F05C 2201/0433
Iron group
Official title: Iron group; Ferrous alloys, e.g. steel
F05C2201/0433 (Iron group) appears on 912 US grants and 428 published applications in this corpus.
Search patents in F05C- Granted patents
- 912
- Published applications
- 428
- Assignees
- 390
- Inventors
- 1,873
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 9 | 0 |
| 1978 | 17 | 0 |
| 1979 | 8 | 0 |
| 1980 | 8 | 0 |
| 1981 | 13 | 0 |
| 1982 | 18 | 0 |
| 1983 | 8 | 0 |
| 1984 | 14 | 0 |
| 1985 | 29 | 0 |
| 1986 | 22 | 0 |
| 1987 | 38 | 0 |
| 1988 | 27 | 0 |
| 1989 | 26 | 0 |
| 1990 | 27 | 0 |
| 1991 | 29 | 0 |
| 1992 | 33 | 0 |
| 1993 | 17 | 0 |
| 1994 | 29 | 0 |
| 1995 | 20 | 0 |
| 1996 | 25 | 0 |
| 1997 | 29 | 0 |
| 1998 | 32 | 0 |
| 1999 | 23 | 0 |
| 2000 | 33 | 0 |
| 2001 | 33 | 7 |
| 2002 | 28 | 21 |
| 2003 | 23 | 23 |
| 2004 | 21 | 28 |
| 2005 | 20 | 24 |
| 2006 | 10 | 24 |
| 2007 | 10 | 25 |
| 2008 | 17 | 21 |
| 2009 | 16 | 30 |
| 2010 | 18 | 22 |
| 2011 | 9 | 30 |
| 2012 | 10 | 16 |
| 2013 | 15 | 19 |
| 2014 | 14 | 16 |
| 2015 | 15 | 24 |
| 2016 | 17 | 18 |
| 2017 | 13 | 13 |
| 2018 | 12 | 10 |
| 2019 | 12 | 11 |
| 2020 | 14 | 13 |
| 2021 | 10 | 7 |
| 2022 | 5 | 7 |
| 2023 | 6 | 7 |
| 2024 | 6 | 2 |
| 2025 | 7 | 7 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing a water-hydraulic machine24 Mar 2026US 12,584,470 B2Danfoss A/S
- Reduced heat exchange reciprocating compressor4 Nov 2025US 12,460,625 B2Officine Mario Dorin S.P.A.
- Wear resistant fluid ends28 Oct 2025US 12,454,951 B2Kennametal Inc.
- Piston assembly with opposing injection regions for an opposed-piston engine3 Jun 2025US 12,320,312 B2Achates Power, Inc.
- Cam ring and plate module for vehicle vacuum pumps, and method of manufacturing the same27 May 2025US 12,312,664 B2Hyundai Motor Company
- Vacuum pump17 Sep 2026US 2026/0275984 A1
- Double diaphragm pump with improved plain bearing27 Aug 2026US 2026/0251134 A1Lutz Pumpen GmbH
- Pumps having components including carbon-manganese-chromium (c-mn-cr) steel alloys and related methods19 Mar 2026US 2026/0078474 A1Vulcan Industrial Holdings, LLC
- Cam ring and plate module for vehicle vacuum pumps, and method of manufacturing the same7 Aug 2025US 2025/0250659 A1Hyundai Motor Company
- Gear pump or gear motor26 Jun 2025US 2025/0207585 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Composite synthetic materials149US 4,960,643 A1990
- Fastening devices140US 5,332,348 A1994
- Double-wall airfoil127US 5,626,462 AGeneral Electric Company · 1997
- Thermally sprayed aluminum-bronze coatings on aluminum engine bores121US 5,080,056 AGeneral Motors Corporation · 1992
- Corrosion resistant fluid end for well service pumps100US 9,435,333 B2Halliburton Energy Services.Inc. · 2016