F04C 2/1071

The inner and outer member having a different number of threads and

Official title: {the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type}

F04C2/1071 (The inner and outer member having a different number of threads and) appears on 542 US grants and 545 published applications in this corpus.

Search patents in F04C

Granted patents: 542
Published applications: 545
Assignees: 223
Inventors: 857
Latest grant: 8 Sep 2026

Filings by year

F04C 2/1071: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	6	0
1977	4	0
1978	2	0
1979	2	0
1980	4	0
1981	2	0
1982	1	0
1983	3	0
1984	2	0
1985	4	0
1986	5	0
1987	7	0
1988	3	0
1989	2	0
1990	4	0
1991	3	0
1992	9	0
1993	2	0
1994	5	0
1995	5	0
1996	6	0
1997	8	0
1998	10	0
1999	6	0
2000	10	0
2001	9	2
2002	9	5
2003	9	11
2004	3	8
2005	10	18
2006	8	12
2007	4	16
2008	11	18
2009	8	29
2010	11	22
2011	18	27
2012	14	20
2013	16	21
2014	21	26
2015	19	38
2016	17	34
2017	30	23
2018	23	38
2019	33	23
2020	31	26
2021	24	33
2022	29	12
2023	22	23
2024	19	17
2025	21	22
2026	8	21

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

The inner and outer member having a different number of threads and

Filings by year

Subgroups

Recent patents

Most cited