F04B 19/12
Of helical or screw-type
Official title: of helical or screw-type
F04B19/12 (Of helical or screw-type) appears on 25 US grants and 18 published applications in this corpus.
Search patents in F04B- Granted patents
- 25
- Published applications
- 18
- Assignees
- 17
- Inventors
- 44
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 2 |
| 2019 | 2 | 0 |
| 2020 | 2 | 2 |
| 2021 | 0 | 1 |
| 2022 | 1 | 2 |
| 2023 | 2 | 1 |
| 2024 | 0 | 1 |
| 2025 | 0 | 2 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-piping spiral-pump for treating food items7 Jul 2026US 12,674,443 B2Lambhusasund Ehf.
- Pumps in serial connection24 Mar 2026US 12,582,107 B2MMC First Process AS
- Fluid flow converter with support arrangement10 Feb 2026US 12,546,297 B2Enairon AB
- Fluid flow converter with interstage flow channel10 Feb 2026US 12,546,298 B2Enairon AB
- Machine having a liquid lubrication system and a shaft4 Jul 2023US 11,692,466 B2Pratt & Whitney Canada Corp.
- Method of optimizing a coil pump system1 Oct 2026US 2026/0298216 A1MMC First Process AS
- Pump stator tie-layer with surface roughness20 Aug 2026US 2026/0243253 A1Schlumberger Technology Corporation
- Fluid flow converter with interstage flow channel3 Jul 2025US 2025/0215866 A1Enairon AB
- Fluid flow converter with support arrangement19 Jun 2025US 2025/0198400 A1Enairon AB
- Pumps in serial connection23 May 2024US 2024/0167468 A1MMC First Process AS
Most cited
By later US patents
- Hydraulic screw pump39US 5,073,082 A1991
- Actively suspended counter-rotating machine33US 4,405,286 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1983
- Sealed flight screw injector26US 4,249,838 AFoster-Miller Associates, Inc. · 1981
- Dual auger top loading pumping system for manure tank wagon20US 4,971,526 A1990
- Helical hydraulic pump11US 5,366,341 A1994