Inventor · disambiguated record
David Upton Johnson
Also filed as: JOHNSON DAVID U · JOHNSON DAVID UPTON · JOHNSON III DAVID U
3 granted patents·139 citations·filing 1991–1997
75Inventor score
Top patents by PatentIndex Score
3 records- 0191US6082724AVariable speed signature collating apparatusHEIDELBERGER DRUCKMASCH AG·Filed 1997·Granted Jul 4, 2000·105 cites·24 claims
- 0252US5187479ABacklash compensation circuit for use with an incremental encoderAM INT·Filed 1991·Granted Feb 16, 1993·17 cites·11 claims
- 0350US5622268AApparatus for calipering a collated assemblageHEIDELBERG FINISHING SYSTEMS I·Filed 1994·Granted Apr 22, 1997·17 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →