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Frederick E. Severson — 25 Patents

QIQs Industries: 10 patents #1 of 3Top 35%
Beaverton, OR: #239 of 3,140 inventorsTop 8%
Oregon: #1,672 of 28,073 inventorsTop 6%
Overall (All Time): #158,593 of 4,157,543Top 4%
25 Patents All Time
Frederick E. Severson has been granted 25 US patents while listed as an inventor at Qs Industries. The first was granted in 1990 and the most recent in December 2016. Frederick E. Severson ranks #158,593 of 4,157,543 US inventors in our database (top 3.8%). Patent records list Frederick E. Severson in Beaverton, OR, US.

Patents per Year

Patents granted per year, 1990 to 2016Bar chart with a peak of 3 patents in 2011.peak 31990: 1 patents19901993: 2 patents1995: 2 patents19951996: 1 patents1997: 2 patents19971998: 2 patents1999: 2 patents19992001: 1 patents2008: 2 patents20082010: 2 patents2011: 3 patents20112012: 1 patents2013: 1 patents20132014: 1 patents2016: 2 patents2016

Issued Patents All Time

Showing 1–25 of 25 patents

Patent #TitleCo-InventorsDate
9511303 Signaling and remote control train operation — 2016-12-06
9449590 Low frequency audio sound effects in model railroading Pat Quinn 2016-09-20
8701562 Signaling and remote control train operation — 2014-04-22
8408143 Sound systems for model railroad locomotives — 2013-04-02
8166887 Sound systems for model railroad locomotives — 2012-05-01
8070108 Signaling and remote control train operation — 2011-12-06
7954435 Sound systems for model railroad locomotives — 2011-06-07
RE42284 Signaling techniques for DC track powered model railroads Patrick A. Quinn 2011-04-12
7859424 Proximity control of on-board processor-based model train sound and control system — 2010-12-28
7770847 Signaling and remote control train operation — 2010-08-10
7451708 Sound systems for model railroad locomotives — 2008-11-18
7429931 Proximity control of on-board processor-based model train sound and control system — 2008-09-30
6230140 Continuous sound by concatenating selected digital sound segments Patrick A. Quinn 2001-05-08
5940005 Method and apparatus for storing and utilizing a unique power down state in a model railroad system Patrick A. Quinn 1999-08-17
5896017 Model train locomotive with doppler shifting of sound effects Patrick A. Quinn 1999-04-20
5832431 Non-looped continuous sound by random sequencing of digital sound records Patrick A. Quinn 1998-11-03
5773939 Command control for model railroading using AC track power signals for encoding pseudo-digital signals Patrick A. Quinn 1998-06-30
5633985 Method of generating continuous non-looped sound effects Patrick A. Quinn 1997-05-27
5590856 Complex switch turn-out arrangements using proximity selection Patrick A. Quinn 1997-01-07
5492290 Model railroad operation using proximity selection Patrick A. Quinn 1996-02-20
5448142 Signaling techniques for DC track powered model railroads Patrick A. Quinn 1995-09-05
5394068 Automatic initialization in a model railroad motor control system Patrick A. Quinn 1995-02-28
5267318 Model railroad cattle car sound effects Patrick A. Quinn 1993-11-30
5184048 Model railroad reversing motor control system Patrick A. Quinn 1993-02-02
4914431 Electronic control system for model railroads Patrick A. Quinn 1990-04-03

Frequent Collaborators

Patrick A. Quinn14 shared
Pat Quinn1 shared

Nearby-Ranked Inventors

John C. Colborn25
Yair A. Neumann25
Eli DAVID25
Olaf Thomas Johan Antonie Vermeulen25
Azadeh Afshar Bakooshli25
Sandeep Bajaj25
Alexander J. Fioravanti25
Joon Hwan Lee25
Akio Murayama25