Number | Date | Country | Kind |
---|---|---|---|
8407150 | Mar 1984 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
2729557 | Booth et al. | Jan 1956 | |
2926154 | Keim | Feb 1960 | |
3036305 | Channabasappa et al. | May 1962 | |
3215654 | Schmalz | Nov 1965 | |
3240664 | Earle, Jr. | Mar 1966 | |
3311594 | Earle, Jr. | Mar 1967 | |
3332871 | Robinson | Aug 1964 | |
3462365 | Vogelsang, Jr. | Aug 1969 | |
3623991 | Sabatelli et al. | Nov 1971 | |
3639292 | Gilby | Feb 1972 | |
3658710 | Puckerius et al. | Apr 1972 | |
3752761 | Boothe et al. | Aug 1973 | |
3793194 | Zecher | Feb 1974 | |
3837803 | Carter et al. | Sep 1974 | |
3982894 | Annand et al. | Sep 1975 | |
3985671 | Clark | Oct 1976 | |
4038451 | Brown et al. | Jul 1977 | |
4042324 | Auel et al. | Aug 1977 | |
4052160 | Cook et al. | Oct 1977 | |
4057511 | Bohnsack et al. | Nov 1977 | |
4085060 | Vassileff | Apr 1978 | |
4297237 | Boffardi | Oct 1981 | |
4323461 | Quinlan | Apr 1982 | |
4387027 | May et al. | Jun 1983 | |
4557896 | Brocklebank et al. | Dec 1985 |
Number | Date | Country |
---|---|---|
0075514 | Mar 1983 | EPX |
2310450 | Sep 1974 | DEX |
2505435 | Aug 1976 | DEX |
1598419 | Aug 1970 | FRX |
2130717 | Nov 1972 | FRX |
2235205 | Jan 1975 | FRX |
1208827 | Oct 1970 | GBX |
1297515 | Nov 1972 | GBX |
1348595 | Mar 1974 | GBX |
1452557 | Oct 1976 | GBX |
1486396 | Sep 1977 | GBX |
1539974 | Feb 1979 | GBX |
1577495 | Oct 1980 | GBX |
1589109 | May 1981 | GBX |
2066234 | Jul 1981 | GBX |
2085433A | Apr 1982 | GBX |
2105319 | Mar 1983 | GBX |
2112370 | Jul 1983 | GBX |
Entry |
---|
Betz Handbook of Industrial Water Conditioning, 7th Ed, 1976, pp. 198-200. |
Patent Abstracts of Japan, Unexamined Applications, C Field, vol. 8, No. 184, p. 35 C 239, Aug. 23, 1984. |
Research Disclosure 23229; Ciba-Geigy PLC; "Inhibiting Corrosion and Scale Deposition", Aug. 1983. |