Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6534917 | Mercury-filled discharge lamp with stabilized light intensity | — | 2003-03-18 |
| 6459202 | Discharge lamp with electrode fitting structure | Shigehisa Hagi | 2002-10-01 |
| 5663607 | Discharge lamp lead support | Takanori Serizawa | 1997-09-02 |
| 5627430 | Discharge lamp having a cathode with a sintered tip insert | Takanori Serizawa, Koichi Ario | 1997-05-06 |
| 4732842 | Exposure method of semiconductor wafer by rare gas-mercury discharge lamp | — | 1988-03-22 |
| 4606997 | Exposure method of semiconductor wafer by mercury-vapor lamp | — | 1986-08-19 |
| 4605301 | Exposure method of semiconductor wafer by mercury-vapor lamp | — | 1986-08-12 |
| 4190786 | Discharge lamp | — | 1980-02-26 |