Number | Name | Date | Kind |
---|---|---|---|
1717799 | Marr | Jun 1929 | |
1840413 | Schmidt | Jan 1932 | |
2119519 | Bragg | Jun 1938 | |
2249646 | Bragg | Jul 1941 | |
2549099 | Kaswell | Apr 1951 | |
2975169 | Crawford et al. | Mar 1961 | |
3156654 | Konceny et al. | Nov 1964 | |
3453213 | Wade | Jul 1969 | |
4016029 | Samuelson | Apr 1977 |
Entry |
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02440, Chelating Agents & Metal Chelates; Academic Press New York and London 1964. |
Characterization of Chromophoric Groups in Groundwood and Lignin Model Compounds by Reaction with Specific Reducing Agents; Technical Paper T154; R. A. Fleury, and W. H. Rapson, University of Toronto, Toronto, Ont. |
Number | Date | Country | |
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Parent | 684993 | Dec 1984 |