Number | Name | Date | Kind |
---|---|---|---|
3328307 | Schmitz | Jun 1967 | |
3755559 | Hewitt | Aug 1973 | |
3876563 | Collins | Apr 1975 | |
3980769 | Ghilardi et al. | Sep 1976 | |
4110263 | Lindemann et al. | Aug 1978 | |
4233192 | Lindemann et al. | Nov 1980 | |
4329334 | Su et al. | May 1982 | |
4375421 | Rubin et al. | Mar 1983 |
Entry |
---|
McCutcheon's Detergents & Emulsifiers, 1978 Annual, p. 227. |