Location History:
- Shizuoka-ken, JP (2003 - 2004)
- Haibara-gun, JP (2005 - 2015)
- Shizuoka, JP (1996 - 2022)
Company Filing History:
11 out of 16,093 
7 out of 16,458 
Years Active: 1996-2022
Title: Koji Sonokawa: An Innovator in Lithographic Printing Technology
Introduction
Koji Sonokawa is a prominent inventor based in Shizuoka, Japan, known for his significant contributions to the field of lithographic printing technology. With a total of 18 patents to his name, he continuously pushes the boundaries of innovation, enhancing the capabilities and efficiency of printing processes.
Latest Patents
Among Sonokawa's latest innovations are two noteworthy patents focused on lithographic printing plate precursors. The first patent describes a lithographic printing plate precursor featuring an image-recording layer on an aluminum support. This innovative precursor utilizes a mixture of a polymerization initiator, infrared absorber, polymer particle, and a polymerizable compound. The polymerizable compound is characterized by several critical properties, including a molecular weight of 1,500 to 3,000, a double bond equivalent of 200 or less, and a CLog P of 9 or less.
In his second recent patent, Sonokawa developed a planographic printing plate precursor that comprises a support and an image recording layer. This precursor optimizes the polymer content on the image recording layer's surface, enhancing its performance and durability for printing applications.
Career Highlights
Koji Sonokawa has collaborated with reputable organizations throughout his career. Notably, he has worked with Fujifilm Corporation and Fuji Photo Film Company, Limited, where he applied his expertise in developing innovative printing technologies. His dedication to research and development has led to advancements that benefit the printing industry as a whole.
Collaborations
Throughout his career, Sonokawa has had the pleasure of working alongside talented colleagues, including Tsumoru Hirano and Tsubasa Fukuda. These collaborations have fostered a creative environment, leading to the successful development of innovative solutions in lithographic printing technology.
Conclusion
Koji Sonokawa stands as an influential figure in the realm of lithographic printing, with a robust portfolio that reflects his commitment to innovation. His recent patents not only exemplify his technical prowess but also contribute to the evolution of printing methodologies. As an inventor, Sonokawa continues to inspire future advancements in the industry.