| Number | Date | Country | Kind |
|---|---|---|---|
| 2-322868 | Nov 1990 | JPX |
| Number | Name | Date | Kind |
|---|---|---|---|
| 3510210 | Haney | Dec 1967 | |
| 3747087 | Harrison, III et al. | Jul 1973 | |
| 4952051 | Lovell et al. | Aug 1990 | |
| 5111409 | Gasper et al. | May 1992 |
| Entry |
|---|
| "Computer Animation '91", N. Thalmann, et al., Springer-Velag Tokyo 1991, pp. 76-88. |
| "A Simple Method for Extracting the Natural Beauty of Hair", K. Anjyo, et al., Hitachi, Ltd., Computer Graphics 26, 2, Jul. 1992, pp. 111-120. |