Inventor · disambiguated record
John Erwin Treft
Also filed as: TREFT JOHN ERWIN
3 granted patents·38 citations·filing 2005–2009
69Inventor score
Technology areasB65G
Files withTKF INC3
Top patents by PatentIndex Score
3 records- 0189US7882944B1Drive belt guard for a roller conveyorTKF INC·Filed 2009·Granted Feb 8, 2011·29 cites·19 claims
- 0258US7306091B2Tapered spline roller for curved roller conveyorTKF INC·Filed 2005·Granted Dec 11, 2007·5 cites·20 claims
- 0356US7963388B2Spline roller for a belt-driven roller conveyor, and method for makingTKF INC·Filed 2007·Granted Jun 21, 2011·4 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →