HU

Haruyoshi Uchiyama

AC Ando Electric Co.: 15 patents #6 of 301Top 2%
NT NTT: 8 patents #658 of 4,871Top 15%
YE Yokogawa Electric: 2 patents #398 of 1,441Top 30%
YM Yokogawa Test & Measurement: 1 patents #18 of 33Top 55%
Overall (All Time): #268,488 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDate
12025530 Optical pulse tester Akira Takikawa, Shoichi Aoki, Katsushi Ota 2024-07-02
9255861 Method of measuring optical loss and apparatus for measuring optical loss Yousuke Harima 2016-02-09
6700655 Optical fiber characteristic measuring device Yoshiyuki Sakairi 2004-03-02
6366348 Optical fiber distortion measuring apparatus and optical fiber distortion measuring method Yasushi Sato, Toshio Kurashima 2002-04-02
6335788 Optical-fiber characteristics measuring apparatus Toshio Kurashima 2002-01-01
6055044 Apparatus for measuring characteristics of optical fiber Zhixien Lee 2000-04-25
5949533 Optical fiber distortion measurement device and method thereof Zhixien Lee 1999-09-07
5880824 Optical fiber strain measuring apparatus Zhixien Li, Yasushi Satoh, Toshio Kurashima 1999-03-09
5880463 Optical fiber strain-measuring apparatus 1999-03-09
5821426 Optical fiber strain measuring apparatus 1998-10-13
5781322 Method and apparatus for measuring the noise figure of an optical amplifier Zhixien Li, Kazuo Aida 1998-07-14
5777727 OTDR measurement device Yasushi Sato 1998-07-07
5581389 Light frequency control apparatus Tekken Lee, Nobunari Takeuchi, Kaoru Shimizu, Tsuneo Horiguchi, Yahei Koyamada 1996-12-03
5561551 Method and apparatus for determining noise factor of optical amplifier Takashi Iwasaki, Kazuo Aida, Yoshiaki Sato 1996-10-01
5500762 Light frequency control apparatus Tekken Lee, Nobunari Takeuchi, Kaoru Shimizu, Tsuneo Horiguchi, Yahei Koyamada 1996-03-19
5493110 Light frequency synthesizer Nobunari Takeuchi, Tekken Lee, Kaoru Shimizu, Tsuneo Horiguchi 1996-02-20
5438578 Light-frequency control apparatus Tekken Lee, Nobunari Takeuchi, Kaoru Shimizu, Tsuneo Horiguchi 1995-08-01