F04C 2/16
With helical teeth
Official title: with helical teeth, e.g. chevron-shaped, screw type {(for non-parallel axes of movement F04C3/00)}
F04C2/16 (With helical teeth) appears on 263 US grants and 313 published applications in this corpus.
Search patents in F04C- Granted patents
- 263
- Published applications
- 313
- Assignees
- 174
- Inventors
- 542
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 1 |
| 2002 | 5 | 3 |
| 2003 | 5 | 3 |
| 2004 | 4 | 7 |
| 2005 | 0 | 0 |
| 2006 | 2 | 3 |
| 2007 | 3 | 6 |
| 2008 | 2 | 5 |
| 2009 | 4 | 4 |
| 2010 | 5 | 8 |
| 2011 | 1 | 11 |
| 2012 | 4 | 10 |
| 2013 | 4 | 16 |
| 2014 | 9 | 15 |
| 2015 | 7 | 20 |
| 2016 | 13 | 18 |
| 2017 | 17 | 21 |
| 2018 | 16 | 18 |
| 2019 | 14 | 20 |
| 2020 | 15 | 10 |
| 2021 | 13 | 17 |
| 2022 | 23 | 25 |
| 2023 | 18 | 23 |
| 2024 | 25 | 21 |
| 2025 | 13 | 15 |
| 2026 | 10 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Screw pump and its components4 Aug 2026US 12,698,769 B2Illinois Tool Works Inc.
- Screw pump and its components28 Jul 2026US 12,692,863 B2Illinois Tool Works Inc.
- Pump with pressure disc7 Jul 2026US 12,674,454 B2ITT Bornemann GmbH
- Pump for additive manufacturing16 Jun 2026US 12,654,396 B2Sciperio, Inc
- Screw pump and its components2 Jun 2026US 12,644,452 B2Illinois Tool Works Inc.
- Screw spindle pump8 Oct 2026US 2026/0309150 A1Leistritz Pumpen GmbH
- Multiphase pump of the screw spindle pump type1 Oct 2026US 2026/0298229 A1Leistritz Pumpen GmbH
- Eccentric Screw Pump Device, Pump System, Discharge System and Use13 Aug 2026US 2026/0235121 A1Putzmeister Engineering GmbH
- Oil conduit system for hvac&r system13 Aug 2026US 2026/0235335 A1Tyco Fire & Security GmbH
- Screw compressor having rotors mounted on one side2 Jul 2026US 2026/0185524 A1Gardner Denver Deutschland GmbH
Most cited
By later US patents
- Distributor apparatus with a pair of intermeshing screw rotors255US 9,938,972 B2Fish Engineering Limited · 2018
- System and method for driving a pump174US 8,801,394 B2Solar Turbines Incorporated · 2014
- Sealless multiphase screw-pump-and-motor package132US 6,457,950 B1Flowserve Management Company · 2002
- Positive displacement screw pump having pressure feedback control67US 5,348,453 AJames River Corporation of Virginia · 1994
- Modular downhole multiphase pump29US 6,413,065 B12002