F04D 29/644
Especially adapted for elastic fluid pumps
Official title: {especially adapted for elastic fluid pumps}
F04D29/644 (Especially adapted for elastic fluid pumps) appears on 1,204 US grants and 1,348 published applications in this corpus.
Search patents in F04D- Granted patents
- 1,204
- Published applications
- 1,348
- Assignees
- 514
- Inventors
- 2,472
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 10 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 6 | 0 |
| 2000 | 8 | 0 |
| 2001 | 8 | 1 |
| 2002 | 11 | 11 |
| 2003 | 9 | 12 |
| 2004 | 8 | 23 |
| 2005 | 8 | 26 |
| 2006 | 16 | 19 |
| 2007 | 14 | 13 |
| 2008 | 7 | 48 |
| 2009 | 14 | 49 |
| 2010 | 23 | 39 |
| 2011 | 21 | 38 |
| 2012 | 40 | 37 |
| 2013 | 37 | 65 |
| 2014 | 44 | 65 |
| 2015 | 38 | 84 |
| 2016 | 48 | 90 |
| 2017 | 66 | 87 |
| 2018 | 79 | 90 |
| 2019 | 98 | 61 |
| 2020 | 87 | 76 |
| 2021 | 78 | 72 |
| 2022 | 90 | 72 |
| 2023 | 72 | 78 |
| 2024 | 74 | 63 |
| 2025 | 88 | 61 |
| 2026 | 40 | 68 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mounting device for a fan unit6 Oct 2026US 12,753,777 B2Spectronik Pte. Ltd.
- Handheld camera fan6 Oct 2026US 12,753,778 B1Shenzhen Xinyifang International Trade Co., Ltd.
- Portable fan with hanging portion and adjustment bracket29 Sep 2026US 12,747,733 B1Shenzhen Zhile Interconnection Technology Co., Ltd.
- Assembly system for a portable fan1 Sep 2026US 12,723,599 B2Lasko Operation Holdings, LLC
- Packaged fan18 Aug 2026US 12,710,054 B2Evapco, Inc.
- Spring plunger ceiling fan blade installation system1 Oct 2026US 2026/0298259 A1Hkc-US, LLC
- Fan assembly24 Sep 2026US 2026/0286976 A1Milwaukee Electric Tool Corporation
- Fan lamp24 Sep 2026US 2026/0287169 A1Opple Lighting Co., Ltd.
- Magnetic assembly and vacuum pump17 Sep 2026US 2026/0275991 A1Leybold Aktiengesellschaft
- Fan accessory and waist fan17 Sep 2026US 2026/0276005 A1Shenzhen Luansheng Electronic Technology Co., Ltd
Most cited
By later US patents
- Vibration isolating seal for mounting fans and blowers154US 4,568,243 ABarry Wright Corporation · 1986
- Ventilation fan134US 4,510,851 ABroan Mfg. Co., Inc. · 1985
- Side-vented axial fan and associated fabrication methods124US 5,407,324 ACompaq Computer Corporation · 1995
- Means for engaging a remote control unit to a ceiling fan112US 5,613,832 A1997
- Fan housing assembly97US 4,073,597 AThe Celotex Corporation · 1978