logo

For the Inventor, By the Inventor

Chichibu, Japan

Masao Iwata

This inventor holds 7 USPTO granted patents. Top assignee: Hitachi Metals, Ltd.. Active years: 1976-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masao Iwata. Retrieved from https://idiyas.com/inventor/masao-iwata-yi5n57p8

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

Calculating rank
USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 5

Forward Citations = 54(Granted Patents)


Location History:

  • Chichibu, JA (1976 - 1978)
  • Chichibu, JP (1980 - 1991)
  • Saitama, JP (1998)

Company Filing History:

goldMedal7 out of 2,333 
 
Hitachi Metals, Ltd.
 patents

Years Active: 1976-1998

Loading Chart...
7 patents (USPTO):Explore Patents
1. 5800728 - Permanent magnetic material made of iron-rare earth metal alloy (1998-09-01),
2. 4989885 - Magnetic fluid retainer, and shaft sealer employing same (1991-02-05),
3. 4305764 - Method of producing Fe/Cr/Co permanent magnet alloy (1981-12-15),
4. 4194932 - Fe/Cr/Co Permanent magnetic alloys and method of production thereof (1980-03-25),
5. 4093477 - Anisotropic permanent magnet alloy and a process for the production (1978-06-06),
6. 3989556 - Semihard magnetic alloy and a process for the production thereof (1976-11-02),
7. 3982972 - Semihard magnetic alloy and a process for the production thereof (1976-09-28),

Title: The Innovative Contributions of Masao Iwata

Introduction

Masao Iwata is a prominent inventor based in Chichibu, Japan. He has made significant contributions to the field of materials science, particularly in the development of magnetic materials. With a total of 7 patents to his name, Iwata's work has had a substantial impact on various technological applications.

Latest Patents

Iwata's latest patents include a permanent magnetic material made of iron-rare earth metal alloy. This invention features an iron-based alloy with a body-centered tetragonal structure, which enhances its magnetic properties. Another notable patent is for a magnetic fluid retainer and shaft sealer. This apparatus is designed to seal a magnetic shaft using a magnetic housing and a pair of annular disk-shaped yokes, effectively utilizing magnetic fluid to maintain a secure seal.

Career Highlights

Iwata is currently employed at Hitachi Metals, Ltd., where he continues to innovate and develop new technologies. His work at this esteemed company has allowed him to collaborate with other talented professionals in the field.

Collaborations

Some of Iwata's notable coworkers include Yoichi Ishijima and Hisao Yoshizawa. Their collaborative efforts have contributed to advancements in magnetic materials and related technologies.

Conclusion

Masao Iwata's contributions to the field of materials science, particularly in magnetic materials, highlight his innovative spirit and dedication to advancing technology. His patents reflect a commitment to solving complex engineering challenges and improving industrial applications.

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]
Loading…