Number | Name | Date | Kind |
---|---|---|---|
1793670 | Borrowman | Feb 1931 | |
2004257 | Tschirner | Jun 1935 | |
2345827 | Olin | Apr 1944 | |
3046233 | Levy | Jul 1962 | |
3066095 | Hronas | Nov 1962 | |
3130167 | Green | Apr 1964 | |
3338828 | Clark | Aug 1967 | |
3342742 | Cocks | Sep 1967 | |
3350304 | Bacon | Oct 1967 | |
3388060 | Clark | Jun 1968 | |
3524811 | Tsuk et al. | Aug 1970 | |
3860526 | Corbett | Jan 1975 | |
3953330 | Tonkyn et al. | Apr 1976 | |
4116828 | Sawyer, Jr. | Sep 1978 | |
4332693 | Piepho | Jun 1982 | |
4415467 | Piepho | Nov 1983 | |
4440867 | Sabberwal | Apr 1984 | |
4450092 | Huang | May 1984 | |
4530765 | Sabberwal et al. | Jul 1985 | |
4610801 | Matthews et al. | Sep 1986 | |
4746457 | Hassick et al. | May 1988 | |
4765908 | Monick et al. | Aug 1988 |
Entry |
---|
A. M. Thayer, "Water Treatment Chemicals: Tighter Rules Drive Demand", C&EN, Mar. 26, 1990, pp. 17-34. |