F04
Positive - displacement machines for liquids
Official title: Positive - displacement machines for liquids; pumps for liquids or elastic fluids
F04 (Positive - displacement machines for liquids) appears on 75,715 US grants and 70,801 published applications in this corpus.
Search patents in F04- Granted patents
- 75,715
- Published applications
- 70,801
- Assignees
- 16,533
- Inventors
- 102,550
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 710 | 0 |
| 1977 | 585 | 0 |
| 1978 | 568 | 0 |
| 1979 | 415 | 0 |
| 1980 | 536 | 0 |
| 1981 | 523 | 0 |
| 1982 | 496 | 0 |
| 1983 | 596 | 0 |
| 1984 | 667 | 0 |
| 1985 | 791 | 0 |
| 1986 | 608 | 0 |
| 1987 | 705 | 0 |
| 1988 | 778 | 0 |
| 1989 | 888 | 0 |
| 1990 | 776 | 0 |
| 1991 | 882 | 0 |
| 1992 | 931 | 0 |
| 1993 | 982 | 0 |
| 1994 | 945 | 0 |
| 1995 | 821 | 0 |
| 1996 | 979 | 0 |
| 1997 | 912 | 0 |
| 1998 | 1049 | 0 |
| 1999 | 1065 | 0 |
| 2000 | 1558 | 0 |
| 2001 | 1676 | 410 |
| 2002 | 1592 | 1411 |
| 2003 | 1612 | 1698 |
| 2004 | 1323 | 2041 |
| 2005 | 1044 | 2211 |
| 2006 | 1250 | 2082 |
| 2007 | 1083 | 1990 |
| 2008 | 1061 | 2320 |
| 2009 | 1047 | 2331 |
| 2010 | 1265 | 2485 |
| 2011 | 1368 | 2243 |
| 2012 | 1932 | 2526 |
| 2013 | 1857 | 3283 |
| 2014 | 2027 | 3573 |
| 2015 | 2242 | 3834 |
| 2016 | 2400 | 3728 |
| 2017 | 2962 | 3878 |
| 2018 | 3163 | 3987 |
| 2019 | 3890 | 3743 |
| 2020 | 3792 | 3745 |
| 2021 | 3246 | 3438 |
| 2022 | 3282 | 3085 |
| 2023 | 2962 | 3034 |
| 2024 | 3177 | 2952 |
| 2025 | 2889 | 2663 |
| 2026 | 1807 | 2110 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subclasses
Granted patents
Recent patents
- Method and apparatus for delivering an API-containing liquid to an edible substrate6 Oct 2026US 12,751,915 B2Transport Authority, Inc.
- CPAP device6 Oct 2026US 12,752,066 B2Murata Manufacturing Co., Ltd.
- Pumping device6 Oct 2026US 12,752,291 B2Tianzhou Medical (Suzhou) Co., Ltd
- Additively manufactured heat exchanger and diffuser pipe coupled to a compressor stage6 Oct 2026US 12,752,921 B2Hamilton Sundstrand Corporation
- Aircraft with an unducted fan propulsor6 Oct 2026US 12,752,923 B2General Electric Company
- Vacuum cleaner with two turbines, and operating method for same8 Oct 2026US 2026/0305892 A1Hilti Aktiengesellschaft
- Implantable electromagnetic pumps8 Oct 2026US 2026/0306297 A1Verily Health Inc.
- Modular multiplatform system for mrna drug production8 Oct 2026US 2026/0306407 A1BioNTech SE
- Pumping system and method for home healthcare devices8 Oct 2026US 2026/0306727 A1
- Evaporator for ambient water bodies, and related system and method8 Oct 2026US 2026/0306964 A1Resource West, Inc.
Most cited
By later US patents
- Robotically-controlled surgical stapling devices that produce formed staples having different lengths2,060US 9,237,891 B2Ethicon Endo-Surgery, Inc. · 2016
- Surgical instrument having a multiple rate directional switching mechanism1,717US 8,534,528 B2Ethicon Endo-Surgery, Inc. · 2013
- Tissue thickness compensator comprising a plurality of medicaments1,690US 9,211,120 B2Ethicon Endo-Surgery, Inc. · 2015
- Surgical instruments with fluid management system1,587US 9,283,045 B2Ethicon Endo-Surgery, Inc. · 2016
- Electroactive polymer devices1,577US 6,545,384 B1SRI International · 2003