Inventor · disambiguated record

William Donald Chappell

Also filed as: CHAPPELL WILLIAM DONALD

2 granted patents·6 citations·filing 1998–1999

50Inventor score

Technology areasB41J

Files withUNISYS CORP2

Top patents by PatentIndex Score

2 records

0129US6715853B2System and method for high quality bank check imprintation during high velocity passage of bank checksUNISYS CORP·Filed 1998·Granted Apr 6, 2004·4 cites·4 claims
0227US6533381B1Variable rate ink jet endorserUNISYS CORP·Filed 1999·Granted Mar 18, 2003·2 cites·6 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →