F02G 1/043

The engine being operated by expansion and contraction of a mass of

Official title: the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines

F02G1/043 (The engine being operated by expansion and contraction of a mass of) appears on 1,485 US grants and 868 published applications in this corpus.

Search patents in F02G

Granted patents: 1,485
Published applications: 868
Assignees: 503
Inventors: 1,818
Latest grant: 11 Aug 2026

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F02G 1/043: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	45	0
1977	39	0
1978	30	0
1979	24	0
1980	31	0
1981	24	0
1982	28	0
1983	53	0
1984	42	0
1985	36	0
1986	29	0
1987	44	0
1988	30	0
1989	36	0
1990	28	0
1991	29	0
1992	32	0
1993	21	0
1994	21	0
1995	33	0
1996	19	0
1997	17	0
1998	22	0
1999	17	0
2000	23	0
2001	33	10
2002	32	31
2003	38	35
2004	33	49
2005	31	41
2006	31	32
2007	23	25
2008	16	40
2009	17	27
2010	26	48
2011	21	50
2012	21	38
2013	37	50
2014	37	39
2015	25	30
2016	28	43
2017	35	30
2018	36	39
2019	25	28
2020	39	44
2021	39	24
2022	32	35
2023	20	25
2024	27	20
2025	18	19
2026	12	16

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

The engine being operated by expansion and contraction of a mass of

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