F04D 29/4213
Suction ports
Official title: {suction ports}
F04D29/4213 (Suction ports) appears on 762 US grants and 831 published applications in this corpus.
Search patents in F04D- Granted patents
- 762
- Published applications
- 831
- Assignees
- 368
- Inventors
- 1,798
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 8 | 0 |
| 1995 | 7 | 0 |
| 1996 | 7 | 0 |
| 1997 | 3 | 0 |
| 1998 | 10 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 5 |
| 2002 | 9 | 13 |
| 2003 | 16 | 6 |
| 2004 | 9 | 11 |
| 2005 | 7 | 22 |
| 2006 | 7 | 19 |
| 2007 | 13 | 16 |
| 2008 | 10 | 20 |
| 2009 | 11 | 22 |
| 2010 | 7 | 22 |
| 2011 | 15 | 21 |
| 2012 | 26 | 28 |
| 2013 | 17 | 26 |
| 2014 | 18 | 39 |
| 2015 | 17 | 45 |
| 2016 | 31 | 51 |
| 2017 | 42 | 34 |
| 2018 | 44 | 54 |
| 2019 | 60 | 72 |
| 2020 | 50 | 58 |
| 2021 | 46 | 58 |
| 2022 | 52 | 51 |
| 2023 | 56 | 45 |
| 2024 | 41 | 39 |
| 2025 | 36 | 31 |
| 2026 | 14 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Casing treatment system and method8 Sep 2026US 12,729,696 B2Purdue Research Foundation
- Neck fan18 Aug 2026US 12,710,047 B1Shenzhen Jisu Technology Co., Ltd
- Rotary inflating and deflating pump30 Jun 2026US 12,669,132 B2Boluo Futian Fumao plastic hardware products Co., Ltd.
- Inflator having combined cutwater and intake/exhaust port23 Jun 2026US 12,663,017 B2Techtronic Cordless GP
- Fan cover16 Jun 2026US 12,655,854 B2ABB Schweiz AG
- Noise reduction air inlet bypass recirculation structure of compressor8 Oct 2026US 2026/0309167 A1Harbin Engineering University
- Impeller17 Sep 2026US 2026/0276000 A1Honeywell International Inc.
- Noise attenuation for nuclear imaging system27 Aug 2026US 2026/0251158 A1Siemens Medical Solutions USA, Inc.
- Inlet nozzle for fans20 Aug 2026US 2026/0243272 A1Ziehl-Abegg SE
- Centrifugal compressor and turbocharger13 Aug 2026US 2026/0235140 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
Most cited
By later US patents
- Centrifugal compressor75US 4,212,585 ANorthern Research & Engineering Corp. · 1980
- Turbomachine70US 5,707,206 AEbara Corporation · 1998
- Compressors67US 4,743,161 AHolset Engineering Company Limited · 1988
- Device for extending the performances of a radial compressor65US 4,990,053 AAsea Brown Boveri AG · 1991
- Airflow measuring centrifugal fan63US 5,586,861 APace Incorporated · 1996