F04C 18/082
Details specially related to intermeshing engagement type pumps
Official title: {Details specially related to intermeshing engagement type pumps}
F04C18/082 (Details specially related to intermeshing engagement type pumps) appears on 352 US grants and 335 published applications in this corpus.
Search patents in F04C- Granted patents
- 352
- Published applications
- 335
- Assignees
- 168
- Inventors
- 622
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 7 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 13 | 4 |
| 2002 | 10 | 11 |
| 2003 | 13 | 13 |
| 2004 | 9 | 14 |
| 2005 | 10 | 22 |
| 2006 | 10 | 9 |
| 2007 | 9 | 10 |
| 2008 | 6 | 18 |
| 2009 | 14 | 7 |
| 2010 | 9 | 20 |
| 2011 | 6 | 8 |
| 2012 | 9 | 13 |
| 2013 | 8 | 7 |
| 2014 | 11 | 15 |
| 2015 | 10 | 15 |
| 2016 | 9 | 14 |
| 2017 | 12 | 10 |
| 2018 | 12 | 10 |
| 2019 | 10 | 25 |
| 2020 | 5 | 12 |
| 2021 | 11 | 14 |
| 2022 | 11 | 11 |
| 2023 | 12 | 10 |
| 2024 | 25 | 27 |
| 2025 | 22 | 10 |
| 2026 | 3 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vacuum pump assembly with improved process by-product holding capacity1 Sep 2026US 12,723,588 B2Beijing Grand Hitek. Co., Ltd.
- Supercharged internal combustion engine with intake port timing shutters controlling the air mass flowing into the supercharger31 Mar 2026US 12,590,584 B2
- Device for painting a compressor or vacuum pump housing and method applied3 Mar 2026US 12,564,854 B2Atlas Copco Airpower, Naamloze Vennootschap
- Screw compressor and refrigeration apparatus25 Nov 2025US 12,480,492 B2Daikin Industries, Ltd.
- Complex screw rotors with a central circular cross section connecting right-hand and left-hand sections of the rotors4 Nov 2025US 12,460,640 B2Industrial Technologies and Services, LLC
- Air Compressor30 Jul 2026US 2026/0218705 A1Hitachi Industrial Equipment Systems Co., Ltd.
- Scroll compressor16 Jul 2026US 2026/0201882 A1Hanon Systems
- Complex screw rotors28 May 2026US 2026/0146608 A1
- Screw Fluid Machine29 Jan 2026US 2026/0028987 A1Hitachi Industrial Equipment Systems Co., Ltd.
- Multi-stage hook and claw compressor assembly15 Jan 2026US 2026/0016011 A1
Most cited
By later US patents
- Scroll compressor with bypass holes communicating with an intake chamber65US 7,344,365 B2Mitsubishi Heavy Industries, Ltd. · 2008
- Hair treatment method56US 6,916,316 B22005
- Evacuating apparatus40US 5,709,537 AMatsushita Electric Industrial Co., Ltd. · 1998
- Method for coating metal part with synthetic resin including post coating step for heating coated part to eleminate voids38US 4,911,949 AToyota Jidosha Kabushiki Kaisha · 1990
- Scroll air supply apparatus having a motor shaft and a mechanism shaft34US 6,887,051 B2Matsushita Electric Industrial Co., Ltd. · 2005