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For the Inventor, By the Inventor

Nara, Japan

Tsutomu Yamaguchi

USPTO Granted Patents = 25

Average Co-Inventor Count = 4.4

ph-index = 5

Forward Citations = 153(Granted Patents)


Location History:

  • Moriguchi, JP (1996)
  • Ota, JP (2006)
  • Nara, JP (2001 - 2012)

Company Filing History:

goldMedal25 out of 8,776 
 
Sanyo Electric Co., Ltd.
 patents

Years Active: 1996-2012

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25 patents (USPTO):
1. 8258048 - Semiconductor laser device and method of fabricating the same (2012-09-04),
2. 7961768 - Integrated semiconductor laser device and method of fabricating the same (2011-06-14),
3. 7807490 - Manufacturing method of nitride semiconductor device and nitride semiconductor device (2010-10-05),
4. 7773654 - Semiconductor laser apparatus and fabrication method thereof (2010-08-10),
5. 7769069 - Integrated semiconductor laser diode module and manufacturing method of the same (2010-08-03),
6. 7655484 - Nitride-based semiconductor device and method of fabricating the same (2010-02-02),
7. 7629623 - Nitride-based semiconductor device and method of fabricating the same (2009-12-08),
8. 7589357 - Semiconductor device and method of fabricating the same (2009-09-15),
9. 7567605 - Semiconductor laser device and method of fabricating the same (2009-07-28),
10. 7512167 - Integrated semiconductor laser device and method of fabricating the same (2009-03-31),
11. 7485902 - Nitride-based semiconductor light-emitting device (2009-02-03),
12. 7405096 - Manufacturing method of nitride semiconductor device and nitride semiconductor device (2008-07-29),
13. 7372077 - Semiconductor device (2008-05-13),
14. 7279344 - Method of forming a nitride-based semiconductor (2007-10-09),
15. 7109530 - Nitride-based semiconductor element (2006-09-19),

Title: Tsutomu Yamaguchi: Innovator in Semiconductor Technology

Introduction: Tsutomu Yamaguchi, based in Nara, Japan, is a prominent inventor known for his significant contributions to the field of semiconductor technology. With a remarkable portfolio of 25 patents, Yamaguchi has made substantial advancements that have helped shape modern electronics.

Latest Patents: His latest patents include a semiconductor laser device capable of reducing the threshold current and improving luminous efficiency. This innovative device features a semiconductor substrate with a principal surface, onto which a semiconductor element layer is formed, having a principal surface substantially inclined to enhance performance. Furthermore, Yamaguchi has developed an integrated semiconductor laser device designed to improve laser beam properties while simultaneously reducing costs for optical axis adjustments. This ingenious design consists of two semiconductor laser elements that fit together through complementary projecting and recess portions, showcasing his creative approach to engineering challenges.

Career Highlights: Yamaguchi is currently employed at Sanyo Electric Co., Ltd., where he has been instrumental in advancing the company’s innovations in semiconductor devices. His expertise and patents have positioned him as a leading figure in this competitive industry.

Collaborations: Throughout his career, Yamaguchi has collaborated with esteemed colleagues like Masayuki Hata and Yasuhiko Nomura. These partnerships have fostered a robust environment for innovation and development within their field, further enhancing the impact of their collective efforts.

Conclusion: Tsutomu Yamaguchi stands out as a pioneering inventor whose work in semiconductor technology continues to influence the electronics industry. His prolific patent portfolio and collaborations highlight his commitment to innovation and excellence in his craft.

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