Inventor · disambiguated record
David A. Purcell
Also filed as: PURCELL DAVID · PURCELL DAVID A · PURCELL DAVID ALLEN
11 granted patents·3 pending applications·804 citations·filing 1995–2022
93Inventor score
Top patents by PatentIndex Score
14 records- 0198US6375298B2Intelligent printer components and printing systemENCAD INC·Filed 2001·Granted Apr 23, 2002·145 cites·9 claims
- 0298US6227643B1Intelligent printer components and printing systemENCAD INC·Filed 1998·Granted May 8, 2001·360 cites·10 claims
- 0396US9585807B2Collapsible upright wheeled walker apparatusPROTOSTAR INC·Filed 2016·Granted Mar 7, 2017·33 cites·7 claims
- 0494US10828226B2Collapsible upright wheeled walker apparatusPROTOSTAR INC·Filed 2020·Granted Nov 10, 2020·4 cites·19 claims
- 0594US5686947AInk jet printer incorporating high volume ink reservoirsENCAD INC·Filed 1995·Granted Nov 11, 1997·103 cites·18 claims
- 0693US10555866B2Wheeled walker wheel direction lock apparatus and methodPROTOSTAR INC A DELAWARE CORP·Filed 2018·Granted Feb 11, 2020·20 cites·19 claims
- 0791US10588815B2Collapsible upright wheeled walker apparatusPROTOSTAR INC·Filed 2019·Granted Mar 17, 2020·6 cites·15 claims
- 0891US10085909B2Collapsible upright wheeled walker apparatusPROTOSTAR INC A DELAWARE CORP·Filed 2017·Granted Oct 2, 2018·6 cites·11 claims
- 0990US6347857B1Ink droplet analysis apparatusENCAD INC·Filed 1999·Granted Feb 19, 2002·82 cites·33 claims
- 1084US6565197B1Ink jet printer incorporating high volume ink reservoirsENCAD INC·Filed 1997·Granted May 20, 2003·43 cites·5 claims
- 1183US10322056B2Collapsible upright wheeled walker apparatusPROTOSTAR INC A DELAWARE CORP·Filed 2018·Granted Jun 18, 2019·2 cites·20 claims
- 1254US2023337873A1Portable urination apparatusUNIGENT CO·Filed 2022·Application pending·0 cites
- 1346US2017258664A1Upright walker having a user safety system employing haptic feedbackPROTOSTAR INC A DELAWARE CORP·Filed 2017·Application pending·0 cites
- 1441US2019191205A1Video system with second screen interactionAT & T IP I LP·Filed 2017·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →