KL

Kenneth Wayne Leffew

EA E.I. Du Pont De Nemours And: 25 patents #198 of 8,010Top 3%
IS Invista North America S.A.R.L.: 1 patents #169 of 403Top 45%
PO Philips And Du Pont Optical: 1 patents #3 of 18Top 20%
Xerox: 1 patents #5,237 of 8,622Top 65%
📍 Kennett Square, PA: #20 of 289 inventorsTop 7%
🗺 Pennsylvania: #2,031 of 74,527 inventorsTop 3%
Overall (All Time): #139,504 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 26–28 of 28 patents

Patent #TitleCo-InventorsDate
4804556 Edge thickness control system Joseph D. Trentacosta 1989-02-14
4804557 Thickness control system having a duty cycle controller John D. Anthony, Jr. 1989-02-14
4765941 Thickness control system for an extrusion coating apparatus John D. Anthony, Jr., Joseph D. Trentacosta 1988-08-23