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For the Inventor, By the Inventor

Kamakura, Japan

Kazuroh Iwata

This inventor holds 8 USPTO granted patents. Top assignee: Nissan Motor Company Limited. Active years: 1983-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuroh Iwata. Retrieved from https://idiyas.com/inventor/kazuroh-iwata

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

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 2.5

ph-index = 5

Forward Citations = 100(Granted Patents)


Location History:

  • Yokohama, JP (1983)
  • Kamakura, JP (1983 - 1985)
  • Zushi, JP (1986)
  • Kanagawa, JP (1990)

Company Filing History:

goldMedal8 out of 13,420 
 
Nissan Motor Company Limited
 patents

Years Active: 1983-1990

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8 patents (USPTO):Explore Patents
1. 4932726 - Anti-skid brake control system with vehicle speed dependent variable (1990-06-12),
2. 4568067 - Strut suspension for an automotive vehicle (1986-02-04),
3. 4502575 - Shock absorber (1985-03-05),
4. 4475635 - Vortex flow shock absorber with one-way valve (1984-10-09),
5. 4457409 - Vortex shock absorber with absorbing force relief means (1984-07-03),
6. 4442925 - Vortex flow hydraulic shock absorber (1984-04-17),
7. 4418802 - Shock absorber (1983-12-06),
8. 4407397 - Shock absorber with pressure-relief mechanism (1983-10-04),

Title: Kazuroh Iwata: Innovator in Automotive Technology

Introduction

Kazuroh Iwata is a prominent inventor based in Kamakura, Japan. He has made significant contributions to the automotive industry, particularly in the field of braking systems and vehicle suspensions. With a total of 8 patents to his name, Iwata's innovations have enhanced vehicle safety and performance.

Latest Patents

One of Iwata's latest patents is an anti-skid brake control system with vehicle speed dependent variable. This system optimizes vehicular braking characteristics to minimize braking distance. It features a wheel slippage threshold that is derived based on vehicle speed. The system compares this threshold with actual wheel slippage detected from vehicle and wheel speeds. When detected wheel slippage exceeds the threshold, brake pressure in the wheel cylinder is reduced, enhancing safety during braking.

Another notable patent is a shock-absorbing strut suspension for automotive vehicles. This design incorporates a disc spring between the strut and the vehicle body. The disc spring is pre-loaded during assembly, allowing it to absorb small-amplitude vibrations while effectively transmitting larger-amplitude vibrations. This innovation augments the effect of elastic dampers, which are designed to absorb high-frequency, low-amplitude vibrations.

Career Highlights

Kazuroh Iwata is currently employed at Nissan Motor Company Limited, where he continues to develop cutting-edge automotive technologies. His work has significantly impacted the design and functionality of modern vehicles, making them safer and more efficient.

Collaborations

Iwata has collaborated with notable colleagues in the industry, including Kunihiko Hidaka and Naoto Fukushima. Their combined expertise has contributed to the advancement of automotive innovations at Nissan.

Conclusion

Kazuroh Iwata's contributions to automotive technology through his patents and collaborations have made a lasting impact on vehicle safety and performance. His innovative spirit continues to drive advancements in the industry.

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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