John Wistrand
26Patents
10h-index
5Co-inventors
64Inventor score
Filing activity: Apr 23, 1976 → Nov 5, 1993
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD258097S | Holder for dental plaque detection system | General | 90 | Expired |
| US4744895A | Reverse osmosis water purifier | Performing Operations; Transporting | 47 | Expired |
| USD277417S | Hair dryer with attachments | General | 42 | Expired |
| USD260008S | Personal security alarm | General | 24 | Expired |
| USD299279S | Hair brush | General | 19 | Expired |
| US5076299A | Flexible locking hair curler | Human Necessities | 17 | Expired |
| USD360104S | Bread making machine | General | 17 | Expired |
| USD283853S | Lighted mirror | General | 14 | Expired |
| USD281360S | Hair dryer | General | 13 | Expired |
| USD304207S | Coupon dispensing terminal | General | 12 | Expired |
| USD332155S | Combined heating base, hair curlers, and cover therefor | General | 9 | Expired |
| USD263001S | Dryer and combined comb attachment | General | 9 | Expired |
| USD247630S | Dryer | General | 8 | Expired |
| USD247980S | Dryer comb concentrator attachment | General | 8 | Expired |
| USD253074S | Dryer | General | 8 | Expired |
| USD252952S | Dryer with concentrator attachment | General | 8 | Expired |
| USD252472S | Dryer | General | 8 | Expired |
| USD299278S | Soft handle curling iron | General | 6 | Expired |
| USD247979S | Dryer | General | 5 | Expired |
| USD289090S | Hairsetter | General | 5 | Expired |
| USD259066S | Tray for manicure and pedicure implement kit | General | 5 | Expired |
| USD263173S | Hair dryer | General | 4 | Expired |
| USD247981S | Dryer stand | General | 4 | Expired |
| USD290530S | Hairsetter | General | 4 | Expired |
| USD325104S | Hair curler | General | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.