Issued Patents All Time
Showing 51–66 of 66 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6616344 | Interconnection system for optical networks | — | 2003-09-09 |
| 6021234 | Interconnection apparatus having an electrical or optical signal bus | — | 2000-02-01 |
| 5896474 | Optical network having protection configuration | Johannes Jacobus Gerardus Maria Van Der Tol | 1999-04-20 |
| 5886801 | Coupling arrangement for coupling optical connections | — | 1999-03-23 |
| 5761353 | Optical coupling device and optical switch for use in the coupling device | Johannes Jacobus Gerardus Maria Van Der Tol | 1998-06-02 |
| 5491763 | Optical hybrid with 3.times.3 coupling device | Johannes Jacobus Gerardus Maria Van Der Tol | 1996-02-13 |
| 5473463 | Optical hybrid | — | 1995-12-05 |
| 5457563 | Optical mixing device having one photodetector for a heterodyne receiver | — | 1995-10-10 |
| 5455671 | Optical circuit for a measuring system for measuring the reflection sensitivity of an optical transmission system | — | 1995-10-03 |
| 5396358 | Optical reflective star device | — | 1995-03-07 |
| 5327278 | Optical transmitting and receiving system having polarization diversity in each hybrid circuit | — | 1994-07-05 |
| 5315425 | Optical transmission network with frequency locking means | Johan P. Bekooij | 1994-05-24 |
| 5297223 | Transmission systems for polarization-independent transmission of signals | — | 1994-03-22 |
| 5295016 | Polarization insensitive amplification device | — | 1994-03-15 |
| 5293264 | Transmission system for the polarization-insensitive transmission of signals | — | 1994-03-08 |
| 5276749 | Optical reflective star device having one or more orthogonal polarization reflectors | — | 1994-01-04 |