patentgrepDocs Get an API key

F24D 11/0257

Air heating system

Official title: {air heating system}

F24D11/0257 (Air heating system) appears on 103 US grants and 46 published applications in this corpus.

Search patents in F24D

Granted patents: 103
Published applications: 46
Assignees: 46
Inventors: 149
Latest grant: 14 Jan 2025

Filings by year

F24D 11/0257: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	5	0
1977	1	0
1978	10	0
1979	10	0
1980	11	0
1981	8	0
1982	9	0
1983	8	0
1984	5	0
1985	0	0
1986	1	0
1987	2	0
1988	2	0
1989	1	0
1990	1	0
1991	2	0
1992	1	0
1993	1	0
1994	0	0
1995	0	0
1996	0	0
1997	0	0
1998	1	0
1999	0	0
2000	0	0
2001	0	0
2002	0	0
2003	0	0
2004	0	0
2005	0	0
2006	0	0
2007	0	0
2008	1	1
2009	0	4
2010	0	1
2011	1	3
2012	0	3
2013	1	3
2014	1	1
2015	0	4
2016	1	0
2017	1	4
2018	5	7
2019	1	2
2020	2	3
2021	4	0
2022	1	4
2023	2	1
2024	2	1
2025	1	1
2026	0	3

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Subgroups

Granted patents

Recent patents

Multi-source heat exchange system employing a ground-energy storage system for controlled environment enclosures14 Jan 2025US 12,193,377 B2Ceres Greenhouse Solutions LLC
High-efficient central chiller plant system with variable load by phase change material thermal energy storage6 Aug 2024US 12,055,303 B2Boca International Limited
Heating and cooling systems and apparatuses with phase change materials28 May 2024US 11,994,348 B2Stash Energy Inc.
Heat recovery apparatus and methods of increasing energy efficiency of hybrid heating systems using the apparatus12 Dec 2023US 11,841,147 B2Rheem Manufacturing Company
Multi-source heat exchange system employing a ground-energy storage system for controlled environment enclosures10 Oct 2023US 11,778,958 B2Ceres Greenhouse Solutions LLC

Most cited

By later US patents