Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5210301 | Squarium compounds, process for preparing the same and electrophotographic photoreceptors containing the same | Satoshi Saeki, Kaoru Torikoshi, Hiroyuki Tanaka, Lyong-Sun Pu | 1993-05-11 |
| 5055615 | Novel Squarium compounds, a process for preparing them and electrophotographic photoreceptors containing them | Hiroyuki Tanaka, Satoshi Saeki, Kaoru Torikoshi, Lyong-Sun Pu | 1991-10-08 |
| 4908289 | Photoreceptor for electrophotography | Hiroyuki Tanaka, Lyong-Sun Pu | 1990-03-13 |
| 4752650 | Photoreceptor for electrophotography | Hiroyuki Tanaka, Lyong-Sun Pu | 1988-06-21 |
| 4707427 | Squarylium compound in an electrophotographic element | Hiroyuki Tanaka, Lyong-Sun Pu | 1987-11-17 |
| 4700001 | Novel squarylium compound and photoreceptor containing same | Hiroyuki Tanaka, Lyong-Sun Pu | 1987-10-13 |
| 4626485 | Substituted squarium compounds, process for preparing the same and electrophotographic photoreceptors containing the same | Hiroyuki Tanaka, Satoshi Saeki, Kaoru Torikoshi, Lyong-Sun Pu | 1986-12-02 |