Company Filing History:

18 out of 10,264

Sumitomo Electric Industries, Limited

patents

1 out of 1

Hokkaido Sumiden Precision Industries, Ltd.

patent

1 out of 27

Namiki Precision Jewel Co., Ltd.

patents

4. 1 out of 1,715

National Institute of Advanced Industrial Science and Technology

patents

5. 1 out of 553

Sumitomo Electric Hardmetal Corp.

patents

where one patent can have more than one assignee

Years Active: 1988-2014

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18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8920079 - Joined product (2014-12-30),

2. 6183846 - Coated hard metal material (2001-02-06),

3. 6077596 - Coated hard tool having multi-layer coating (2000-06-20),

4. 6057046 - Nitrogen-containing sintered alloy containing a hard phase (2000-05-02),

5. 6017172 - Ceramic insert for use with clamp type cutting tool (2000-01-25),

6. 5981049 - Coated tool and method of manufacturing the same (1999-11-09),

7. 5947651 - Indexable insert (1999-09-07),

8. 5939651 - Titanium-based alloy (1999-08-17),

9. 5871850 - Coated hard metal material (1999-02-16),

10. 5624766 - Cemented carbide and coated cemented carbide for cutting tool (1997-04-29),

11. 5603071 - Method of preparing cemented carbide or cermet alloy (1997-02-11),

12. 5577424 - Nitrogen-containing sintered hard alloy (1996-11-26),

13. 5403374 - Watch exterior parts and manufacturing method thereof (1995-04-04),

14. 5403373 - Hard sintered component and method of manufacturing such a component (1995-04-04),

15. 5354534 - Method for manufacturing sintered parts (1994-10-11),

Title: Nobuyuki Kitagawa: Innovator in Cutting Tool Technology

Introduction

Nobuyuki Kitagawa is a prominent inventor known for his significant contributions to cutting tool technology. He is based in Itami, Japan, and holds a total of 18 patents. His work focuses on enhancing the performance and durability of cutting tools through innovative materials and processes.

Latest Patents

Among his latest patents, Kitagawa has developed a joined product that is particularly suitable for high-speed cutting applications. This product is designed to maintain joint strength even at high temperatures that exceed the liquid phase of brazing fillers. The joined product consists of a cemented carbide sintered compact as the first material and either a cBN sintered compact or a diamond sintered compact as the second material. The joining process utilizes a joining material that remains solid below 1000°C and is executed through resistance heating and pressing at pressures ranging from 0.1 to 200 MPa. Additionally, he has created a coated hard metal material that excels in wear and chipping resistance, featuring a multi-layered hard coating on a base material of cemented carbide or cermet.

Career Highlights

Kitagawa has had a distinguished career, working with notable companies such as Sumitomo Electric Industries, Limited and Hokkaido Sumiden Precision Industries, Ltd. His expertise in materials science and engineering has led to advancements in cutting tool technology that are widely recognized in the industry.

Collaborations

Throughout his career, Kitagawa has collaborated with esteemed colleagues, including Toshio Nomura and Kazutaka Isobe. These partnerships have fostered innovation and contributed to the development of cutting-edge technologies in the field.

Conclusion

Nobuyuki Kitagawa's work in cutting tool technology exemplifies the impact of innovative thinking in engineering. His patents and collaborations continue to influence the industry, showcasing the importance of advancements in materials and processes.

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