Nagareyama, Japan

Seiichi Miyakawa

This inventor holds 34 USPTO granted patents, primarily in Electrophotography. Top assignees: Ricoh Company, Ltd., Noritake Co., Ltd.. Active years: 1976-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiichi Miyakawa. Retrieved from https://idiyas.com/inventor/seiichi-miyakawa

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 3.3

ph-index = 15

Forward Citations = 604(Granted Patents)


Location History:

  • Nagareyama, JA (1976 - 1977)
  • Tokyo, JA (1977)
  • Tokyo, JP (1978 - 1982)
  • Nagareyama, JP (1979 - 1999)

Company Filing History:


Years Active: 1976-1999

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Areas of Expertise:
Electrophotography
Image Forming Device
Developing Apparatus
Auto Document Feeder
Electrostatic Copier
Toner Density Control
Solid State Charger
Drum Cleaning System
Reverse Development
Liquid Developer
Electrostatic Recording
Magnetic Brush
34 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Seiichi Miyakawa

Introduction

Seiichi Miyakawa, a prominent inventor based in Nagareyama, Japan, has made significant contributions to the field of technology with a remarkable portfolio of 34 patents. His innovative inventions primarily focus on image forming devices, showcasing his expertise and forward-thinking approach in the industry.

Latest Patents

Miyakawa's latest patents include an "Image forming device which forms an electric field to discharge an object." This invention describes an apparatus with an electrode member separated by a preselected gap from the object, utilizing a power source to apply a discharge voltage that facilitates discharge between the object and the electrode member. A notable feature of this invention is the incorporation of materials for the electrode member, ensuring a continuous functional relationship between discharge voltage and current.

Another significant invention is the "Wet-type image forming apparatus for forming a condensed toner image." This apparatus produces high-quality toner images by condensing the toner on a photosensitive drum, effectively adhering the toner without direct contact with the liquid carrier. It employs an electric field that aids in the transfer of the toner image from the photosensitive drum to a transfer material after passing through an area where the electric field is generated.

Career Highlights

Throughout his career, Seiichi Miyakawa has collaborated with notable companies, including Ricoh Company, Ltd. and Noritake Co., Ltd. His work at these organizations has paved the way for advancements in imaging technology, reflecting his commitment to innovation.

Collaborations

Miyakawa has worked alongside esteemed colleagues such as Susumu Tatsumi and Shigeru Suzuki. Their collaborative efforts have undoubtedly contributed to the successful development of groundbreaking technologies in the imaging sector.

Conclusion

Seiichi Miyakawa's dedication to innovation is evident in his impressive array of patents and his meaningful contributions to the technology landscape. His work continues to inspire future advancements in image forming technologies, securing his place as a significant figure in the realm of inventions.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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