Kawaguchi, Japan

Chiaki Muraoka

This inventor holds 63 USPTO granted patents and 16 published patent applications and 10 EPO patents, primarily in Inkjet Printing Technology (CPC class B41J). Top assignee: Canon Kabushiki Kaisha. Active years: 2006-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Chiaki Muraoka. Retrieved from https://idiyas.com/inventor/chiaki-muraoka

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

USPTO Granted Patents = 63 

% Patents Active = 79.4

 

Average Co-Inventor Count = 3.4

ph-index = 7

Forward Citations = 152(Granted Patents)

Forward Citations (Not Self Cited) = 119(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Saitama, JP (2006 - 2023)
  • Kawaguchi, JP (2010 - 2024)

Company Filing History:


Years Active: 2006-2026

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Areas of Expertise:
Inkjet Printer
Liquid Ejection Head
Image Recording Apparatus
Liquid Discharge Head
Liquid Replenishing System
Printing Element Substrate
Liquid Ejecting Apparatus
Manufacturing Method
Printing Apparatus
Control Method
Flow Passage
Aging Method
63 patents (USPTO):Explore Patents

Title: Innovations by Chiaki Muraoka: Pioneering Technology in Printing and Liquid Replenishment

Introduction: Chiaki Muraoka, an accomplished inventor based in Kawaguchi, Japan, has significantly contributed to technological advancements with a remarkable portfolio of 52 patents. His innovative solutions are particularly notable in the fields of printing technology and liquid replenishment systems, highlighting his expertise and commitment to enhancing user experiences.

Latest Patents: Among Chiaki Muraoka's latest inventions is an inkjet printer designed with an inkjet head capable of efficiently discharging ink. This printer features an ink tank composed of several ink storage portions from which ink is supplied to the inkjet head via a connected tube. Unique to this design are the replenishing ports that allow for the ink storage portions to be replenished with ink, alongside an outer wall of the tank that boasts a greater thickness than the partition walls between the storage portions. Furthermore, his invention includes a liquid replenishing system that consists of a liquid tank and a liquid storage bottle. The liquid tank is ingeniously designed with a tank body, a cylindrical adapter, and a needle that penetrates into the tank body, ensuring a seamless flow of liquid replenishment.

Career Highlights: Chiaki Muraoka has made significant strides in his career at Canon Kabushiki Kaisha, where he has played an essential role in developing cutting-edge technologies. His relentless pursuit of innovation has garnered him numerous patents, reinforcing his reputation as a leading inventor in his field.

Collaborations: Throughout his career, Muraoka has collaborated with esteemed colleagues such as Keiji Tomizawa and Takuya Iwano. Together, they have contributed to the successful development of various patented technologies, adding to the intellectual wealth of Canon and advancing industrial practices.

Conclusion: Chiaki Muraoka's dedication to innovation and his ability to conceptualize and develop advanced technologies has undoubtedly made a lasting impact on the fields of printing and liquid replenishment. With a wealth of patents to his name and collaborative success, he continues to be a prominent figure in the world of technology and innovation.

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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