellulose acylate technology, have significantly impacted various industries, including display technology.
Latest Patents: Tachikawa's recent innovations focus on cellulose acylate laminate films and their applications in polarizers and liquid crystal display devices. One of his notable patents describes a cellulose acylate laminate film comprising a low-substitution layer made from a non-phosphate compound and a specific cellulose acylate, alongside a high-substitution layer. This novel structure ensures that the refractive index (Re) at a wavelength of 550 nm is equal to or exceeds that at 440 nm. Another significant patent involves the development of a protective film for polarizers, which utilizes a cellulose resin acylated with carbon chains between 2 to 4, having a defined degree of acyl substitution. This innovation is designed to achieve specific optical properties, thus enhancing film performance.
Career Highlights: Tachikawa has spent a substantial part of his career at renowned companies, including Fuji Photo Film Company, Limited, and Fujifilm Corporation. His work has not only advanced the technology surrounding cellulose materials but also contributed to his companies' standing in high-tech industries by bridging the gap between innovative design and practical application.
Collaborations: Throughout his professional journey, Tachikawa has collaborated with notable colleagues such as Hiroaki Yokoya and Fumiaki Shinozaki. Their collective efforts have fostered a creative environment that has spurred numerous advancements in cellulose acylate technology.
Conclusion: Hiromichi Tachikawa's extensive patent portfolio and innovative work have established him as a key figure in materials science. His dedication to improving the functionality and efficiency of cellulose acylate films continues to inspire future advancements in technology. As industries advance toward more sophisticated materials, Tachikawa's contributions will remain influential.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile