| Number | Date | Country | Kind |
|---|---|---|---|
| 6-045897 | Mar 1994 | JPX |
| Number | Name | Date | Kind |
|---|---|---|---|
| 4096523 | Belmares-Sarabia et al. | Jun 1978 | |
| 4831437 | Nishioka et al. | May 1989 | |
| 5208903 | Curry | May 1993 | |
| 5369733 | Arimoto et al. | Nov 1994 | |
| 5459589 | Ohnishi et al. | Oct 1995 | |
| 5493408 | Kurogane et al. | Feb 1996 |
| Number | Date | Country |
|---|---|---|
| WO8201083 | Apr 1982 | WOX |
| Entry |
|---|
| Daniel Smith, "Closing the Color Loop", Umiach Catalog V128 N39, 26c-27c, Aug. 30, 1995. |