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For the Inventor, By the Inventor

Kanagawa, Japan

Itaru Watanabe

This inventor holds 31 USPTO granted patents, primarily in Inkjet Printing Technology. Top assignees: Canon Kabushiki Kaisha, Nippon Kokan Kabushiki Kaisha, Asahi Kasei Kogyo Kabushiki Kaisha. Active years: 1977-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Itaru Watanabe. Retrieved from https://idiyas.com/inventor/itaru-watanabe

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

USPTO Granted Patents = 31

% Patents Active = 90.3

Average Co-Inventor Count = 4.2

ph-index = 11

Forward Citations = 405(Granted Patents)


Location History:

  • Yokohama, JA (1977 - 1978)
  • Tokyo, JP (1991 - 2002)
  • Kawasaki, JP (1997 - 2002)
  • Kanagawa, JP (1979 - 2006)
  • Yokohama, JP (1978 - 2009)

Company Filing History:

goldMedal12 out of 92,901 
 
Canon Kabushiki Kaisha
 patents
silverMedal12 out of 487 
 
Nippon Kokan Kabushiki Kaisha
 patents
bronzeMedal5 out of 1,297 
 
Asahi Kasei Kogyo Kabushiki Kaisha
 patents
4. 1 out of 2,565 
 
Hoya Corporation
 patents
5. 1 out of 1,921 
 
Kobe Steel, Ltd.
 patents
6. 1 out of 681 
 
Tokyo Shibaura Electric Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1977-2009

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Areas of Expertise:
Inkjet Recording Apparatus
Cartridge Design
Liquid Supply System
Pressure Adjustment Chamber
Printing Head
Optical Linear Encoder
Cation Exchange Membrane
Gas Shielded Arc Welding
High Strength Steel
Electrolysis Process
Photocatalyst Material
31 patents (USPTO):Explore Patents
1. 7588326 - Inkjet recording apparatus (2009-09-15),
2. 7234800 - Inkjet recording apparatus (2007-06-26),
3. 7150519 - Ink jet recording apparatus (2006-12-19),
4. 6851795 - Cartridge with opposed electrical and ink connection portions, and carriage and ink jet recording apparatus for same (2005-02-08),
5. 6805437 - Liquid supply system, ink jet recording head, ink jet recording apparatus and liquid filling method (2004-10-19),
6. 6733117 - Pressure adjustment chamber, ink-jet recording head having the same, and ink-jet recording device using the same (2004-05-11),
7. 6631966 - Recording head and recording apparatus with temperature control (2003-10-14),
8. 6468428 - Glass material for carrying a photocatalyst, filter device using the same and light irradiating method (2002-10-22),
9. D461494 - Printing head for printer (2002-08-14),
10. D461493 - Printing head for printer (2002-08-14),
11. 6361136 - Detection system, liquid-jet printing apparatus and liquid container (2002-03-26),
12. 6264303 - Optical linear encoder and recording apparatus using the same (2001-07-24),
13. 5696634 - Objective lens for image pickup apparatus with size of image pickup (1997-12-09),
14. 4988035 - Method of liquid phase diffusion bonding of metal bodies (1991-01-29),
15. 4572748 - Method of manufacturing high tensile strength steel plates (1986-02-25),

Title: **Innovative Contributions of Itaru Watanabe in Inkjet Technology**

Introduction

Itaru Watanabe is a notable inventor located in Kanagawa, Japan, recognized for his significant contributions to the realm of inkjet technology. With an impressive portfolio of 31 patents, Watanabe has made substantial advancements that have influenced various industries.

Latest Patents

Among his latest innovations is an inkjet recording apparatus designed to optimize ink delivery. This apparatus features a single ink supply path that hermetically seals an ink tank and a recording head, preventing air exposure. The mechanism includes first and second hollow needles that connect the ink tank, ensuring that when the ink tank is detached, the flow path is sealed automatically. This innovative design effectively prevents ink leakage outside of the apparatus, showcasing Watanabe's keen focus on practical and efficient solutions in inkjet technology.

Career Highlights

Watanabe's career spans several prestigious organizations, including Canon and Nippon Kokan. His tenure at Canon Kabushiki Kaisha allowed him to be at the forefront of inkjet technology advancements, where he has crafted numerous patents that continue to set benchmarks in the industry. His contributions have not only enhanced the functionality of inkjet printers but have also played a critical role in improving user experience and operational efficiency.

Collaborations

Watanabe's innovations were further enriched by his collaborations with fellow inventors such as Jinkichi Tanaka and Hiroki Tajima. Their combined expertise in technology and engineering has fostered an environment ripe for innovative thinking, leading to the development of groundbreaking inkjet solutions and ensuring a lasting influence on the printing industry.

Conclusion

Itaru Watanabe stands out as a pivotal figure in the field of inkjet technology through his extensive patent portfolio and collaborative efforts. His latest inventions demonstrate a clear understanding of practical functionality, addressing common challenges faced by users and manufacturers alike. As technology continues to evolve, Watanabe's contributions will undoubtedly influence future innovations in the inkjet printing landscape.

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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