Y10S 423/02
Sulfuric acid
Y10S423/02 (Sulfuric acid) appears on 79 US grants and 15 published applications in this corpus.
Search patents in Y10S- Granted patents
- 79
- Published applications
- 15
- Assignees
- 61
- Inventors
- 164
- Latest grant
- 23 Mar 2010
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 2 |
| 2003 | 2 | 2 |
| 2004 | 1 | 3 |
| 2005 | 2 | 2 |
| 2006 | 5 | 2 |
| 2007 | 0 | 2 |
| 2008 | 3 | 1 |
| 2009 | 3 | 0 |
| 2010 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for recycling waste sulfuric acid23 Mar 2010US 7,682,066 B2Sony Corporation
- Process and apparatus for the recovery of metal oxide particles6 Oct 2009US 7,597,873 B2Andritz Inc.
- Method for processing iron-laden spent sulfuric acid26 May 2009US 7,537,749 B2Tronox Pigments GmbH
- Process for recycling waste acid6 Jan 2009US 7,473,409 B2Veolia ES Technical Solutions L.L.C.
- Method for ferric sulfate manufacturing17 Jun 2008US 7,387,770 B2General Chemical Performance Products LLC
- Process for recycling waste acid6 Mar 2008US 2008/0056982 A1Veolia ES Technical Solutions L.L.C.
- Method for processing iron-laden spent sulfuric acid31 May 2007US 2007/0122336 A1Tronax Pigments GMbH
- Method for Ferric Sulfate Manufacturing1 Mar 2007US 2007/0048213 A1General Chemical Performance Products LLC
- Apparatus for recycling waste sulfuric acid6 Jul 2006US 2006/0144446 A1Sony Corporation
- Process and apparatus for the recovery of metal oxide particles16 Feb 2006US 2006/0034738 A1Andritz Inc.
Most cited
By later US patents
- Process of preparing a preferred ferric sulfate solution, and product39US 4,707,349 A1987
- Fertilizer values from galvanizer waste27US 4,792,349 ATennessee Valley Authority · 1988
- Method of processing waste materials24US 4,741,776 ABlue Circle Industries Limited · 1988
- Process for producing iron oxide products from waste liquids containing ferrous salts22US 3,970,738 AToda Kogyo Corporation · 1976
- Recovery of non-ferrous metals by thermal treatment of solutions containing non-ferrous and iron sulphates21US 4,415,540 AProvincial Holdings Ltd. · 1983