Clive Johnstone
12Patents
5h-index
9Co-inventors
55Inventor score
Filing activity: Nov 2, 2009 → Jul 2, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8757151B2 | Headgear-mountable respirator | Human Necessities | 11 | Active |
| US10687574B2 | Protective headgear | Human Necessities | 6 | Active |
| US11160323B2 | Visor carrier assembly | Human Necessities | 6 | Active |
| USD757248S1 | Respiratory mask filter | General | 5 | Active |
| US8365732B2 | Wearable protective device | Human Necessities | 5 | Active |
| US10709194B2 | Powered air respirator kit | Human Necessities | 4 | Active |
| US9750960B2 | Respiratory mask and filter cartridge therefor | Human Necessities | 2 | Active |
| US11540567B2 | Filter frame | Human Necessities | 1 | Active |
| US11497260B2 | Personal respiratory protection device and method of manufacturing a personal respiratory protection device | Human Necessities | 0 | Active |
| US11510451B2 | Chin strap for a safety helmet | Human Necessities | 0 | Active |
| US11554275B2 | Full face respirator | Human Necessities | 0 | Active |
| US11564841B2 | Hearing protection headset | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.