This inventor holds 34 USPTO granted patents and 6 published patent applications and 7 EPO patents, primarily in Inkjet Technology. Top assignees: Fuji Photo Film Company, Limited, Fujifilm Corporation. Active years: 1994-2025.
Location History:
- Shizuoka-ken, JP (2002 - 2003)
- Fujinomiya, JP (2005 - 2009)
- Shizuoka, JP (1994 - 2010)
- Ashigarakami-gun, JP (2013)
- Kanagawa, JP (2009 - 2016)
Company Filing History:
17 out of 16,458 
17 out of 16,916 
Years Active: 1994-2025
Areas of Expertise:
Title: **Innovative Contributions of Naotaka Wachi in Ink Technology**
Introduction
Naotaka Wachi, based in Shizuoka, Japan, is a prominent inventor known for his significant contributions to ink technology. With a remarkable portfolio of 34 patents, Wachi has pioneered various innovations in ink compositions and imaging methods, solidifying his reputation in the field.
Latest Patents
Wachi's latest patents include advancements in ink composition and image recording methods. One notable patent involves an ink composition that comprises titanium dioxide particles, metal oxide particles, a dispersant, and water. Specifically, this ink composition features titanium dioxide particles with an average diameter of 100 nm or greater, while the metal oxide particles have a smaller average diameter. These metal oxide particles are derived from at least one metal selected from a group that includes zirconium, aluminum, silicon, zinc, and iron. Another significant patent details an image forming method that includes applying an ink composition containing a pigment and specific structural compounds onto a recording medium being conveyed at speeds of 80 m/min or higher.
Career Highlights
Throughout his career, Naotaka Wachi has worked with notable companies in the imaging sector, including Fuji Photo Film Company, Limited and Fujifilm Corporation. His extensive experience in these organizations has allowed him to refine his expertise in ink technology and its applications.
Collaborations
Wachi has collaborated with esteemed colleagues such as Toshiki Taguchi and Akira Hatakeyama, contributing to various projects that further enhance the field of imaging and ink innovations. These collaborations have facilitated knowledge exchange and have led to the development of cutting-edge technologies.
Conclusion
Naotaka Wachi's contributions to ink technology through his patents and collaborative efforts exemplify the spirit of innovation. His work not only influences the present but also shapes the future of imaging technologies, reflecting a commitment to advancing the industry.