F04B 1/02
Multi-cylinder machines or pumps characterised by number or arrangement of cylinders: having
Official title: having two cylinders (in V-arrangement F04B1/04)
F04B1/02 (Multi-cylinder machines or pumps characterised by number or arrangement of cylinders: having) appears on 209 US grants and 213 published applications in this corpus.
Search patents in F04B- Granted patents
- 209
- Published applications
- 213
- Assignees
- 147
- Inventors
- 409
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 2 |
| 2003 | 1 | 5 |
| 2004 | 4 | 4 |
| 2005 | 2 | 0 |
| 2006 | 3 | 2 |
| 2007 | 2 | 3 |
| 2008 | 1 | 3 |
| 2009 | 2 | 5 |
| 2010 | 2 | 1 |
| 2011 | 0 | 5 |
| 2012 | 2 | 1 |
| 2013 | 1 | 9 |
| 2014 | 2 | 4 |
| 2015 | 6 | 15 |
| 2016 | 5 | 10 |
| 2017 | 8 | 16 |
| 2018 | 12 | 17 |
| 2019 | 13 | 17 |
| 2020 | 12 | 10 |
| 2021 | 14 | 16 |
| 2022 | 10 | 18 |
| 2023 | 12 | 13 |
| 2024 | 13 | 16 |
| 2025 | 13 | 13 |
| 2026 | 7 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Well service pump systems having offset wrist pins156US 5,839,888 AGeological Equipment Corp. · 1998
- Pump for soil fumigant89US 4,141,676 AJohn Blue Company Division of Subscription Television, Inc. · 1979
- Reverse osmosis method and apparatus88US 4,187,173 A1980
- Rotary shaft driven reverse osmosis method and apparatus83US 4,288,326 A1981
- Connecting rod and crosshead assembly for enhancing the performance of a reciprocating pump69US 10,393,113 B2S,P.M. Flow Control, Inc. · 2019