patentgrepDocs Get an API key

F05D 2220/20

Within closed fluid conduits

Official title: within closed fluid conduits, e.g. pipes

F05D2220/20 (Within closed fluid conduits) appears on 19 US grants and 22 published applications in this corpus.

Search patents in F05D

Granted patents: 19
Published applications: 22
Assignees: 19
Inventors: 68
Latest grant: 24 Feb 2026

Filings by year

F05D 2220/20: granted patents and published applications per publication year
Year	Granted patents	Published applications
2001	1	0
2002	1	0
2003	1	1
2004	1	0
2005	0	1
2006	1	1
2007	0	1
2008	2	0
2009	0	0
2010	0	2
2011	0	2
2012	0	1
2013	0	0
2014	0	0
2015	1	1
2016	0	4
2017	1	2
2018	0	0
2019	4	0
2020	1	1
2021	0	0
2022	0	1
2023	0	0
2024	1	2
2025	2	0
2026	2	2

By publication year. 2026 runs to 8 Oct.

Recent patents

Extended wheel tip and back-disk cavity24 Feb 2026US 12,560,176 B1Garrett Transportation I Inc.
Flame protection seals for gas turbine engines13 Jan 2026US 12,523,175 B1Pratt & Whitney Canada Corp.
Artificial snow-making facility28 Oct 2025US 12,455,105 B2Technoalpin France
Thermal management system for an aircraft27 May 2025US 12,313,002 B2ROLLS-ROYCE plc
Gas turbine engine3 Sep 2024US 12,078,106 B2ROLLS-ROYCE plc

Most cited

By later US patents