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For the Inventor, By the Inventor

Kodaira, Japan

Shizuo Iwasaki

This inventor holds 13 USPTO granted patents. Top assignee: Bridgestone Corporation. Active years: 1989-2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shizuo Iwasaki. Retrieved from https://idiyas.com/inventor/shizuo-iwasaki

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

USPTO Granted Patents = 13

% Patents Active = 92.3

Average Co-Inventor Count = 1.9

ph-index = 5

Forward Citations = 65(Granted Patents)


Location History:

  • Tokyo, JP (1995 - 1996)
  • Kodaira, JP (1989 - 2002)
  • Fuchu, JP (2002 - 2008)

Company Filing History:

goldMedal13 out of 5,194 
 
Bridgestone Corporation
 patents

Years Active: 1989-2008

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13 patents (USPTO):Explore Patents
1. 7341083 - Pneumatic radial tire with tread having blocks provided with sipes (2008-03-11),
2. 6360799 - Pneumatic tire with sidewall reinforcing rubber and bead reinforcing layer of approximately circumferential cords (2002-03-26),
3. 6336486 - Pneumatic radical tire having cap base tread (2002-01-08),
4. 5529105 - Pneumatic tire including at least one tie-element layer with (1996-06-25),
5. 5427176 - Pneumatic tire including at least one tie-element layer with (1995-06-27),
6. 5291930 - Pneumatic radial tires including fiber/resin belt cords having (1994-03-08),
7. 5246051 - Pneumatic radial tires including belt cords with filament resin (1993-09-21),
8. 5115854 - Low rolling resistance pneumatic radial tires having an improved (1992-05-26),
9. 5016698 - Pneumatic radial tires with improved polyvinyl alcohol belt cords (1991-05-21),
10. 5005626 - Pneumatic radial tire having a folded belt including a polyvinyl alcohol (1991-04-09),
11. 4971127 - Pneumatic radial tires with a folded belt and high strength vinylon (1990-11-20),
12. 4934427 - Pneumatic tires (1990-06-19),
13. 4889174 - Pneumatic radial tires (1989-12-26),

Title: Innovations of Shizuo Iwasaki

Introduction

Shizuo Iwasaki is a prominent inventor based in Kodaira, Japan. He has made significant contributions to the field of tire technology, holding a total of 13 patents. His work has been instrumental in advancing the design and functionality of pneumatic tires.

Latest Patents

One of his latest patents is for a pneumatic radial tire with a tread featuring blocks equipped with sipes. This innovative design includes a longitudinal main groove and multiple subgrooves, enhancing the tire's performance. The blocks are engineered to provide varying rigidity, which improves the tire's response to steering angles. Another notable patent involves a pneumatic tire that incorporates sidewall reinforcing rubber and a bead reinforcing layer made of approximately circumferential cords. This design enhances the structural integrity of the tire, ensuring better performance and durability.

Career Highlights

Shizuo Iwasaki has dedicated his career to working with Bridgestone Corporation, a leading company in the tire manufacturing industry. His expertise in tire design has led to numerous advancements that benefit both consumers and the automotive industry.

Collaborations

Throughout his career, Iwasaki has collaborated with notable colleagues such as Kazuo Oshima and Norio Inada. These partnerships have fostered innovation and contributed to the development of cutting-edge tire technologies.

Conclusion

Shizuo Iwasaki's contributions to tire technology through his patents and collaborations have significantly impacted the industry. His innovative designs continue to enhance the performance and safety of pneumatic tires.

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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