Chiba, Japan

Haruki Hiranuma

This inventor holds 53 USPTO granted patents and 1 published patent application, primarily in Timepiece Technology (CPC class G04B). Top assignee: Seiko Instruments Inc. Active years: 1990-2017.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Haruki Hiranuma. Retrieved from https://idiyas.com/inventor/haruki-hiranuma

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

USPTO Granted Patents = 53 

% Patents Active = 88.7

Average Co-Inventor Count = 1.8

ph-index = 10

Forward Citations = 566(Granted Patents)

Forward Citations (Not Self Cited) = 545(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Tokyo, JP (1990)
  • Mihama-ku, JP (2012)
  • Chiba, JP (2003 - 2017)

Company Filing History:


Years Active: 1990-2017

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Areas of Expertise:
Timepiece
Portable Watch
Crown Locking Mechanism
Waterproof Components
Rotatable Bezel
Push Operation Member
Wristwatch Band
Watch Crown
Friction Ring
Crown Protection Device
Glass Holding Member
Watch Strap
53 patents (USPTO):Explore Patents

Title: Haruki Hiranuma: Revolutionizing Timepiece Technology

Introduction:

Throughout his illustrious career, Haruki Hiranuma has emerged as a renowned innovator in the field of timepiece technology. Hailing from Chiba, Japan, Hiranuma's exceptional ideas have not only pushed the boundaries of existing technologies but have also opened up new horizons in the industry. With 53 patents to his name, Hiranuma continues to make remarkable contributions to the field of horology. In this article, we delve into his latest patents, as well as explore his career highlights and collaborations.

Latest Patents:

Hiranuma's most recent patents showcase his dedication to enhancing the performance and functionality of timepieces. One of his latest inventions involves a stopper structure that prevents inadvertent rotation or rotation of the body within a timepiece's case. This innovation improves the weathering performance of the stopper mechanism, ensuring smooth operation of the timepiece. Additionally, Hiranuma has developed a timepiece with a highly effective waterproof mechanism. By incorporating a specially designed packing and contact surfaces, this invention allows for easy and secure rotation of the timepiece's operation member while maintaining exceptional waterproof performance.

Career Highlights:

Throughout his accomplished career, Hiranuma has achieved numerous milestones and garnered recognition for his groundbreaking contributions. Working at Seiko Instruments Inc., a prominent name in the industry, Hiranuma has had the opportunity to showcase his inventive prowess in a highly influential setting. His dedication to pushing the boundaries of timepiece technology has earned him respect and admiration from colleagues and industry experts alike.

Collaborations:

Collaboration plays a vital role in fostering innovation, and Hiranuma has been fortunate to work alongside notable individuals within the industry. One of his fellow innovators is Nobukazu Omori, a respected figure known for his contributions to watch mechanisms. Their collaboration has undoubtedly fueled creative synergy, leading to the development of cutting-edge timepiece technologies.

Furthermore, Hiranuma has worked closely with Kazutaka Imai, another talented individual in the field. Together, they have combined their expertise and passion to transform the way timepieces are designed and operated. These fruitful collaborations exemplify Hiranuma's commitment to seeking out fresh perspectives and embracing teamwork to drive innovation.

Conclusion:

Haruki Hiranuma's remarkable achievements and inventive spirit have positioned him as a trailblazer in the realm of timepiece technology. With an impressive portfolio of 53 patents and his work at Seiko Instruments Inc., Hiranuma continues to shape the future of timekeeping. Through his latest patents and collaborative efforts, he stands as an exemplar of innovative thinking and dedication to refining timepiece technologies for the benefit of the industry as a whole. As Hiranuma's career progresses, we eagerly anticipate further groundbreaking advancements in the realm of timepieces.

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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