F05C
Indexing scheme relating to materials, material properties or material characteristics for machines
Official title: Indexing scheme relating to materials, material properties or material characteristics for machines, engines or pumps other than non-positive-displacement machines or engines
F05C (Indexing scheme relating to materials, material properties or material characteristics for machines) appears on 4,119 US grants and 2,447 published applications in this corpus.
Search patents in F05C- Granted patents
- 4,119
- Published applications
- 2,447
- Assignees
- 1,480
- Inventors
- 7,953
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 33 | 0 |
| 1977 | 33 | 0 |
| 1978 | 42 | 0 |
| 1979 | 26 | 0 |
| 1980 | 36 | 0 |
| 1981 | 40 | 0 |
| 1982 | 49 | 0 |
| 1983 | 32 | 0 |
| 1984 | 54 | 0 |
| 1985 | 90 | 0 |
| 1986 | 60 | 0 |
| 1987 | 100 | 0 |
| 1988 | 85 | 0 |
| 1989 | 102 | 0 |
| 1990 | 94 | 0 |
| 1991 | 117 | 0 |
| 1992 | 105 | 0 |
| 1993 | 84 | 0 |
| 1994 | 105 | 0 |
| 1995 | 104 | 0 |
| 1996 | 124 | 0 |
| 1997 | 149 | 0 |
| 1998 | 163 | 0 |
| 1999 | 151 | 0 |
| 2000 | 166 | 0 |
| 2001 | 147 | 58 |
| 2002 | 144 | 134 |
| 2003 | 138 | 144 |
| 2004 | 113 | 139 |
| 2005 | 89 | 113 |
| 2006 | 71 | 105 |
| 2007 | 59 | 115 |
| 2008 | 62 | 124 |
| 2009 | 61 | 137 |
| 2010 | 80 | 151 |
| 2011 | 85 | 139 |
| 2012 | 66 | 115 |
| 2013 | 69 | 105 |
| 2014 | 83 | 89 |
| 2015 | 80 | 132 |
| 2016 | 76 | 97 |
| 2017 | 82 | 80 |
| 2018 | 73 | 92 |
| 2019 | 93 | 79 |
| 2020 | 62 | 73 |
| 2021 | 56 | 58 |
| 2022 | 56 | 43 |
| 2023 | 42 | 34 |
| 2024 | 42 | 30 |
| 2025 | 35 | 40 |
| 2026 | 11 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- F05C 2201/00MetalsIndexing code1,882
- F05C 2225/00Synthetic polymersIndexing code1,255
- F05C 2253/00Indexing scheme relating to materials, material properties or material characteristics for machinesIndexing code978
- F05C 2251/00Material propertiesIndexing code775
- F05C 2203/00Non-metallic inorganic materialsIndexing code605
- F05C 2231/00Organic materials not otherwise provided forIndexing code9
- F05C 2223/00Cellulosic materialsIndexing code8
- F05C 2211/00Inorganic materials not otherwise provided forIndexing code7
All 9 main groupsShow fewer
Recent patents
- Systems and methods for a remote control actuator6 Oct 2026US 12,753,743 B2Trustees of Tufts College
- Fretting resistant rotary engine housings18 Aug 2026US 12,709,983 B2Pratt & Whitney Canada Corp.
- Compressor4 Aug 2026US 12,698,771 B2Carrier Japan Corporation
- Rubber compound reinforced with alternative fibers23 Jun 2026US 12,661,856 B2Abaco Drilling Technologies LLC
- Method for producing a housing, and shell housing and housing for a rotary piston engine26 May 2026US 12,637,946 B2Knapp e-mobility GmbH
- Diaphragm pump8 Oct 2026US 2026/0309142 A1Ckd Corporation
- Vacuum pump17 Sep 2026US 2026/0275984 A1
- Double diaphragm pump with improved plain bearing27 Aug 2026US 2026/0251134 A1Lutz Pumpen GmbH
- Pump stator tie-layer with surface roughness20 Aug 2026US 2026/0243253 A1Schlumberger Technology Corporation
- Stator with non-uniform thickness for one-to-two lobe ratio pumps6 Aug 2026US 2026/0226894 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Electroactive polymer devices1,577US 6,545,384 B1SRI International · 2003
- Electroactive polymer electrodes1,515US 6,583,533 B2SRI International · 2003
- Device and method employing shape memory alloy491US 6,916,159 B2TheraSense, Inc. · 2005
- Electrostatically actuated mesopump having a plurality of elementary cells377US 5,836,750 AHoneywell Inc. · 1998
- Implantable electric axial-flow blood pump344US 5,588,812 ANimbus, Inc. · 1996