Number | Date | Country | Kind |
---|---|---|---|
9216766 | Aug 1992 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
3723325 | Parran, Jr. | Mar 1973 | |
4438095 | Grollier et al. | Mar 1984 | |
4529586 | De Marco et al. | Jul 1985 | |
4559227 | Chandra et al. | Dec 1985 | |
4592859 | Smith-Johannsen | Jun 1986 | |
4673525 | Small et al. | Jun 1987 | |
4673568 | Grollier et al. | Jun 1987 | |
4812253 | Small et al. | Mar 1989 | |
4976952 | Lang et al. | Dec 1990 | |
5006263 | Robinson et al. | Apr 1991 | |
5085857 | Reid et al. | Feb 1992 | |
5096608 | Small et al. | Mar 1992 | |
5182105 | Takata et al. | Jan 1993 |
Number | Date | Country |
---|---|---|
308189 | Mar 1989 | EPX |
308190 | Mar 1989 | EPX |
3081400 | Apr 1991 | JPX |
2161172 | Jan 1986 | GBX |
Entry |
---|
Kirk-Othmer, Concise Encyclopedia of Chemical Technology, John Wiley & Sons, 1985, pp. 492-494. |