Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
FK

Frederick P. Keller

CECascade Engineering: 6 patents #4 of 69Top 6%
Grand Rapids, MI: #217 of 1,824 inventorsTop 15%
Michigan: #11,873 of 86,293 inventorsTop 15%
Overall (All Time): #655,376 of 4,157,543Top 20%
8 Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
7921782 Individual transportation system Benedikt J. Gaegauf 2011-04-12
6758738 Damper with integral seal 2004-07-06
6547301 Dashmat with an air distribution system 2003-04-15
6245415 Structural article of relatively large dimensions John E. Misner, Dan Fild, Donald E. Jay 2001-06-12
6227840 Apparatus for molding relatively large articles John E. Misner, Dan Fild 2001-05-08
6146565 Method of forming a heat expandable acoustic baffle 2000-11-14
6063315 Gas-assisted injection molding of large panels with sequential gating John E. Misner, Dan Fild 2000-05-16
4496332 Rotary vibration isolator bushing Theodore C. Zwiep 1985-01-29