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For the Inventor, By the Inventor

Fukuoka, Japan

Hajime Kakihana

This inventor holds 51 USPTO granted patents, primarily in Bathroom Fixtures (CPC class 2302). Top assignee: Toto Ltd.. Active years: 2004-2014.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hajime Kakihana. Retrieved from https://idiyas.com/inventor/hajime-kakihana

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

USPTO Granted Patents = 51

% Patents Active = 100.0

Average Co-Inventor Count = 1.9

ph-index = 14

Forward Citations = 643(Granted Patents)

Forward Citations (Not Self Cited) = 628(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kitakyusyu, JP (2008 - 2009)
  • Morrow, GA (US) (2008 - 2011)
  • Fukuoka, JP (2004 - 2013)
  • Kitakyushu, JP (2006 - 2014)

Company Filing History:

goldMedal51 out of 1,232 
 
Toto Ltd.
 patents

Years Active: 2004-2014

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Areas of Expertise:
Toilet
Lavatory
Faucet
Shower Head
Grab Bar
Bathtub
Water Closet
Spout
Shower Panel
Pedestal Sink
Handle
In-Wall Shower Nozzle
51 patents (USPTO):Explore Patents
1. D704316 - Toilet (2014-05-06),
2. D677770 - Lavatory (2013-03-12),
3. D677769 - Lavatory (2013-03-12),
4. D677768 - Lavatory (2013-03-12),
5. D670659 - Remote controller for toilet seat with bidet (2012-11-13),
6. D658746 - Grab bar (2012-05-01),
7. D658745 - Grab bar (2012-05-01),
8. D655788 - Faucet (2012-03-13),
9. D655787 - Faucet (2012-03-13),
10. D655396 - Faucet (2012-03-06),
11. D655395 - Faucet (2012-03-06),
12. D655394 - Faucet (2012-03-06),
13. D653304 - Shower head (2012-01-31),
14. D652892 - Shower head (2012-01-24),
15. D652482 - Shower head (2012-01-17),

Title: The Innovative Journey of Hajime Kakihana

Introduction: Hajime Kakihana, a prominent inventor based in Fukuoka, Japan, holds an impressive portfolio of 51 patents. His notable contributions to the field of sanitary products showcase his commitment to innovation and design excellence.

Latest Patents: Among his latest patents, Kakihana has developed pioneering designs for toilets and lavatories. These inventions emphasize functionality and user comfort, reflecting the high standards of quality and innovation synonymous with his employer, Toto Ltd.

Career Highlights: Over the course of his career, Kakihana has established himself as a key player in the industry. With a wealth of experience and a keen understanding of consumer needs, he has continuously pushed the boundaries of sanitary technology.

Collaborations: Collaborating with esteemed colleagues such as James Piatt and Mitsuya Obara, Kakihana has fostered a creative environment that encourages innovation. These partnerships have led to groundbreaking advancements in the products designed at Toto Ltd.

Conclusion: Hajime Kakihana's dedication to invention and design has made a significant impact on the sanitary industry. As he continues to innovate, his future work promises to further enhance the user experience in everyday essentials like toilets and lavatories.

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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