Location History:
- Nagano, JP (2003 - 2007)
- Nagano-ken, JP (2003 - 2008)
- Kanagawa, JP (2008)
- Kanagawa-Ken, JP (2009)
- Kawasaki, JP (2010 - 2013)
Company Filing History:
17 out of 33,404 
1 out of 16,042 
1 out of 622 Years Active: 2003-2013
Title: Masahiro Hanmura: Innovator in Ink Composition
Introduction: Masahiro Hanmura, based in Kawasaki, Japan, is a talented inventor recognized for his significant contributions to ink technology. With a remarkable portfolio of 19 patents, Hanmura has dedicated his career to advancing the field of ink compositions and recording methods.
Latest Patents: Among his latest innovations is a patent for an ink composition that includes a pigment coated with a water-insoluble polymer. This composition boasts a resin emulsion as an additive, combined with water and a water-soluble organic compound. The weight average molecular weight of the water-insoluble polymer ranges from 50,000 to 150,000. Additionally, the resin emulsion is crafted from a resin that contains a monomer component similar to that of the water-insoluble polymer, with a weight average molecular weight 1.5 to 4 times that of the polymer itself. The average particle size of the resin emulsion falls between 20 to 200 nm, while the pigment particles are sized from 50 to 150 nm. Hanmura's ink set, which includes at least one black ink composition with a self-dispersing pigment and a resin emulsion, alongside at least one color ink composition with an organic pigment covered with a water-insoluble polymer, exemplifies his innovative spirit.
Career Highlights: Hanmura's remarkable career includes significant experiences with esteemed organizations, most notably Seiko Epson Corporation. His expertise and dedication to the field have enabled numerous advancements in ink technology and applications.
Collaborations: Throughout his career, Hanmura has collaborated with talented individuals in the industry, including his coworkers Hiroyuki Onishi and Miharu Kanaya. These collaborations have further enriched his inventions and contributions to the ink technology sector.
Conclusion: Masahiro Hanmura's contributions to the field of ink compositions and recording methods position him as a notable inventor in Japan. With his extensive portfolio of patents and valuable collaborations, he continues to pave the way for innovation in ink technology, showcasing his dedication to research and development in this vital industry.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.