H02M 7/21

Using devices of a triode or transistor type requiring continuous application of

Official title: using devices of a triode or transistor type requiring continuous application of a control signal

H02M7/21 (Using devices of a triode or transistor type requiring continuous application of) appears on 3,361 US grants and 3,732 published applications in this corpus.

Search patents in H02M

Granted patents: 3,361
Published applications: 3,732
Assignees: 1,380
Inventors: 6,537
Latest grant: 6 Oct 2026

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H02M 7/21: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	5	0
1977	1	0
1978	4	0
1979	3	0
1980	3	0
1981	3	0
1982	8	0
1983	2	0
1984	5	0
1985	10	0
1986	3	0
1987	10	0
1988	8	0
1989	13	0
1990	7	0
1991	11	0
1992	7	0
1993	9	0
1994	11	0
1995	16	0
1996	22	0
1997	28	0
1998	26	0
1999	36	0
2000	26	0
2001	26	6
2002	36	25
2003	23	22
2004	18	25
2005	14	37
2006	30	31
2007	26	25
2008	14	47
2009	30	51
2010	36	66
2011	39	82
2012	55	88
2013	60	161
2014	106	215
2015	146	217
2016	224	226
2017	236	182
2018	232	232
2019	268	225
2020	232	249
2021	202	286
2022	250	255
2023	212	272
2024	214	255
2025	220	235
2026	135	217

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

Using devices of a triode or transistor type requiring continuous application of

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