| Number | Date | Country | Kind |
|---|---|---|---|
| 00 13240 | Oct 2000 | FR |
| Number | Name | Date | Kind |
|---|---|---|---|
| 3734874 | Kibler et al. | May 1973 | A |
| 4233196 | Sublett | Nov 1980 | A |
| 4304901 | O'Neill et al. | Dec 1981 | A |
| 4423031 | Murui et al. | Dec 1983 | A |
| 5261426 | Kellett et al. | Nov 1993 | A |
| 5534247 | Franjac et al. | Jul 1996 | A |
| 5993784 | Hill | Nov 1999 | A |
| Number | Date | Country |
|---|---|---|
| 1 504 440 | Dec 1967 | FR |
| WO 9830195 | Jul 1998 | WO |
| WO0033806 | Jun 2000 | WO |
| Entry |
|---|
| English language Derwent Abstract of FR 1 504 440, Dec. 8, 1967. |