This Application claims priority to U.S. Provisional Application Ser. No. 60/221,435, filed on Jul. 28, 2000, in the names of Dana C. Bookbinder and David F. Dawson-Elli.
Number | Name | Date | Kind |
---|---|---|---|
3756052 | Quaal et al. | Sep 1973 | A |
3922821 | Canterbury | Dec 1975 | A |
4572791 | Onopchenko et al. | Feb 1986 | A |
4828735 | Minagawa et al. | May 1989 | A |
4959164 | Engelmann | Sep 1990 | A |
4973724 | Nelson | Nov 1990 | A |
5021262 | Bouillard et al. | Jun 1991 | A |
5196401 | Engelmann | Mar 1993 | A |
5461008 | Sutherland et al. | Oct 1995 | A |
5507962 | Jahanmir et al. | Apr 1996 | A |
5534172 | Perry et al. | Jul 1996 | A |
5678466 | Wahl | Oct 1997 | A |
5716705 | Wirth et al. | Feb 1998 | A |
6242391 | Fukutani et al. | Jun 2001 | B1 |
6258759 | Futahashi et al. | Jul 2001 | B1 |
Number | Date | Country |
---|---|---|
0 369 692 | May 1993 | EP |
Entry |
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Pamela J. Watson et al., “Chemically Enhanced Drilling, An Annotated Tabulation of Published Results”, United States Department of the Interior, Bureau of Mines, pp. Introduction—53. |
William H. Engelmann et al., “Zeta Potential Control For Enhanced Drilling of Taconite and Other Hard Rocks”, 60th Annual Meeting of the Minnesota Section, AIME 48th Annual Mining Symposium, Jan. 14-15, 1987, pp. 6-1 to 6-22. |
William H. Engelmann et al., “Zeta Potential Control for Simultaneous Enhancement of Penetration Rates and Bit Life in Rock Drilling”, United States Department of Interior, Bureau of Mines, 1987, pp. 1-18. |
Number | Date | Country | |
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60/221435 | Jul 2000 | US |