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For the Inventor, By the Inventor

Tsukuba, Japan

Toshiya Yamamoto

USPTO Granted Patents = 17

Average Co-Inventor Count = 4.3

ph-index = 3

Forward Citations = 42(Granted Patents)


Location History:

  • Kanagawa, JP (2001 - 2004)
  • Hiratsuka, JP (1999 - 2011)
  • Tomioka, JP (2014)
  • Tsukuba, JP (2012 - 2021)

Company Filing History:

goldMedal12 out of 370 
 
Tanaka Kikinzoku Kogyo K.k.
 patents
silverMedal4 out of 264 
 
Mabuchi Motor Co., Ltd.
 patents
bronzeMedal3 out of 984 
 
Tohoku University
 patents
4. 3 out of 5 
 
Tanaka Holdings Co., Ltd
 patents
5. 2 out of 832,843 
Other
 patents
where one patent can have more than one assignee

Years Active: 1999-2021

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17 patents (USPTO):Explore Patents
1. 11072851 - Sputtering target (2021-07-27),
2. 10971181 - Sputtering target for magnetic recording media (2021-04-06),
3. 10636633 - Sputtering target and process for production thereof (2020-04-28),
4. 8999227 - Method for producing regenerated target (2015-04-07),
5. 8641834 - Method for manufacturing electric contact material, electric contact material, and thermal fuse (2014-02-04),
6. 8460602 - Method for producing regenerated target (2013-06-11),
7. 8366800 - Method for recovering metal from target and method for manufacturing target (2013-02-05),
8. 8287804 - Method for recovering metal from target and method for manufacturing target (2012-10-16),
9. 7876017 - Commutator and brush materials for small electric motor, clad composite material, and small electric DC motor using the same (2011-01-25),
10. 7160632 - Material for sliding contacts, clad composite material and small-sized DC motor using the same (2007-01-09),
11. 6791045 - Shielded-type automotive relay controlling a magnet clutch load of a vehicle air-conditioner (2004-09-14),
12. 6746551 - Make break contact material comprising ag-ni based alloy having ni metal particles dispersed and relay using the same (2004-06-08),
13. 6638334 - Sliding contact material comprising Ag-Ni based alloy having Ni metal particles dispersed and clad composite material, and Dc compact motor using the same (2003-10-28),
14. 6432157 - Method for preparing Ag-ZnO electric contact material and electric contact material produced thereby (2002-08-13),
15. 6245166 - Material for sliding contact, composite clad material, and small-sized direct current motor using the same (2001-06-12),

Title: Toshiya Yamamoto: Innovator in Sputtering Technology

Introduction

Toshiya Yamamoto is a prominent inventor based in Tsukuba, Japan. He has made significant contributions to the field of sputtering technology, holding a total of 17 patents. His work focuses on developing advanced materials for magnetic thin films, which are essential in various electronic applications.

Latest Patents

Yamamoto's latest patents include a sputtering target designed to form magnetic thin films with high coercive force (Hc). This innovative sputtering target contains metallic cobalt (Co), metallic platinum (Pt), and an oxide, while excluding metallic chromium (Cr) except for inevitable impurities. The oxide used has a composition of BO and comprises 10 to 50 vol % of the sputtering target. Another notable patent is for a sputtering target specifically for magnetic recording media. This target enables the production of magnetic thin films with micronized magnetic crystal grains, maintaining excellent magnetic properties. The composition includes metallic Pt and an oxide, with Co ranging from 70 at % to 90 at % and Pt from 10 at % to 30 at % relative to the total metallic components. The oxide is contained in a range of 26 vol % to 40 vol % and consists of BO and one or more high-melting-point oxides.

Career Highlights

Throughout his career, Toshiya Yamamoto has worked with notable companies such as Tanaka Kikinzoku Kogyo K.K. and Mabuchi Motor Co., Ltd. His expertise in sputtering technology has positioned him as a key figure in the development of materials for magnetic applications.

Collaborations

Yamamoto has collaborated with esteemed colleagues, including Takao Asada and Keiji Nakamura. Their combined efforts have contributed to advancements in the field of sputtering technology.

Conclusion

Toshiya Yamamoto's innovative work in sputtering technology and his numerous patents highlight his significant impact on the industry. His contributions continue to influence the development of advanced materials for electronic applications.

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