Y10S 423/19
Geothermal steam purification
Y10S423/19 (Geothermal steam purification) appears on 57 US grants and 0 published applications in this corpus.
Search patents in Y10S- Granted patents
- 57
- Published applications
- 0
- Assignees
- 18
- Inventors
- 66
- Latest grant
- 30 May 2000
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 7 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Desulforization method and desulfurization apparatus in geothermal power plant30 May 2000US 6,068,822 AMitsubishi Heavy Industries, Ltd.
- Process for controlling nitrogen dioxide and/or ammonia emissions from geothermal power plants22 Apr 1997US 5,622,632 AUnion Oil Company of California
- Solar process for making fullerenes17 Sep 1996US 5,556,517 AWilliam Marsh Rice University
- Process for the removal of h.sub.2 S from non-condensible gas streams and from steam6 Aug 1996US 5,543,122 AThe Dow Chemical Company
- Carbonyl sulfide abatement in fluids4 Jun 1996US 5,523,069 ANalco Fuel Tech
No published applications in this class yet.
Most cited
By later US patents
- Solar process for making fullerenes56US 5,556,517 AWilliam Marsh Rice University · 1996
- Industrial waste-water reuse by selective silica removal over activated alumina49US 4,276,180 A1981
- Method for separating metal values from brine47US 4,127,989 AUnion Oil Company of California · 1978
- H.sub.2 S Abatement process41US 4,363,215 APacific Gas and Electric Company · 1982
- Method for inhibiting silica precipitation and scaling in geothermal flow systems35US 4,328,106 AThe United States of America as represented by the United States Department of Energy · 1982