This inventor holds 23 USPTO granted patents and 2 EPO patents, primarily in Electrophotographic Imaging. Top assignees: Hitachi, Ltd., Ricoh Company, Ltd., Ricoh Printing Systems, Ltd.. Active years: 1997-2013.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Yamanashi-ken, JP (1998)
- Hitachi, JP (1997 - 2009)
- Ibaraki, JP (2008 - 2010)
- Hyogo, JP (2013)
Company Filing History:


Years Active: 1997-2013
Areas of Expertise:
Title: Masashi Yamamoto: A Pioneer in Image Forming Technology
Introduction
Masashi Yamamoto, a renowned inventor based in Hitachi, Japan, has made significant contributions to the field of image forming technology. With an impressive portfolio of 23 patents, Yamamoto has been at the forefront of innovations that enhance the efficiency and quality of imaging devices.
Latest Patents
Among his latest inventions is an image forming apparatus designed to decrease the sheet transportation speed difference between a registration device and a transfer device. This innovative system features a transfer material transportation device that efficiently moves the transfer material, ensuring seamless interaction between the transfer device and the fusing device. Furthermore, he developed a multicolor image forming apparatus, which incorporates a photosensitive belt unit, exposure device, and multiple developing devices to deliver high-quality images. This apparatus allows for the sequential superimposition of color developer images, enabling the creation of vivid multicolored prints.
Career Highlights
Yamamoto's career includes pivotal roles at prestigious companies such as Hitachi Ltd. and Ricoh Company Ltd. His work has played an essential role in advancing imaging technologies, making substantial improvements in print quality and operational efficiency.
Collaborations
Throughout his career, Masashi Yamamoto has collaborated with talented professionals, including colleagues Toru Miyasaka and Kazuhiro Wakamatsu. Together, they have combined their expertise to push the boundaries of innovation within the imaging sector.
Conclusion
In conclusion, Masashi Yamamoto's extensive contributions to image forming technology through his multiple patents exemplify his status as a leading inventor in the field. His innovative approaches continue to influence the design and functionality of imaging devices, making a lasting impact on the industry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile