Andreas Wichern has been granted 14 US patents while listed as an inventor at U.S. Philips . The first was granted in 1991 and the most recent in September 2020. Andreas Wichern ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list Andreas Wichern in Hamburg, DE.
Patents per Year Patents granted per year, 1991 to 2020 Bar chart with a peak of 3 patents in 2004. peak 3 1991: 1 patents 1991 1993: 1 patents 1993 1997: 2 patents 1997 1999: 1 patents 1999 2000: 1 patents 2000 2001: 2 patents 2001 2004: 3 patents 2004 2013: 1 patents 2013 2015: 1 patents 2015 2020: 1 patents 2020
Issued Patents All Time
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Showing 1–14 of 14 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
10763786 Differential crystal oscillator Burkhard Dick 2020-09-01
$9,291,000
9065487 Wideband software-defined RF receiver — 2015-06-23
$20,429,000
8594559 Combined satellite radio receiver — 2013-11-26
$7,188,000
6794941 Gain-controlled amplifier with fixed minimum gain Niels Gabriel 2004-09-21
$702,000
6762655 Circuit arrangement — 2004-07-13
$1,015,000
6703886 Circuit arrangement for rectifying a signal — 2004-03-09
$1,097,000
6198359 Oscillator with cross-coupling by diodes — 2001-03-06
6178320 Radio receiver with a double-balanced mixer circuit having signal damping elements Anthony Richards 2001-01-23
6075979 Radio receivers Knud Holtvoeth , Wilfried Knop 2000-06-13
5963082 Circuit arrangement for producing a D.C. current Burkhard Dick 1999-10-05
5648741 Circuit having overall transfer function providing temperature compensation — 1997-07-15
5619152 Circuit arrangement for supplying an alternating signal current Knud Holtvoeth 1997-04-08
5235277 Surface coil for magnetic resonance examinations — 1993-08-10
4998066 MR examination apparatus comprising a circuit for decoupling the two coil systems of a quadrature coil arrangement Christoph Leussler 1991-03-05
