Mark Williams
22Patents
11h-index
13Co-inventors
72Inventor score
Filing activity: Sep 22, 1983 → Jan 11, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6623880B1 | Fuel cell-fuel cell hybrid system | Emerging Cross-Sectional Technologies | 108 | Expired |
| US5541014A | Indirect-fired gas turbine dual fuel cell power cycle | Emerging Cross-Sectional Technologies | 106 | Expired |
| US5413878A | System and method for networking electrochemical devices | Emerging Cross-Sectional Technologies | 86 | Expired |
| US5449568A | Indirect-fired gas turbine bottomed with fuel cell | Emerging Cross-Sectional Technologies | 47 | Expired |
| USD667590S1 | Helmet | General | 34 | Active |
| USD812313S1 | Bump cap liner | General | 22 | Active |
| USD637876S1 | Etching blade | General | 20 | Expired |
| USD841850S1 | Helmet illumination device | General | 16 | Active |
| USD618269S1 | Security camera pedestal mount | General | 13 | Expired |
| USD907859S1 | Visored helmet | General | 13 | Active |
| USD784627S1 | Bump cap impact pad | General | 12 | Active |
| USD907860S1 | Visored helmet | General | 8 | Active |
| US6635375B1 | Planar solid oxide fuel cell with staged indirect-internal air and fuel preheating and reformation | Emerging Cross-Sectional Technologies | 8 | Expired |
| US10687574B2 | Protective headgear | Human Necessities | 6 | Active |
| USD634229S1 | Security system housing | General | 6 | Expired |
| US4498246A | Alcohol/heavy liquid drying of coal | Performing Operations; Transporting | 5 | Expired |
| US11064755B1 | Safety helmet | Human Necessities | 4 | Active |
| USD951550S1 | Visored helmet | General | 4 | Active |
| USD419749S | Winged novelty hat | General | 4 | Expired |
| USD421174S | Ornamental novelty hat | General | 3 | Expired |
| USD950161S1 | Visored helmet | General | 1 | Active |
| USD820657S1 | Extended handle circular saw | General | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.