Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5422975 | Optical filter doped with rare earth elements and used with optical fibers | Hiroo Kanamori, Akira Urano, Izumi Sankawa | 1995-06-06 |
TK
Tomonori Kashiwara
NTT: 1 patents #2,911 of 4,871Top 60%
Overall (All Time): #3,772,617 of 4,157,543Top 95%
1
Patents All Time