Number | Name | Date | Kind |
---|---|---|---|
575714 | Heinzerling | Jan 1897 | |
1040886 | Claude | Oct 1918 | |
2278750 | Walker | Apr 1942 | |
2500129 | Laverty | Mar 1950 | |
2641114 | Holthaus | Jun 1953 | |
3349571 | Nebgen | Oct 1967 | |
3374637 | Wenzke | Mar 1968 | |
3443388 | Kramer et al. | May 1969 | |
4150494 | Rothchild | Apr 1979 | |
4237700 | Rothchild | Dec 1980 | |
4242875 | Schafer | Jan 1981 | |
4444016 | Banerjee | Apr 1984 | |
4545134 | Mukerjee et al. | Oct 1985 | |
5214924 | Karthaus et al. | Jun 1993 | |
5291738 | Waldrop | Mar 1994 | |
5329774 | Tanguay et al. | Jul 1994 |
Number | Date | Country |
---|---|---|
2349113 | Nov 1977 | FRX |
Entry |
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Encyclopedia of Chemical Technology, 3rd edition; vol. 21; John Wiley & Sons; 1983; pp. 355-376. |