| Number | Date | Country | Kind |
|---|---|---|---|
| 3093/94 | Oct 1994 | CHX |
| Number | Name | Date | Kind |
|---|---|---|---|
| 3226176 | Hindermann et al. | Dec 1965 | |
| 4325705 | Harms et al. | Apr 1982 | |
| 4355163 | von Oertzen et al. | Oct 1982 | |
| 4507236 | Seiler et al. | Mar 1985 | |
| 4631341 | Kayane et al. | Dec 1986 | |
| 4925927 | Tzikas | May 1990 | |
| 5410041 | M uller | Apr 1995 |
| Number | Date | Country |
|---|---|---|
| 74928 | Mar 1983 | EPX |
| 584045 | Feb 1994 | EPX |
| 1529645 | Oct 1978 | GBX |
| 2034731 | Jun 1980 | GBX |
| Entry |
|---|
| Chem. Abstracts, vol. 84, (18), abstract No. 123403a of JP 75-157422; Dec. 1975. |
| Derwent Abstract No. 85-300340/48 of JO208-366 A Oct. 19, 1985. |