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4190439 | Gortsema | Feb 1980 | A |
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4851206 | Boudart et al. | Jul 1989 | A |
5230729 | McCandlish et al. | Jul 1993 | A |
5352269 | McCandlish et al. | Oct 1994 | A |
5372797 | Dunmead et al. | Dec 1994 | A |
5613998 | Seegopaul et al. | Mar 1997 | A |
5704994 | Kuwabara et al. | Jan 1998 | A |
5728197 | Seegopaul et al. | Mar 1998 | A |
5912399 | Yu et al. | Jun 1999 | A |
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6293989 | Kim et al. | Sep 2001 | B1 |
Number | Date | Country |
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846658 | Jun 1998 | EP |
Entry |
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F. H. Ribeiro et al, Preparation and Surface Composition of Tungsten Carbide Powders with High Specific Surface Area, 1991 American Chemical Society, 805-812. |
Refractory Hard Metals, Tungsten Carbides, Macmillan, New York, 1953. |