Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6958859 | Grating device with high diffraction efficiency | John Hoose, Robert Frankel, Evgeny Popov | 2005-10-25 |
| 4389094 | Process for casting on a support the faithfull reproduction of a mask pierced with periodically distributed slits | Jean-Louis A. Roumiguieres | 1983-06-21 |