F04C 2230/20
Essentially without removing material
Official title: essentially without removing material
F04C2230/20 (Essentially without removing material) appears on 297 US grants and 358 published applications in this corpus.
Search patents in F04C- Granted patents
- 297
- Published applications
- 358
- Assignees
- 195
- Inventors
- 857
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 2 |
| 2002 | 7 | 7 |
| 2003 | 6 | 8 |
| 2004 | 3 | 15 |
| 2005 | 7 | 5 |
| 2006 | 3 | 14 |
| 2007 | 3 | 11 |
| 2008 | 8 | 16 |
| 2009 | 11 | 9 |
| 2010 | 7 | 21 |
| 2011 | 6 | 13 |
| 2012 | 9 | 11 |
| 2013 | 12 | 16 |
| 2014 | 12 | 13 |
| 2015 | 14 | 16 |
| 2016 | 8 | 20 |
| 2017 | 8 | 18 |
| 2018 | 12 | 24 |
| 2019 | 11 | 12 |
| 2020 | 20 | 19 |
| 2021 | 14 | 18 |
| 2022 | 12 | 12 |
| 2023 | 13 | 18 |
| 2024 | 16 | 17 |
| 2025 | 16 | 12 |
| 2026 | 6 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Screw pump and its components2 Jun 2026US 12,644,452 B2Illinois Tool Works Inc.
- Method for producing a housing, and shell housing and housing for a rotary piston engine26 May 2026US 12,637,946 B2Knapp e-mobility GmbH
- Fluid pump with embedded heat dissipating plate17 Mar 2026US 12,577,960 B2Valeo Powertrain GmbH
- Screw pump and its components24 Feb 2026US 12,560,167 B2Illinois Tool Works Inc.
- Compressor including refrigerant introduction tube10 Feb 2026US 12,546,317 B2Daikin Industries, Ltd.
- Electric oil pump, housing body portion, and pump cover1 Oct 2026US 2026/0298227 A1Nidec Powertrain Systems Corporation
- Compliant bearing housing for compressor systems13 Aug 2026US 2026/0235123 A1
- Electric compressor and method for producing same16 Jul 2026US 2026/0201885 A1Sanden Corporation
- Screw pump and its components25 Jun 2026US 2026/0175493 A1Illiois Tool Works Inc.
- Enhanced motor housing for motor and pump system28 May 2026US 2026/0149328 A1
Most cited
By later US patents
- Dry running flexible impeller pump and method of manufacture90US 7,866,942 B22011
- Internally profiled stator tube64US 6,309,195 B1Halliburton Energy Services.Inc. · 2001
- Method for making herringbone gears54US 5,865,239 AMicropump, Inc. · 1999
- Scroll compressor bearing lubrication54US 6,082,495 ACopeland Corporation · 2000
- Reduced rotor assembly diameter vane pump47US 7,997,882 B2MAGNA Powertrain AG & Co KG · 2011