Number | Name | Date | Kind |
---|---|---|---|
3437431 | Platz et al. | Apr 1969 | |
3922330 | Pittie et al. | Nov 1975 | |
3967956 | Payne | Jul 1976 | |
4133834 | Pickens | Jan 1979 | |
4331634 | Shanton et al. | May 1982 |
Number | Date | Country |
---|---|---|
2459099 | Jun 1975 | DEX |
2518631 | Apr 1976 | DEX |
2013644 | Aug 1979 | GBX |
2104516 | Sep 1983 | GBX |
Entry |
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M. J. Cleare, et al., J. Chem. Tech., Biotechnol., vol. 29 (1979) pp. 210-224. |