patentgrepDocs Get an API key

G05D 3/1409

With dc amplifier chain

Official title: {with DC amplifier chain}

G05D3/1409 (With dc amplifier chain) appears on 8 US grants and 1 published applications in this corpus.

Search patents in G05D

Granted patents: 8
Published applications: 1
Assignees: 9
Inventors: 16
Latest grant: 3 Dec 2019

Filings by year

G05D 3/1409: granted patents and published applications per publication year
Year	Granted patents	Published applications
1980	1	0
1981	0	0
1982	0	0
1983	1	0
1984	1	0
1985	1	0
1986	0	0
1987	1	0
1988	0	0
1989	0	0
1990	0	0
1991	0	0
1992	0	0
1993	0	0
1994	1	0
1995	0	0
1996	0	0
1997	0	0
1998	0	0
1999	0	0
2000	0	0
2001	0	0
2002	0	0
2003	1	0
2004	0	0
2005	0	0
2006	0	0
2007	0	0
2008	0	0
2009	0	0
2010	0	0
2011	0	0
2012	0	0
2013	0	0
2014	0	0
2015	0	0
2016	0	0
2017	0	0
2018	0	1
2019	1	0

By publication year. Applications have been published since 2001.

Recent patents

Methods, devices and systems for scanning tunneling microscopy control system design3 Dec 2019US 10,495,665 B2Texas and Board of Regents, The University of Texas System
Control device for the position of a valve slide30 Sep 2003US 6,629,020 B1Sauer-Danfoss Holding A/S
Piezoelectric controllable nozzle resistance for hydraulic apparatus24 May 1994US 5,314,118 AMannesmann Rexroth GmbH
Position servo system13 Jan 1987US 4,636,700 AFerranti Limited
Electrically controlled pressure relief valve including a hydraulic bias22 Oct 1985US 4,548,233 AMannesmann Rexroth GmbH

Most cited

By later US patents