F04C 2250/00
Geometry
F04C2250/00 (Geometry) appears on 624 US grants and 659 published applications in this corpus.
Search patents in F04C- Granted patents
- 624
- Published applications
- 659
- Assignees
- 317
- Inventors
- 1,336
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 2 |
| 2002 | 3 | 2 |
| 2003 | 3 | 4 |
| 2004 | 7 | 16 |
| 2005 | 6 | 12 |
| 2006 | 14 | 27 |
| 2007 | 8 | 17 |
| 2008 | 11 | 13 |
| 2009 | 11 | 9 |
| 2010 | 11 | 28 |
| 2011 | 12 | 28 |
| 2012 | 20 | 20 |
| 2013 | 23 | 24 |
| 2014 | 22 | 29 |
| 2015 | 23 | 34 |
| 2016 | 18 | 32 |
| 2017 | 29 | 31 |
| 2018 | 33 | 49 |
| 2019 | 29 | 56 |
| 2020 | 34 | 37 |
| 2021 | 46 | 38 |
| 2022 | 42 | 43 |
| 2023 | 38 | 28 |
| 2024 | 49 | 34 |
| 2025 | 32 | 26 |
| 2026 | 9 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotary pump with telescoping rotor sections that vary the flow rate18 Aug 2026US 12,710,040 B1Pratt & Whitney Canada Corp.
- Adding system for fire-extinguishing units26 May 2026US 12,636,532 B2Firedos GmbH
- Hermetic compressor with cylinder having elliptical inner circumferential surface, roller, and at least one vane7 Apr 2026US RE50,855 E1LG Electronics Inc.
- Pump device, respiratory device and method for providing a respiratory gas24 Mar 2026US 12,582,793 B2Weinmann Emergency Medical Technology GmbH + Co. KG
- Devices for dispensing fluids24 Mar 2026US 12,583,003 B2PSG Germany GmbH
- Armahn Rotary Pump27 Aug 2026US 2026/0251143 A1
- Pump stator tie-layer with surface roughness20 Aug 2026US 2026/0243253 A1Schlumberger Technology Corporation
- Discharge Passages For Compressors and Compressors Including Same13 Aug 2026US 2026/0235126 A1
- Stator with non-uniform thickness for one-to-two lobe ratio pumps6 Aug 2026US 2026/0226894 A1Schlumberger Technology Corporation
- Scroll pump6 Aug 2026US 2026/0226895 A1Edwards Limited
Most cited
By later US patents
- Scroll compressor with valved port for each compression chamber91US 4,818,195 AHitachi, Ltd. · 1989
- Scroll apparatus with reduced inlet pressure drop71US 5,314,316 AArthur D. Little, Inc. · 1994
- Controlled suction unloading in a scroll compressor64US 4,431,388 AThe Trane Company · 1984
- Scroll-type two stage positive fluid displacement apparatus56US 4,157,234 AIngersoll-Rand Company · 1979
- Vane type compressor having elliptical stator with doubly-offset rotor52US 4,410,305 AThe Rovac Corporation · 1983