Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11502831 | Transmitting device, receiving device, quantum key distribution method, and quantum key distribution program for quantum key distribution system | Ken-ichiro Yoshino, Mikio Fujiwara, Masahide Sasaki | 2022-11-15 |
| 11362817 | Quantum cryptographic key output apparatus, quantum cryptographic key communication system, and quantum cryptographic key output method | Kensuke Nakata | 2022-06-14 |
| 11057201 | Random number sequence generation apparatus, quantum encryption transmitter, and quantum encryption communication system | Kensuke Nakata | 2021-07-06 |
| 8509446 | Time-bin polarization format exchange technique for entangled optical source | Mikio Fujiwara, Morio Toyoshima, Masahide Sasaki, Yoshihiro Nambu, Ken-ichiro Yoshino | 2013-08-13 |
| 7974540 | Communication system and communication method using the same | Kazuo Nakamura, Akio Tajima, Akihiro Tanaka, Yoshihiro Nanbu, Shuuji Suzuki +3 more | 2011-07-05 |
| 7583438 | Quantum circuit and quantum computer | — | 2009-09-01 |
| 6895092 | Cryptographic key distribution method and apparatus thereof | — | 2005-05-17 |
| 6678379 | Quantum key distribution method and apparatus | Dominic Mayers, Yoshie Kohno, Yoshihiro Nambu | 2004-01-13 |
| 6665486 | Single photon generating apparatus | — | 2003-12-16 |
| 6444999 | Quantum circuit | — | 2002-09-03 |
| 6014394 | Semiconductor laser | — | 2000-01-11 |
| 5859865 | Semiconductor laser | — | 1999-01-12 |
| 5642372 | Quantum-well type semiconductor laser device having multi-layered quantum-well layer | — | 1997-06-24 |
| 5559820 | Multiple quantum well semiconductor laser | Akitaka Kimura, Masaaki Nido, Akira Suzuki | 1996-09-24 |
| 5351254 | Semiconductor laser | — | 1994-09-27 |
| 4982255 | Avalanche photodiode | — | 1991-01-01 |