Inventor · disambiguated record
John A. Helmsderfer
Also filed as: HELMSDERFER JOHN · HELMSDERFER JOHN A
54 granted patents·11 pending applications·1,162 citations·filing 1993–2018
99Inventor score
Files withHELMSDERFER JOHN A20PARTNERS IN INNOVATION LTD LLC7HELMSDERFER JOHN5TOMCANY BRIAN4MCGUIRE MANUFACTURING CO INC3
Top patents by PatentIndex Score
65 records- 0198US6028627ACamera system for capturing a sporting activity from the perspective of the participantFiled 1997·Granted Feb 22, 2000·283 cites·10 claims
- 0290US6619734B2Child support device with displaceable seat elementFiled 2001·Granted Sep 16, 2003·48 cites·7 claims
- 0388US9724708B2Garden watering deviceHELMSDERFER JOHN·Filed 2012·Granted Aug 8, 2017·13 cites·20 claims
- 0488US8910887B2Garden watering deviceHELMSDERFER JOHN A·Filed 2011·Granted Dec 16, 2014·10 cites·10 claims
- 0586US5754999ABaby diaper changing stationFiled 1996·Granted May 26, 1998·63 cites·14 claims
- 0683US9597699B2Water flow metering deviceHELMSDERFER JOHN·Filed 2012·Granted Mar 21, 2017·10 cites·13 claims
- 0782USD391794SBaby diaper changing stationHELMSDERFER JOHN A·Filed 1996·Granted Mar 10, 1998·24 cites·1 claims
- 0882USD378966SPlatform for a baby diaper changing stationHELMSDERFER JOHN A·Filed 1995·Granted Apr 29, 1997·25 cites·1 claims
- 0979US8739843B2Multi-functional and modular tree removal and maintenance apparatus and related methodsHELMSDERFER JOHN·Filed 2012·Granted Jun 3, 2014·9 cites·19 claims
- 1079USD431288SUndersink shieldTRUEBRO INC·Filed 1999·Granted Sep 26, 2000·21 cites·1 claims
- 1178US10525487B2Garden watering deviceHELMSDERFER JOHN A·Filed 2017·Granted Jan 7, 2020·2 cites·12 claims
- 1278USD412634SBaby diaper changing stationHELMSDERFER JOHN A·Filed 1998·Granted Aug 10, 1999·21 cites·1 claims
- 1376USD825716SSprinkler with fold-out legsHELMSDERFER JOHN A·Filed 2017·Granted Aug 14, 2018·18 cites·1 claims
- 1476USD397893SBaby diaper changing stationHELMSDERFER JOHN A·Filed 1997·Granted Sep 8, 1998·19 cites·1 claims
- 1575USD435893SUndersink shieldTRUEBRO INC·Filed 1999·Granted Jan 2, 2001·18 cites·1 claims
- 1672US7165278B2Patient immobilization deviceTOMCANY BRIAN·Filed 2005·Granted Jan 23, 2007·8 cites·5 claims
- 1771US7426761B2Patient immobilization deviceTOMCANY BRIAN·Filed 2005·Granted Sep 23, 2008·14 cites·15 claims
- 1871US5901739ACover assembly with integral securing apparatus for covering undersink pipingFiled 1996·Granted May 11, 1999·29 cites·23 claims
- 1971USD408190SPlatform for a baby diaper changing stationHELMSDERFER JOHN A·Filed 1998·Granted Apr 20, 1999·16 cites·1 claims
- 2069US5564463ACover assembly for covering undersink pipingFiled 1994·Granted Oct 15, 1996·34 cites·21 claims
- 2168US7426765B2Baby diaper changing stationHELMSDERFER JOHN A·Filed 2007·Granted Sep 23, 2008·6 cites·23 claims
- 2268US6055688ABaby diaper changing station with hidden hinge structureHELMSDERFER JOHN A·Filed 1998·Granted May 2, 2000·40 cites·5 claims
- 2366US7260859B2Baby diaper changing stationHELMSDERFER JOHN A·Filed 2005·Granted Aug 28, 2007·5 cites·13 claims
- 2466USD412258SBaby diaper changing stationHELMSDERFER JOHN A·Filed 1998·Granted Jul 27, 1999·13 cites·1 claims
- 2565US6032310ABaby diaper changing station with integral flange structureHELMSDERFER JOHN A·Filed 1998·Granted Mar 7, 2000·36 cites·7 claims
