Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4949007 | Low pressure discharge lamp with flat-plate terminal | Masami Takagi, Kenji Ohkubo | 1990-08-14 |
| 4906891 | Low-pressure discharge lamp and electrical base structure | Masami Takagi, Kenji Ohkubo | 1990-03-06 |
| 4882520 | Rare gas arc lamp having hot cathode | Masami Takagi | 1989-11-21 |
| 4794301 | Fluorescent lamp having a convoluted discharge passage and fluorescent lamp apparatus incorporating the same | Katsuhide Misono, Yuji Kawaguchi, Kazuhisa Ogishi, Taketo Kamei | 1988-12-27 |
| 4364617 | Method and apparatus for stabilizing the pressure of a gas in a closed body | Takeshi Moriwaki | 1982-12-21 |
| 4303290 | Method of evacuating a fluorescent lamp bulb | Makoto Hojo | 1981-12-01 |