Walter C. Pearson has been granted 14 US patents while listed as an inventor at 3M . The first was granted in 1981 and the most recent in August 2002. Walter C. Pearson ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list Walter C. Pearson in Windom, MN, US.
Patents per Year Patents granted per year, 1981 to 2002 Bar chart with a peak of 3 patents in 1983. peak 3 1981: 2 patents 1981 1982: 1 patents 1982 1983: 3 patents 1983 1984: 1 patents 1984 1985: 1 patents 1985 1990: 2 patents 1990 1991: 1 patents 1991 1994: 2 patents 1994 2002: 1 patents 2002
Issued Patents All Time
Profile Widget
Showing 1–14 of 14 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
6439438 Combination for storing and applying heat softenable moisture curable materials Gerald P. Schouten 2002-08-27
$17,412,000
5370273 Multi-component applicator assembly Robert R. Rohloff 1994-12-06
$6,764,000
5288359 Method for adhesively bonding close fitting components Charles W. Stobbie, IV , Gerald W. Quinn 1994-02-22
$12,182,000
5042228 Method and combination for heating and dispensing hot melt materials — 1991-08-27
$8,559,000
4974756 Double barrel dispensing container and cap therefor Neil J. Schwartzbauer 1990-12-04
$10,006,000
4926029 Method and combination for heating and dispensing hot melt materials — 1990-05-15
$8,738,000
4518296 Apparatus for binding sheets together Dorman N. Thompson 1985-05-21
$6,095,000
D273798 Holder for multiple pads of notepaper — 1984-05-08
D271981 Notepaper pad holder — 1983-12-27
D270739 Dual notepaper pad and pen holder — 1983-09-27
D270740 Combined notepaper pad and pen holder — 1983-09-27
4358328 Tape-cutting blade attaching method — 1982-11-09
$9,249,000
D259643 Tape dispenser — 1981-06-23
4270971 Applicator for a double coated tape strip — 1981-06-02
$6,000,000
