F04C 18/34
Having the movement defined in group f04c18/08 or f04c18/22 and relative reciprocation
Official title: having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
F04C18/34 (Having the movement defined in group f04c18/08 or f04c18/22 and relative reciprocation) appears on 1,177 US grants and 1,259 published applications in this corpus.
Search patents in F04C- Granted patents
- 1,177
- Published applications
- 1,259
- Assignees
- 326
- Inventors
- 2,041
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 9 | 0 |
| 1984 | 12 | 0 |
| 1985 | 12 | 0 |
| 1986 | 16 | 0 |
| 1987 | 7 | 0 |
| 1988 | 11 | 0 |
| 1989 | 11 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 11 | 0 |
| 1993 | 8 | 0 |
| 1994 | 9 | 0 |
| 1995 | 5 | 0 |
| 1996 | 14 | 0 |
| 1997 | 10 | 0 |
| 1998 | 11 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 18 | 4 |
| 2002 | 13 | 25 |
| 2003 | 28 | 35 |
| 2004 | 22 | 46 |
| 2005 | 29 | 58 |
| 2006 | 31 | 54 |
| 2007 | 29 | 29 |
| 2008 | 18 | 67 |
| 2009 | 35 | 38 |
| 2010 | 32 | 53 |
| 2011 | 24 | 52 |
| 2012 | 34 | 46 |
| 2013 | 34 | 41 |
| 2014 | 37 | 50 |
| 2015 | 45 | 63 |
| 2016 | 35 | 63 |
| 2017 | 44 | 80 |
| 2018 | 61 | 72 |
| 2019 | 53 | 43 |
| 2020 | 50 | 59 |
| 2021 | 38 | 66 |
| 2022 | 75 | 50 |
| 2023 | 46 | 50 |
| 2024 | 67 | 34 |
| 2025 | 49 | 49 |
| 2026 | 26 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rotary compressor and refrigeration cycle device having the same6 Oct 2026US 12,753,760 B2LG Electronics Inc.
- Vertical type compressor and laundry treating apparatus having the same22 Sep 2026US 12,742,456 B2LG Electronics Inc.
- Compressor unit and refrigeration apparatus1 Sep 2026US 12,723,786 B2Daikin Industries, Ltd.
- Compressor4 Aug 2026US 12,698,771 B2Carrier Japan Corporation
- Compressor28 Jul 2026US 12,692,866 B2LG Electronics Inc.
- Pump8 Oct 2026US 2026/0309152 A1Gebr. Becker GmbH
- Pump body assembly, compressor and air conditioner8 Oct 2026US 2026/0309153 A1Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai
- Rotary compressor8 Oct 2026US 2026/0309155 A1Fujitsu General Limited
- Pump Body Assembly and Rolling Piston Compressor1 Oct 2026US 2026/0298237 A1Shanghai Highly Electrical Appliances Co., Ltd.
- Compliant bearing housing for compressor systems13 Aug 2026US 2026/0235123 A1
Most cited
By later US patents
- Portable medical suction device381US 4,930,997 A1990
- Rotary compressor with reduced lubrication sensitivity147US 5,947,710 ACarrier Corporation · 1999
- Press-fit structure of a shaft74US 4,886,392 ADiesel Kiki Co., Ltd. · 1989
- Vane type compressor having elliptical stator with doubly-offset rotor52US 4,410,305 AThe Rovac Corporation · 1983
- Two stage gas compressor52US 5,322,424 AMatsushita Electric Industrial Co., Ltd. · 1994