F01D 5/18
Hollow blades, i.e. blades with cooling or heating channels or cavities
Official title: Hollow blades, {i.e. blades with cooling or heating channels or cavities (structure of hollow blades in general F01D5/147)}; Heating, heat-insulating or cooling means on blades
F01D5/18 (Hollow blades, i.e. blades with cooling or heating channels or cavities) appears on 4,695 US grants and 4,417 published applications in this corpus.
Search patents in F01D- Granted patents
- 4,695
- Published applications
- 4,417
- Assignees
- 310
- Inventors
- 4,826
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 17 | 0 |
| 1978 | 16 | 0 |
| 1979 | 21 | 0 |
| 1980 | 18 | 0 |
| 1981 | 17 | 0 |
| 1982 | 15 | 0 |
| 1983 | 17 | 0 |
| 1984 | 18 | 0 |
| 1985 | 20 | 0 |
| 1986 | 16 | 0 |
| 1987 | 14 | 0 |
| 1988 | 23 | 0 |
| 1989 | 13 | 0 |
| 1990 | 12 | 0 |
| 1991 | 18 | 0 |
| 1992 | 24 | 0 |
| 1993 | 26 | 0 |
| 1994 | 29 | 0 |
| 1995 | 31 | 0 |
| 1996 | 27 | 0 |
| 1997 | 37 | 0 |
| 1998 | 38 | 0 |
| 1999 | 42 | 0 |
| 2000 | 65 | 0 |
| 2001 | 101 | 24 |
| 2002 | 102 | 80 |
| 2003 | 94 | 74 |
| 2004 | 61 | 70 |
| 2005 | 71 | 128 |
| 2006 | 100 | 95 |
| 2007 | 72 | 99 |
| 2008 | 57 | 103 |
| 2009 | 79 | 108 |
| 2010 | 107 | 145 |
| 2011 | 127 | 109 |
| 2012 | 151 | 130 |
| 2013 | 128 | 200 |
| 2014 | 149 | 220 |
| 2015 | 145 | 237 |
| 2016 | 155 | 398 |
| 2017 | 188 | 385 |
| 2018 | 261 | 363 |
| 2019 | 401 | 309 |
| 2020 | 418 | 317 |
| 2021 | 301 | 221 |
| 2022 | 286 | 156 |
| 2023 | 201 | 140 |
| 2024 | 154 | 115 |
| 2025 | 126 | 108 |
| 2026 | 70 | 83 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Turbine engine with a blade assembly having a set of cooling conduits6 Oct 2026US 12,753,696 B2General Electric Company
- Cooling features for a component of a gas turbine engine6 Oct 2026US 12,753,697 B2Rtx Corporation
- Turbine engine vane baffle6 Oct 2026US 12,753,698 B1Rtx Corporation
- Airfoil having flex elements with compliance structure6 Oct 2026US 12,753,699 B1GE Vernova Infrastructure Technology LLC
- Vane with pin mount and anti-rotation6 Oct 2026US 12,753,703 B2Rtx Corporation
- Turbine engine rotor blade with tip shelf8 Oct 2026US 2026/0309032 A1Rtx Corporation
- Internal baffle for a gas turbine engine vane8 Oct 2026US 2026/0309033 A1Rtx Corporation
- Turbine engine component with a cooling aperture8 Oct 2026US 2026/0309034 A1
- Turbine engine having an airfoil with a set of cooling holes8 Oct 2026US 2026/0309035 A1
- High efficiency power production methods, assemblies, and systems1 Oct 2026US 2026/0298097 A18 Rivers Capital, LLC
Most cited
By later US patents
- Forming structures from CAD solid models580US 6,391,251 B1Optomec Design Company · 2002
- Heat pipe cooling for turbine stators381US 5,975,841 AThermal Corp. · 1999
- Evaporatively cooled rotor for a gas turbine engine345US 5,857,836 AAerodyne Research, Inc. · 1999
- Film cooling hole for turbine airfoil313US 7,997,868 B1Florida Turbine Technologies, Inc. · 2011
- Floating vane turbine nozzle181US 5,630,700 AGeneral Electric Company · 1997