(12) United States Patent (10) Patent No.: US 7,060,233 B1 Srinivas Et Al
USOO7060233B1 (12) United States Patent (10) Patent No.: US 7,060,233 B1 Srinivas et al. (45) Date of Patent: Jun. 13, 2006 (54) PROCESS FOR THE SIMULTANEOUS 4,444,908 A 4, 1984 Hass et al. .................. 5O2.247 REMOVAL OF SULFUR AND MERCURY 4,508,699 A 4, 1985 Schoofs ............ ... 423,574 R 4,519,992 A 5/1985 Alkhazov et al. ........... 423 230 (75) Inventors: Girish Srinivas, Broomfield, CO (US); 4,528,277 A 7/1985 Hass et al. .................... 5O2.79 Robert J. Copeland, Golden, CO (US) 4,552,746 A 11/1985 Kettner et al. .... ... 423,573 4,623,533. A 1 1/1986 Broecker et al. ........... 423/573 (73) Assignee: TDA Research, Inc., Wheat Ridge, CO 4,640,908 A 2/1987 Dupin ... ... 502/243 (US) 4,786,483. A * 11/1988 Audeh ........... ... 423,210 4,818,740 A 4, 1989 Berben et al. .............. 502,313 (*) Notice: Subject to any disclaimer, the term of this 4,857,297 A 8, 1989 Kettner et al. ........... 423,576.8 patent is extended or adjusted under 35 4,886,649 A 12/1989 Ismagilov et al. .......... 423 230 U.S.C. 154(b) by 0 days. 4.937,058 A * 6/1990 Dupin et al. ................ 423,224 4,981,577 A * 1/1991 Audeh et al. ..... ... 208,251 R. (21) Appl. No.: 10/717,299 4,982,003 A 1/1991 Hara et al. .................. 564,480 9 4,983,277 A * 1/1991 Audeh et al. ..... ... 208,252 (22) Filed: Nov. 19, 2003 5,034,203 A 7, 1991 Audeh et al.
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