John D. Pro has been granted 8 US patents. The first was granted in 1990 and the most recent in March 2014. John D. Pro ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list John D. Pro in Burnsville, MN, US.
Patents per Year Patents granted per year, 1990 to 2014 Bar chart with a peak of 2 patents in 2013. peak 2 1990: 1 patents 1990 1994: 1 patents 1994 1996: 1 patents 1996 2010: 1 patents 2010 2011: 1 patents 2011 2013: 2 patents 2013 2014: 1 patents 2014
Issued Patents All Time
Profile Widget
Showing 1–8 of 8 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
8665565 Trace jumpers for disc drive suspensions Mark A. Miller , Michael E. Roen , Reed T. Hentges , Gregory J. VanHecke 2014-03-04
$1,633,000
8520342 Constant impedance and variable bandwidth traces for an integrated lead suspension Michael E. Roen 2013-08-27
$1,723,000
8379349 Trace jumpers for disc drive suspensions Mark A. Miller , Michael E. Roen , Reed T. Hentges , Gregory J. VanHecke 2013-02-19
$1,053,000
7986494 Integrated lead head suspension with tapered trace spacing — 2011-07-26
$1,221,000
7782572 Disk drive head suspension flexures having alternating width stacked leads — 2010-08-24
$503,000
5530639 Bridge pulse controlled constant current driver for magnetic flowmeter Robert K. Schulz 1996-06-25
$17,875,000
5372045 Bridge pulse controlled constant current driver for magnetic flowmeter Robert K. Schulz 1994-12-13
$27,501,000
4916381 Current source for a variable load with an inductive component George Gelecinskyj , Charles E. Goetzinger 1990-04-10
$21,943,000