John A. Helmsderfer
54Patents
16h-index
12Co-inventors
81Inventor score
Filing activity: Oct 29, 1993 → Jan 8, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6028627A | Camera system for capturing a sporting activity from the perspective of the participant | Electricity | 201 | Expired |
| US5754999A | Baby diaper changing station | Emerging Cross-Sectional Technologies | 29 | Expired |
| US6619734B2 | Child support device with displaceable seat element | Human Necessities | 27 | Expired |
| US5564463A | Cover assembly for covering undersink piping | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6055688A | Baby diaper changing station with hidden hinge structure | Emerging Cross-Sectional Technologies | 22 | Expired |
| USD378966S | Platform for a baby diaper changing station | General | 22 | Expired |
| US5901739A | Cover assembly with integral securing apparatus for covering undersink piping | Emerging Cross-Sectional Technologies | 21 | Expired |
| USD391794S | Baby diaper changing station | General | 21 | Expired |
| US5341830A | Cover assembly and method for covering undersink piping | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6032310A | Baby diaper changing station with integral flange structure | Emerging Cross-Sectional Technologies | 20 | Expired |
| USD431288S | Undersink shield | General | 19 | Expired |
| USD412634S | Baby diaper changing station | General | 19 | Expired |
| US6010184A | Child support device with removable seat element | Human Necessities | 19 | Expired |
| USD397893S | Baby diaper changing station | General | 19 | Expired |
| USD825716S1 | Sprinkler with fold-out legs | General | 18 | Active |
| US5701929A | Cover assembly having rapid installation features for covering undersink piping | Emerging Cross-Sectional Technologies | 17 | Expired |
| USD408190S | Platform for a baby diaper changing station | General | 16 | Expired |
| USD435893S | Undersink shield | General | 16 | Expired |
| US6224148A | Child support device with removable seat element | Human Necessities | 16 | Expired |
| US5802647A | Baby diaper changing station | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6074007A | Child support device with slidable seat element | Human Necessities | 15 | Expired |
| US6203102A | Child support device with slidable seat element | Human Necessities | 14 | Expired |
| USD412258S | Baby diaper changing station | General | 13 | Expired |
| US5915412A | Cover assembly for covering undersink piping | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6012480A | Cover assembly for covering undersink piping utilizing sliding cover pieces | Emerging Cross-Sectional Technologies | 11 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.