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For the Inventor, By the Inventor

Tokyo, Japan

Toshiyuki Kajiwara

This inventor holds 46 USPTO granted patents and 1 published patent application, primarily in Rolling Mill Technology. Top assignees: Hitachi, Ltd., Nippon Steel Corporation, Nisshin Steel Co., Ltd.. Active years: 1976-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshiyuki Kajiwara. Retrieved from https://idiyas.com/inventor/toshiyuki-kajiwara

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

USPTO Granted Patents = 46 

% Patents Active = 100.0

Average Co-Inventor Count = 3.4

ph-index = 13

Forward Citations = 418(Granted Patents)


Location History:

  • Hitachi, JA (1976 - 1977)
  • Hitachi, JP (1978 - 1997)
  • Tokyo, JP (1993 - 2001)
  • Katsushika-ku, JP (1996 - 2003)

Company Filing History:

goldMedal46 out of 42,740 
 
Hitachi, Ltd.
 patents
silverMedal1 out of 3,721 
 
Nippon Steel Corporation
 patents
bronzeMedal1 out of 342 
 
Nisshin Steel Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1976-2003

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Areas of Expertise:
Rolling Mill
Hot Rolling System
Metal Bonding
Shape Control
Continuous Casting
Strip Wiping
Cross Rolling
Multihigh Rolling
Coating Equipment
Work Rolls
Rolling Method
Steel Processing
46 patents (USPTO):Explore Patents
1. 6581429 - Strip wiper device, strip wiping method, rolling mill and rolling method (2003-06-24),
2. 6286354 - Rolling mill and rolling method and rolling equipment (2001-09-11),
3. 6213381 - Method of bonding metal plates, apparatus therefor and hot strip mill (2001-04-10),
4. 6116073 - Cluster type multi-roll rolling mill and rolling method (2000-09-12),
5. 6076388 - Rolling mill, hot rolling system, rolling method and rolling mill (2000-06-20),
6. 5934130 - Rolling mill drive apparatus, rolling mill and rolling method (1999-08-10),
7. 5884832 - Method of bonding metal plates, apparatus therefor and hot strip mill (1999-03-23),
8. 5768927 - Rolling mill, hot rolling system, rolling method and rolling mill (1998-06-23),
9. 5692407 - Shape control in a strip rolling mill of cluster type (1997-12-02),
10. 5666837 - Rolling mill and method of using the same (1997-09-16),
11. 5653137 - Five-high rolling mill (1997-08-05),
12. 5651411 - Apparatus for and method of continuous casting (1997-07-29),
13. 5636543 - Hot steel plate rolling mill system and rolling method (1997-06-10),
14. 5634510 - Integrated manufacturing system (1997-06-03),
15. 5634257 - Hot strip rolling plant and method directly combined with continuous (1997-06-03),

Title: The Innovative Contributions of Toshiyuki Kajiwara in Tokyo

Introduction

Toshiyuki Kajiwara is a prominent inventor based in Tokyo, Japan, known for his significant contributions to the field of cold rolling technology. With a remarkable portfolio of 46 patents, Kajiwara has continually pushed the boundaries of innovation in manufacturing, particularly in enhancing productivity and efficiency.

Latest Patents

Among his latest patents are the strip wiper device and method, as well as innovations related to rolling mills and rolling methods. The strip wiper device is designed to improve the productivity of cold rolling facilities by effectively removing dust and foreign matter during high-speed rolling operations. This device utilizes a two-pocket type static pressure bearing to float and support the wiper roll, which allows for variable adjustment of the load range depending on the plate width. This improvement is crucial for high-speed rolling operations exceeding 700 m/min, which conventional roll or tube wipers could not manage. Furthermore, Kajiwara's advancements in rolling mills involve innovative configurations that allow for superior rolling efficiency, maintenance ease, and prevention of strip walking and curving.

Career Highlights

Kajiwara's career has been marked by significant technical achievements while working with esteemed companies such as Hitachi, Ltd. and Nisshin Steel Co., Ltd. His work in these organizations has led to the development of cutting-edge solutions for challenges faced in the manufacturing process of cold rolling.

Collaborations

Throughout his career, Toshiyuki Kajiwara has collaborated with notable coworkers, including Yoshio Takakura and Yasutsugu Yoshimura. Their joint efforts have contributed to the advancements and successful implementation of various patented technologies within the industry.

Conclusion

Toshiyuki Kajiwara’s dedication to innovation and improvement in cold rolling technology has made a lasting impact on the manufacturing sector. His extensive patent portfolio not only highlights his inventive spirit but also serves as a testament to his commitment to enhancing productivity and surface quality in manufacturing processes. As technology continues to evolve, Kajiwara's developments are expected to remain influential 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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