F04C 2/107
With helical teeth
Official title: with helical teeth
F04C2/107 (With helical teeth) appears on 585 US grants and 595 published applications in this corpus.
Search patents in F04C- Granted patents
- 585
- Published applications
- 595
- Assignees
- 252
- Inventors
- 936
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 9 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 8 | 0 |
| 1998 | 10 | 0 |
| 1999 | 7 | 0 |
| 2000 | 13 | 0 |
| 2001 | 9 | 2 |
| 2002 | 10 | 5 |
| 2003 | 9 | 11 |
| 2004 | 3 | 9 |
| 2005 | 10 | 18 |
| 2006 | 8 | 14 |
| 2007 | 4 | 17 |
| 2008 | 12 | 21 |
| 2009 | 10 | 31 |
| 2010 | 12 | 23 |
| 2011 | 20 | 27 |
| 2012 | 15 | 20 |
| 2013 | 16 | 22 |
| 2014 | 21 | 28 |
| 2015 | 20 | 40 |
| 2016 | 18 | 36 |
| 2017 | 32 | 26 |
| 2018 | 25 | 44 |
| 2019 | 34 | 26 |
| 2020 | 33 | 28 |
| 2021 | 29 | 37 |
| 2022 | 30 | 17 |
| 2023 | 25 | 26 |
| 2024 | 22 | 19 |
| 2025 | 27 | 25 |
| 2026 | 8 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Progressive cavity pump system having reverse mode8 Sep 2026US 12,729,682 B2Schlumberger Technology Corporation
- Eccentric screw pump with magnetic coupling18 Aug 2026US 12,710,041 B2NETZSCH Pumpen & Systeme GmbH
- Downhole fluid motor and associated methods11 Aug 2026US 12,704,022 B2Thru Tubing Solutions, Inc.
- Hydraulic pump7 Jul 2026US 12,673,648 B2Ree Automotive Ltd
- Rubber compound reinforced with alternative fibers23 Jun 2026US 12,661,856 B2Abaco Drilling Technologies LLC
- Metal felt and brush structures as sealing elements in metal-metal mud motors10 Sep 2026US 2026/0266284 A1Baker Hughes Oilfield Operations LLC
- Pump stator tie-layer with surface roughness20 Aug 2026US 2026/0243253 A1Schlumberger Technology Corporation
- Eccentric Screw Pump Device, Pump System, Discharge System and Use13 Aug 2026US 2026/0235121 A1Putzmeister Engineering GmbH
- Stator with non-uniform thickness for one-to-two lobe ratio pumps6 Aug 2026US 2026/0226894 A1Schlumberger Technology Corporation
- Anisotropic stator reinforcement lining30 Jul 2026US 2026/0218572 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Heart assist pump234US 5,112,349 AAmerican BioMed, Inc. · 1992
- Heart assist pump227US 4,964,864 AAmerican BioMed, Inc. · 1990
- Direct drive linear flow blood pump134US 7,074,018 B22006
- Postmix juice dispenser107US 5,842,603 AThe Coca-Cola Company · 1998
- Method and apparatus for controlling a submergible pumping system104US 6,045,333 ACamco International Inc. · 2000