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For the Inventor, By the Inventor

Hamamatsu, Japan

Masami Yamada

USPTO Granted Patents = 12

Average Co-Inventor Count = 4.4

ph-index = 7

Forward Citations = 103(Granted Patents)


Company Filing History:

goldMedal12 out of 2,921 
 
Hamamatsu-photonics K.k.
 patents

Years Active: 1994-2008

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12 patents (USPTO):Explore Patents
1. 7365356 - Photocathode (2008-04-29),
2. 6903363 - Photocathode (2005-06-07),
3. 6002141 - Method of using photocathode and method of using electron tube (1999-12-14),
4. 5986387 - Transmission type electron multiplier and electron tube provided (1999-11-16),
5. 5982094 - Electron tube with polycrystalline diamond photocathode (1999-11-09),
6. 5959400 - Electron tube having a diamond field emitter (1999-09-28),
7. 5747826 - Photoemitter electron tube, and photodetector (1998-05-05),
8. 5710435 - Photomultiplier having a photocathode comprised of semiconductor material (1998-01-20),
9. 5680007 - Photomultiplier having a photocathode comprised of a compound (1997-10-21),
10. 5591986 - Photoemitter electron tube and photodetector (1997-01-07),
11. 5471051 - Photocathode capable of detecting position of incident light in one or (1995-11-28),
12. 5336902 - Semiconductor photo-electron-emitting device (1994-08-09),

Title: Masami Yamada: Innovator in Photocathode Technology

Introduction

Masami Yamada is a prominent inventor based in Hamamatsu, Japan. He has made significant contributions to the field of photocathode technology, holding a total of 12 patents. His work focuses on improving the performance and efficiency of photocathodes, which are essential components in various electronic devices.

Latest Patents

One of Yamada's latest inventions is a photocathode designed to suppress the decrease in radiant sensitivity at low temperatures, thereby enhancing the signal-to-noise (S/N) ratio. This innovative photocathode features a light-absorbing layer formed on a substrate, with an electron-emitting layer above it. Additionally, a striped-shaped contact layer is created on the electron-emitting layer, topped with a metal surface electrode. The spacing between the bars in the contact layer is meticulously adjusted to be between 0.2 μm and 2 μm, optimizing its performance.

Career Highlights

Yamada has dedicated his career to advancing photocathode technology. His work at Hamamatsu Photonics K.K. has positioned him as a leader in this specialized field. His inventions have not only contributed to the company's success but have also had a lasting impact on the industry.

Collaborations

Throughout his career, Yamada has collaborated with notable colleagues, including Toru Hirohata and Minoru Niigaki. These partnerships have fostered innovation and have been instrumental in the development of cutting-edge technologies in photocathodes.

Conclusion

Masami Yamada's contributions to photocathode technology exemplify his dedication to innovation and excellence. His patents and collaborative efforts continue to shape the future of electronic devices, making him a key figure in the field.

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