F04C 18/107
With helical teeth
Official title: with helical teeth
F04C18/107 (With helical teeth) appears on 87 US grants and 49 published applications in this corpus.
Search patents in F04C- Granted patents
- 87
- Published applications
- 49
- Assignees
- 39
- Inventors
- 114
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 1 |
| 2003 | 2 | 1 |
| 2004 | 0 | 3 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 6 |
| 2016 | 2 | 5 |
| 2017 | 6 | 8 |
| 2018 | 7 | 2 |
| 2019 | 4 | 4 |
| 2020 | 2 | 1 |
| 2021 | 3 | 4 |
| 2022 | 1 | 1 |
| 2023 | 1 | 2 |
| 2024 | 4 | 2 |
| 2025 | 3 | 1 |
| 2026 | 2 | 2 |
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.
- Pump control system for a refuse vehicle27 Jan 2026US 12,534,294 B2Oshkosh Corporation
- Secondary airflow paths for air compressors9 Sep 2025US 12,410,799 B2Doosan Bobcat North America, Inc.
- Submersible centrifual pump having a hydrostatic support including thrust and support disks28 Jan 2025US 12,209,584 B2Lex Sumbersible Pumps Fze
- Method and apparatus for an end seal for increasing efficiency of a submersible multistage labyrinth-screw pump28 Jan 2025US 12,209,585 B2AI Shmookh Business Center
- Vacuum pump24 Sep 2026US 2026/0286961 A1Edwards Limited
- Pump control system for a refuse vehicle14 May 2026US 2026/0131970 A1Oshkosh Corporation
- Screw pump and its components9 Oct 2025US 2025/0314248 A1Illinois Tool Works Inc.
- Secondary airflow paths for air compressors10 Oct 2024US 2024/0337262 A1Doosan Bobcat North America, Inc.
- Method and apparatus for an end seal for increasing efficiency of a submersible multistage labyrinth-screw pump25 Apr 2024US 2024/0133376 A1Lex Submersible Pumps FZE Company
Most cited
By later US patents
- Axial flow fluid compresser32US 4,871,304 AKabushiki Kaisha Toshiba · 1989
- Fluid machinery25US 6,887,058 B2Toshiba Carrier Corporation · 2005
- Axial flow fluid compressor20US 4,875,842 AKabushiki Kaisha Toshiba · 1989
- Fluid compressor18US 4,952,122 AKabushiki Kaisha Toshiba · 1990
- Compressor13US 4,802,827 AKabushiki Kaisha Toshiba · 1989