Inventor · disambiguated record
John C. Venthem
Also filed as: VENTHEM JOHN C
5 granted patents·84 citations·filing 1987–1994
81Inventor score
Top patents by PatentIndex Score
5 records- 0174US5214448ABelt-drive tensioning system which uses a pivoting memberSUMMAGRAPHICS CORP·Filed 1991·Granted May 25, 1993·32 cites·18 claims
- 0271US5267802ARibbon cassette storage and transfer apparatus for a printerSUMMAGRAPHICS CORP·Filed 1992·Granted Dec 7, 1993·30 cites·19 claims
- 0349US4888710APen tip position detectorAMETEK INC·Filed 1987·Granted Dec 19, 1989·10 cites·30 claims
- 0447US5405205ASheet medium transport system, particularly for printers and plottersSUMMAGRAPHICS CORP·Filed 1994·Granted Apr 11, 1995·10 cites·14 claims
- 0529US5333005AApparatus for raising and lowering plotter marking devicesSUMMAGRAPHICS CORP·Filed 1991·Granted Jul 26, 1994·2 cites·14 claims
Join the waitlist — get patent alerts
Get an alert when John C. Venthem files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →