Number | Name | Date | Kind |
---|---|---|---|
3577354 | Kehl | May 1971 | |
3893934 | Braun et al. | Jul 1975 | |
4002776 | Braun et al. | Jan 1977 | |
4464452 | Gruber et al. | Aug 1984 | |
4480021 | Lu et al. | Oct 1984 | |
5188919 | Dewanckele et al. | Feb 1993 | |
5405727 | Wilson et al. | Apr 1995 | |
5523484 | Wilson et al. | Jun 1996 |
Entry |
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W. Schulz et al in Chem. Ber. 100, pp. 2640-2648 (1967). |