Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12335384 | Encryption key generating device, encryption key generating program, and encryption key generating/erasing method | Mikio Fujiwara, Masahiro TAKEOKA | 2025-06-17 |
| 12058246 | Secret key sharing system and secret key sharing method | Hiroyuki Endo | 2024-08-06 |
| 11502831 | Transmitting device, receiving device, quantum key distribution method, and quantum key distribution program for quantum key distribution system | Ken-ichiro Yoshino, Mikio Fujiwara, Akihisa Tomita | 2022-11-15 |
| 10193874 | Communication system | Mikio Fujiwara | 2019-01-29 |
| 8509446 | Time-bin polarization format exchange technique for entangled optical source | Mikio Fujiwara, Morio Toyoshima, Akihisa Tomita, Yoshihiro Nambu, Ken-ichiro Yoshino | 2013-08-13 |
| 8048731 | Method for reducing low frequency noise of transistor | Mikio Fujiwara, Hiroshi Matsuo, Hirohisa Nagata | 2011-11-01 |
| 7403713 | Quantum source coding apparatus and quantum information communication system | Yasuyoshi Mitsumori, Atsushi Hasegawa, Masahiro TAKEOKA, John A. Vaccaro, Stephen Barnett +1 more | 2008-07-22 |
| 7176439 | Method for manufacturing photodetector for weak light | Mikio Fujiwara, Makoto Akiba | 2007-02-13 |
| 7115868 | Photodetector for weak light with UV transparent substrates | Mikio Fujiwara, Makoto Akiba | 2006-10-03 |
| 7078667 | Photo detector for weak light | Mikio Fujiwara, Makoto Akiba | 2006-07-18 |
| 7067790 | Photodetector for weak light having charge reset means | Mikio Fujiwara, Makoto Akiba | 2006-06-27 |
| 6319725 | Method for estimating composition of product obtained by liquefaction of coal | Ryoichi Yoshida, Tadashi Yoshida, Mitsuyoshi Yamamoto, Hiroshi Nagaishi | 2001-11-20 |
| 4773559 | Container for organism sample | Shinichiro Matsuda | 1988-09-27 |