Robert Johnston
21Patents
12h-index
12Co-inventors
78Inventor score
Filing activity: Apr 1, 1985 → Jan 10, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4955358A | Barbecue grill cart assembly | Mechanical Engineering; Lighting; Heating | 49 | Expired |
| US5579755A | Barbecue grill cart assembly | Human Necessities | 40 | Expired |
| US7810487B2 | Apparatus and methods for providing an improved cooking grate for an outdoor cooking grill | Emerging Cross-Sectional Technologies | 40 | Active |
| US4993755A | Quick connect fitting | Mechanical Engineering; Lighting; Heating | 38 | Expired |
| US5452707A | Barbecue grill cart assembly | Mechanical Engineering; Lighting; Heating | 37 | Expired |
| USD438060S | Casting for a barbecue grill | General | 35 | Expired |
| US5566606A | Barbecue grill | Human Necessities | 33 | Expired |
| US4664427A | Quick connect fitting | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5224676A | Universal rotisserie attachment brackets | Human Necessities | 18 | Expired |
| US6523461B1 | Charcoal tray and cooking rack for dual fuel barbeque grill | Emerging Cross-Sectional Technologies | 16 | Expired |
| US8662070B2 | Cooking system for gas grills | Human Necessities | 15 | Active |
| US5421319A | Heating system for barbecue grills and other gas appliances | Human Necessities | 12 | Expired |
| USD341292S | Metal grid | General | 10 | Expired |
| USD639112S1 | Cooking grate | General | 10 | Expired |
| US5613486A | Heating system for barbecue grills and other gas appliances | Human Necessities | 10 | Expired |
| US8602018B2 | Apparatus and method for providing an improved cooking grate for an outdoor grill | Emerging Cross-Sectional Technologies | 7 | Active |
| USD443354S | Diamond shaped gas burner | General | 7 | Expired |
| US5706797A | Heating system for barbecue grills and other gas appliances | Human Necessities | 7 | Expired |
| USD343337S | Universal gas collector box for ignitor | General | 6 | Expired |
| USD660297S1 | Combined hand-held data collector base and detachable scanner | General | 6 | Expired |
| US8430087B2 | Temperature measurement means for cooking appliances | Human Necessities | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.