- 2665US5802647ABaby diaper changing stationFiled 1995·Granted Sep 8, 1998·36 cites·12 claims
- 2763US10757872B2Multi-functional and modular tree removal and maintenance apparatus and related methodsPARTNERS IN INNOVATION LTD LLC·Filed 2018·Granted Sep 1, 2020·1 cites·15 claims
- 2863US6012480ACover assembly for covering undersink piping utilizing sliding cover piecesFiled 1998·Granted Jan 11, 2000·21 cites·10 claims
- 2963US6010184AChild support device with removable seat elementHELMSDERFER JOHN A·Filed 1998·Granted Jan 4, 2000·26 cites·14 claims
- 3061US6224148B1Child support device with removable seat elementHELMSDERFER JOHN A·Filed 1999·Granted May 1, 2001·24 cites·12 claims
- 3160US7036167B2Patient immobilization deviceTOMCANY BRIAN·Filed 2002·Granted May 2, 2006·13 cites·40 claims
- 3259US6859966B2Baby diaper changing stationFiled 2002·Granted Mar 1, 2005·12 cites·26 claims
- 3359US5701929ACover assembly having rapid installation features for covering undersink pipingFiled 1996·Granted Dec 30, 1997·20 cites·17 claims
- 3457USD409728SInsulative cover for undersink pipingHELMSDERFER JOHN A·Filed 1997·Granted May 11, 1999·9 cites·1 claims
- 3556US6074007AChild support device with slidable seat elementHELMSDERFER JOHN A·Filed 1998·Granted Jun 13, 2000·21 cites·10 claims
- 3655US5915412ACover assembly for covering undersink pipingFiled 1997·Granted Jun 29, 1999·20 cites·7 claims
- 3754US5678598ACover assembly and method for covering undersink pipingFiled 1996·Granted Oct 21, 1997·12 cites·6 claims
- 3854US2015097059A1Garden watering devicePARTNERS IN INNOVATION LTD LTD·Filed 2014·Application pending·0 cites
- 3953US6203102B1Child support device with slidable seat elementFiled 1999·Granted Mar 20, 2001·18 cites·9 claims
- 4053USD416155SPortion of a base for a baby diaper changing stationHELMSDERFER JOHN A·Filed 1998·Granted Nov 9, 1999·8 cites·1 claims
- 4152US5586568ACover assembly and method for covering undersink pipingFiled 1994·Granted Dec 24, 1996·12 cites·14 claims
- 4251US2014261888A1Multi-functional and modular tree removal and maintenance apparatus and related methodsPARTNERS IN INNOVATION LTD LLC·Filed 2014·Application pending·0 cites
- 4350US5685328ACover assembly and method for covering undersink pipingFiled 1995·Granted Nov 11, 1997·11 cites·15 claims
- 4449US2007157380A1Baby diaper changing stationHELMSDERFER JOHN A·Filed 2006·Application pending·0 cites
- 4548US5341830ACover assembly and method for covering undersink pipingBROCAR PRODUCTS INC·Filed 1993·Granted Aug 30, 1994·23 cites·51 claims
- 4648US2007101501A1Patient immobilization deviceTOMCANY BRIAN·Filed 2006·Application pending·0 cites
- 4747US6049928ABaby diaper changing stationFiled 1998·Granted Apr 18, 2000·19 cites·17 claims
- 4847US5649566ACover assembly and method for covering undersink pipingFiled 1996·Granted Jul 22, 1997·9 cites·4 claims
- 4946US5915413ACover assembly with integral measurement indicia for covering undersink pipingFiled 1997·Granted Jun 29, 1999·13 cites·13 claims
- 5046US2016345515A1Water management control device for watering devicesPARTNERS IN INNOVATION LTD LLC·Filed 2016·Application pending·0 cites
Showing the top 50 of 65 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when John A. Helmsderfer 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 →