This is a continuation of U.S. patent application Ser. No. 08/197,595 filed on Feb. 17, 1994, and now abandoned.
Number | Name | Date | Kind |
---|---|---|---|
1892093 | Battistella | Dec 1932 | |
2084361 | Vanderbilt | Jun 1937 | |
2423385 | Hixson et al. | Jul 1947 | |
2462341 | Tremaine | Feb 1949 | |
2516685 | Douty | Jul 1950 | |
3003898 | Reich | Oct 1961 | |
3003899 | Eberhard et al. | Oct 1961 | |
3072502 | Albano | Jan 1963 | |
3171800 | Rice et al. | Mar 1965 | |
3296143 | Boiko | Jan 1967 | |
3298931 | Herbert et al. | Jan 1967 | |
3492238 | Wohlberg | Jan 1970 | |
3530000 | Searles | Sep 1970 | |
3915633 | Ramachandran | Oct 1975 | |
4174290 | Leveskis | Nov 1979 | |
4595517 | Abadi | Jun 1986 | |
4637899 | Kennedy, Jr. | Jan 1987 | |
4855069 | Schuppiser et al. | Aug 1989 | |
5021096 | Abadi | Jun 1991 | |
5045352 | Mueller | Sep 1991 | |
5360488 | Hieatt et al. | Nov 1994 |
Number | Date | Country |
---|---|---|
0041270 | Apr 1979 | JPX |
0214391 | Dec 1983 | JPX |
Entry |
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McLaughlin, L.G., "Improved Acid Solution for Boilers Removes Oxides Without Precipitate", E.I. duPont de Nemours & Co., Inc., Wlimington, Delaware, Aug. 1963, pp. 52, 54, 57. |
Frenier et al., "Mechanism of Iron Oxide Dissolution--A Review of Recent Literature", 1984. |
Number | Date | Country | |
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Parent | 197595 | Feb 1994 |