F04C 2220/00
Application
F04C2220/00 (Application) appears on 410 US grants and 491 published applications in this corpus.
Search patents in F04C- Granted patents
- 410
- Published applications
- 491
- Assignees
- 269
- Inventors
- 942
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 7 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 2 | 0 |
| 1998 | 7 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 3 | 2 |
| 2002 | 8 | 7 |
| 2003 | 6 | 5 |
| 2004 | 6 | 13 |
| 2005 | 7 | 15 |
| 2006 | 5 | 26 |
| 2007 | 8 | 20 |
| 2008 | 6 | 28 |
| 2009 | 7 | 25 |
| 2010 | 12 | 21 |
| 2011 | 13 | 15 |
| 2012 | 14 | 21 |
| 2013 | 13 | 18 |
| 2014 | 13 | 15 |
| 2015 | 15 | 23 |
| 2016 | 9 | 12 |
| 2017 | 21 | 25 |
| 2018 | 17 | 23 |
| 2019 | 13 | 32 |
| 2020 | 20 | 20 |
| 2021 | 20 | 30 |
| 2022 | 22 | 21 |
| 2023 | 22 | 30 |
| 2024 | 25 | 16 |
| 2025 | 23 | 13 |
| 2026 | 6 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F04C 2220/10VacuumIndexing code229
- F04C 2220/24Application: for metering throughflowIndexing code74
- F04C 2220/30Use in a chemical vapor deposition [cvd] process or in a similarIndexing code33
- F04C 2220/20Pumps with means for separating and evacuating the gaseous phaseIndexing code29
- F04C 2220/50Pumps with means for introducing gas under pressure for ballastingIndexing code27
- F04C 2220/40Pumps with means for venting areas other than the working chamberIndexing code26
- F04C 2220/22Application: for very low temperatures, i.e. cryogenicIndexing code5
- F04C 2220/28Application: for pulsed fluid flowIndexing code4
All 9 subgroupsShow fewer
Recent patents
- Vacuum pump assembly with improved process by-product holding capacity1 Sep 2026US 12,723,588 B2Beijing Grand Hitek. Co., Ltd.
- Pump and method of manufacturing a sealing30 Jun 2026US 12,669,124 B2Pfeiffer Vacuum Technology AG
- Pump for additive manufacturing16 Jun 2026US 12,654,396 B2Sciperio, Inc
- Information processing apparatus, information processing system, information processing method, program, substrate processing apparatus, criterion data determination apparatus, and criterion data determination method17 Mar 2026US 12,577,952 B2Ebara Corporation
- Rotary piston compressor/pump/blower with a ventilation channel10 Feb 2026US 12,546,315 B2Gardner Denver Schopfheim GmbH
- Scroll vacuum pump and scroll vacuum pump system1 Oct 2026US 2026/0298241 A1Pfeiffer Vacuum Technology AG
- Vacuum pump17 Sep 2026US 2026/0275984 A1
- Vacuum pump20 Aug 2026US 2026/0243257 A1Pfeiffer Vacuum GmbH
- Scroll pump6 Aug 2026US 2026/0226895 A1Edwards Limited
- Pump and method of manufacturing a sealing23 Jul 2026US 2026/0210357 A1Pfeiffer Vacuum Technology AG
Most cited
By later US patents
- Two stage screw type vacuum pump with motor in-between the stages140US 5,846,062 AEbara Corporation · 1998
- Pump and flow sensor combination123US 5,727,933 AHale Fire Pump Company · 1998
- Dual rotor flow meter121US 5,992,230 AHoffer Flow Controls, Inc. · 1999
- Mechanical ventilation system utilizing bias valve85US 8,118,024 B2CareFusion 203, Inc. · 2012
- Method and apparatus for accurately dispensing liquids and solids72US 5,857,589 AFluid Research Corporation · 1999