logo

For the Inventor, By the Inventor

Ibaraki, Japan

Ryoji Kamiyama

This inventor holds 32 USPTO granted patents and 5 published patent applications and 6 EPO patents, primarily in Electronic Pen Technology. Top assignee: Wacom Co., Ltd.. Active years: 2016-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryoji Kamiyama. Retrieved from https://idiyas.com/inventor/ryoji-kamiyama

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

USPTO Granted Patents = 32 

% Patents Active = 100.0

 

Average Co-Inventor Count = 2.0

ph-index = 6

Forward Citations = 93(Granted Patents)


Location History:

  • Toyko, JP (2020)
  • Ibaraki, JP (2016 - 2022)
  • Tokyo, JP (2022 - 2023)
  • Saitama, JP (2022 - 2024)

Company Filing History:

goldMedal32 out of 1,270 
 
Wacom Co., Ltd.
 patents

Years Active: 2016-2025

Loading Chart...
Loading Chart...
Areas of Expertise:
Electronic Pen
Electronic Cartridge
Position Indicator
Writing Information Processing
Knock-Type Pen
Pen Pressure Detection
Core Body
Magnetic Core Coil
Erasing Device
Central Rod
Main Body Unit
32 patents (USPTO):Explore Patents
1. 12216841 - Electronic pen, electronic pen cartridge, and electronic pen main unit (2025-02-04),
2. 12153744 - Electronic pen and electronic pen main body (2024-11-26),
3. 12001618 - Knock-type electronic pen including first and second position indicators located at different ends of a tubular casing (2024-06-04),
4. 11941194 - Electronic pen cartridge (2024-03-26),
5. 11861078 - Electronic pen central rod and electronic pen main body part (2024-01-02),
6. 11809644 - Electronic pen, electronic pen cartridge, and electronic pen main unit (2023-11-07),
7. D1001130 - Cartridge for an electronic pen (2023-10-10),
8. 11714498 - Electronic pen core body and electronic pen (2023-08-01),
9. 11662834 - Electronic erasing device and writing information processing system (2023-05-30),
10. D978966 - Cartridge for an electronic pen (2023-02-21),
11. D978243 - Cartridge for an electronic pen (2023-02-14),
12. 11573649 - Electronic pen core body and electronic pen (2023-02-07),
13. 11531410 - Electronic pen central rod and electronic pen main body part (2022-12-20),
14. D968408 - Cartridge for an electronic pen (2022-11-01),
15. D966268 - Cartridge for an electronic pen (2022-10-11),

Title: The Innovative Mind Behind Wacom: Ryoji Kamiyama

Introduction: Ryoji Kamiyama, a talented inventor based in Ibaraki, Japan, has made significant contributions to the field of electronic pens through his relentless pursuit of technological advancements. With an impressive portfolio of 30 patents, Kamiyama continues to revolutionize the way we interact with digital devices.

Latest Patents: Among his latest patents is the knock-type electronic pen, which features first and second position indicators located at different ends of a tubular casing. This innovative design incorporates a knock cam mechanism and holding mechanism to enhance user experience and functionality. Additionally, Kamiyama's electronic pen cartridge offers a replaceable solution for electronic pens, showcasing his expertise in creating efficient and user-friendly products.

Career Highlights: Ryoji Kamiyama is an integral member of Wacom Co., Ltd., a leading technology company specializing in digital pen tablets and related products. His dedication to research and development has resulted in numerous cutting-edge inventions that have solidified Wacom's position in the industry.

Collaborations: Throughout his career, Kamiyama has collaborated closely with esteemed colleagues such as Toshihiko Horie and Masamitsu Ito. Together, they have worked tirelessly to push the boundaries of innovation and create solutions that meet the evolving needs of consumers worldwide.

Conclusion: Ryoji Kamiyama's exceptional talent and unwavering commitment to innovation have established him as a key figure in the realm of electronic pen technology. His inventive spirit continues to drive progress in the industry, shaping the way we engage with digital tools.

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]
Loading…