| Number | Name | Date | Kind |
|---|---|---|---|
| D179853 | Kelly | Mar 1957 | |
| D287347 | Grun | Dec 1986 | |
| D327233 | McClellan | Jun 1992 | |
| D336061 | Kraselsky et al. | Jun 1993 | |
| 2773175 | Levy et al. | Dec 1956 | |
| 3638709 | Brown, Jr. et al. | Feb 1972 | |
| 3886248 | Nicholson | May 1975 | |
| 4582498 | Tamada | Apr 1986 | |
| 5329714 | Lee | Jul 1994 |
| Entry |
|---|
| Laponite Brochure, Laporte Industries Ltd. |