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For the Inventor, By the Inventor

Naka, Japan

Makoto Igarashi

USPTO Granted Patents = 11

 

Average Co-Inventor Count = 2.2

ph-index = 1

Forward Citations = 3(Granted Patents)


Location History:

  • Naka-gun, JP (2014)
  • Naka, JP (2014 - 2022)

Company Filing History:

goldMedal11 out of 1,530 
 
Mitsubishi Materials Corporation
 patents

Years Active: 2014-2024

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11 patents (USPTO):Explore Patents
1. 12109625 - Surface-coated TiN-based cermet cutting tool in which hard coating layer exhibits excellent chipping resistance (2024-10-08),
2. 11389878 - TiN-based sintered body and cutting tool made of TiN-based sintered body (2022-07-19),
3. 10773307 - Composite sintered body cutting tool (2020-09-15),
4. 10661345 - Composite part and cutting tool (2020-05-26),
5. 10569338 - Composite sintered body cutting tool and surface coated composite sintered body cutting tool (2020-02-25),
6. 10286454 - Composite part and cutting tool (2019-05-14),
7. 10252379 - Brazing material for bonding; and composite part and cutting tool using same (2019-04-09),
8. 10076789 - Surface-coated titanium carbonitride-based cermet cutting tool having excellent chipping resistance (2018-09-18),
9. 9452478 - Surface-coated cutting tool having therein hard coating layer capable of exhibiting excellent chipping resistance during high-speed intermittent cutting work (2016-09-27),
10. 8828527 - Surface-coated cutting tool (2014-09-09),
11. 8758907 - Surface coated cutting tool with excellent chipping resistance (2014-06-24),

Title: Makoto Igarashi: Innovator in Cutting Tool Technology

Introduction

Makoto Igarashi is a prominent inventor based in Naka, Japan. He has made significant contributions to the field of cutting tool technology, holding a total of 11 patents. His work focuses on enhancing the performance and durability of cutting tools through innovative materials and designs.

Latest Patents

Igarashi's latest patents include a surface-coated TiN-based cermet cutting tool that exhibits excellent chipping resistance. This cutting tool utilizes a TiN-based cermet containing a TiN phase as a hard phase component. A hard coating layer, which includes a titanium carbonitride layer and an aluminum oxide layer, is formed on the surface. The linear expansion coefficient of the TiN-based cermet is set to 9.0×10(/K) or more, with a thermal conductivity of 30 (W/m·K) or more. The residual compressive stress of the hard coating layer is maintained between 600 to 2,000 MPa, even in an as-deposited state, by adjusting the component composition of the TiN-based cermet.

Another notable patent involves a TiN-based sintered body and a cutting tool made from this sintered body. This invention features 70 to 94 area % of a TiN phase and 1 to 25 area % of a MoC phase, with the remainder consisting of a binder phase. The binder phase contains iron and nickel, with a total area ratio of 5 to 15 area %. The lattice constant of the TiN is measured between 4.235 to 4.245 Å, while that of the iron-nickel phase is between 3.58 to 3.62 Å.

Career Highlights

Makoto Igarashi is currently employed at Mitsubishi Materials Corporation, where he continues to develop cutting-edge technologies in the field of materials science. His innovative approaches have positioned him as a key figure in the advancement of cutting tool technology.

Collaborations

Igarashi has collaborated with notable colleagues, including Akira Osada and Kazutaka Fujiwara. Their combined expertise has contributed to the successful development of various cutting tools and materials.

Conclusion

Makoto Igarashi's contributions to cutting tool technology through his innovative patents and collaborations highlight his

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