Robert A. Pranis has been granted 8 US patents while listed as an inventor at 3M . The first was granted in 1989 and the most recent in June 2008. Robert A. Pranis ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Robert A. Pranis in Chaska, MN, US.
Patents per Year Patents granted per year, 1989 to 2008 Bar chart with a peak of 1 patents in 1989. peak 1 1989: 1 patents 1989 1997: 1 patents 1997 1998: 1 patents 1998 2000: 1 patents 2000 2002: 1 patents 2002 2006: 1 patents 2006 2007: 1 patents 2007 2008: 1 patents 2008
Issued Patents All Time
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Showing 1–8 of 8 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
7390666 Methods and devices for measuring total polar compounds in degrading oils Fidelis C. Onwumere , Jack G. Truong 2008-06-24
$15,714,000
7300801 Welded sample preparation articles and methods Craig A. Perman 2007-11-27
$16,584,000
7132079 Methods and devices for measuring total polar compounds in degrading oils Fidelis C. Onwumere , Jack G. Truong 2006-11-07
$24,856,000
6436713 Methods and devices for measuring total polar compounds in degrading oils Fidelis C. Onwumere , Jack G. Truong 2002-08-20
$12,486,000
6018009 Crosslinked isocyanate functional polymer supports Steven M. Heilmann , Gary J. Drtina , Louis C. Haddad , Frederick W. Hyde , Dean M. Moren 2000-01-25
$43,012,000
5760152 Crosslinked isocyanate functional polymer supports Steven M. Heilmann , Gary J. Drtina , Louis C. Haddad , Frederick W. Hyde , Dean M. Moren 1998-06-02
$14,491,000
5679779 Crosslinked isocyanate-functional polymer supports Steven M. Heilmann , Gary J. Drtina , Louis C. Haddad , Frederick W. Hyde , Dean M. Moren 1997-10-21
$24,664,000
4835101 Luminescent analyses with enhanced storage stability Richard Kao , Frank Blocki , Walter C. Mahoney 1989-05-30
