B01J 31/403
Containing iron group metals or copper
Official title: {containing iron group metals or copper}
B01J31/403 (Containing iron group metals or copper) appears on 115 US grants and 44 published applications in this corpus.
Search patents in B01J- Granted patents
- 115
- Published applications
- 44
- Assignees
- 81
- Inventors
- 283
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 8 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 7 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 2 |
| 2002 | 1 | 3 |
| 2003 | 5 | 4 |
| 2004 | 4 | 2 |
| 2005 | 2 | 4 |
| 2006 | 4 | 2 |
| 2007 | 3 | 3 |
| 2008 | 2 | 1 |
| 2009 | 1 | 2 |
| 2010 | 2 | 6 |
| 2011 | 4 | 0 |
| 2012 | 3 | 4 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 3 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 1 | 3 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Iron removal from carbon nanotubes and metal catalyst recycle25 Nov 2025US 12,479,729 B2Nanocomp Technologies, Inc.
- Iron salt catalyst regeneration17 Sep 2024US 12,091,376 B2
- Catalyst recycle methods6 Jun 2023US 11,667,617 B2Novomer, Inc.
- Catalyst recycle methods8 Dec 2020US 10,858,329 B2Novomer, Inc.
- Spray-dried catalyst compositions and polymerization processes employing the same2 May 2017US 9,637,567 B2Univation Technologies, LLC
- Iron salt catalyst regeneration11 Jul 2024US 2024/0228410 A9
- Iron salt catalyst regeneration25 Apr 2024US 2024/0132427 A1
- A process for producing alpha-olefins4 Jan 2024US 2024/0002316 A1Shell Oil Company
- Iron removal from carbon nanotubes and metal catalyst recycle30 Mar 2023US 2023/0102474 A1Nanocomp Technologies, Inc.
- Catalyst Recycle Methods22 Oct 2020US 2020/0331877 A1Novomer, Inc.
Most cited
By later US patents
- Method of recovering in active form the catalyst for the terephthalic acid synthesis117US 4,356,319 AMontedison S.p.A. · 1982
- Process for separating zero-valent nickel species from divalent nickel species97US 4,387,056 AE. I. Du Pont de Nemours and Company · 1983
- Recovery process for oxidation catalyst in the manufacture of aromatic carboxylic acids53US 5,955,394 AMobile Process Technology, Co. · 1999
- Method of recovering a catalytic metal43US 4,459,365 AMitsubishi Gas Chemical Company, Inc. · 1984
- Chiral salen catalyst and methods for the preparation of chiral compounds from racemic epoxides by using new catalyst36US 6,884,750 B2RS Tech Corp. · 2005