Makinohara, Japan

Kazuhito Sakai

This inventor holds 17 USPTO granted patents and 11 EPO patents. Top assignee: Toyota Jidosha Kabushiki Kaisha. Active years: 2009-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuhito Sakai. Retrieved from https://idiyas.com/inventor/kazuhito-sakai

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


% Patents Active = 47.1

 

Average Co-Inventor Count = 2.7

ph-index = 3

Forward Citations = 32(Granted Patents)


Location History:

  • Makinohara, JP (2009 - 2017)
  • Mishima, JP (2009 - 2023)

Company Filing History:


Years Active: 2009-2026

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17 patents (USPTO):Explore Patents

Title: Kazuhito Sakai: Innovator in Engine Technology

Introduction

Kazuhito Sakai is a prominent inventor based in Makinohara, Japan. He has made significant contributions to the field of engine technology, holding a total of 17 patents. His innovative designs focus on improving the efficiency and performance of internal combustion engines.

Latest Patents

One of Sakai's latest patents is a crankshaft designed to effectively dampen vibrations without altering the crankcase's design. This crankshaft features a first crank section at one end and a second crank section at the opposite end. In the first crank section, the mass of the inner balance weight exceeds that of the outer balance weight. Similarly, in the second crank section, the inner balance weight is greater than the outer balance weight. Another notable invention is an internal combustion engine equipped with a variable-compression-ratio mechanism. This mechanism allows for a variable mechanical compression ratio and includes a drive device that changes the combustion chamber's volume when the piston reaches top dead center. The drive device incorporates a reverse input blocking clutch to manage the rotational force of a rotator.

Career Highlights

Kazuhito Sakai has worked with notable companies such as Toyota Motor Corporation and Nippon Soken, Inc. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in engine technology.

Collaborations

Throughout his career, Sakai has collaborated with esteemed colleagues, including Toshiaki Asada and Makoto Ishikawa. These partnerships have fostered a creative environment that has led to the development of several impactful inventions.

Conclusion

Kazuhito Sakai's work in engine technology exemplifies the spirit of innovation. His patents reflect a commitment to enhancing engine performance and efficiency. His contributions continue to influence the automotive industry and inspire future inventors.

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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