C01B 17/906
Removal of mercury
Official title: {Removal of mercury}
C01B17/906 (Removal of mercury) appears on 6 US grants and 1 published applications in this corpus.
Search patents in C01B- Granted patents
- 6
- Published applications
- 1
- Assignees
- 7
- Inventors
- 13
- Latest grant
- 18 Nov 2008
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for the removal of mercury from sulphuric acid with thiosulphate precipitation18 Nov 2008US 7,452,521 B2Outotec Oyj
- Process for reducing selenium and mercury from aqueous solutions8 May 2001US 6,228,270 B1Noranda Inc.
- Removal of mercury from sulfuric acid22 Jun 1982US 4,336,237 AASARCO Incorporated
- Heavy metal adsorbents of high selectivity, process for production of same, and adsorption process15 Dec 1981US 4,305,827 AUnitika Ltd.
- Method of removing mercury from sulfuric acid30 Mar 1976US 3,947,561 ASt. Joe Minerals Corporation
Most cited
By later US patents
- Heavy metal adsorbents of high selectivity, process for production of same, and adsorption process22US 4,305,827 AUnitika Ltd. · 1981
- Removal of mercury from sulfuric acid19US 4,336,237 AASARCO Incorporated · 1982
- Method for the purification of sulphuric acid containing mercury7US 3,932,149 ABoliden Aktiebolag · 1976
- Process for reducing selenium and mercury from aqueous solutions2US 6,228,270 B1Noranda Inc. · 2001
- Method of removing mercury from sulfuric acid1US 3,947,561 ASt. Joe Minerals Corporation · 1976