| Number | Name | Date | Kind |
|---|---|---|---|
| 4029502 | Goffe | Jun 1977 | |
| 4065307 | Goffe | Dec 1977 | |
| 4084966 | Haas et al. | Apr 1978 | |
| 4101321 | LevY | Jul 1978 | |
| 4241156 | Haas et al. | Dec 1980 | |
| 4252890 | Haas et al. | Feb 1981 | |
| 4536457 | Tam | Aug 1985 | |
| 4853307 | Tam et al. | Aug 1989 | |
| 4880715 | Tam et al. | Nov 1989 | |
| 4937163 | Tam et al. | Jun 1990 | |
| 5215838 | Tam et al. | Jun 1993 |
| Number | Date | Country |
|---|---|---|
| 9304411 | Mar 1993 | WOX |
| Entry |
|---|
| Hawley, Gessner G. The Condensed Chemical Dictionary, Tenth Edition. New York: Van Nostrand Reinhold Company. p. 765. 1981. |