Andrew Peter Walker
47Patents
13h-index
62Co-inventors
84Inventor score
Filing activity: Dec 19, 1974 → May 1, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7264785B2 | Selective catalytic reduction | Emerging Cross-Sectional Technologies | 99 | Expired |
| US8667785B2 | Catalysed substrate monolith | Emerging Cross-Sectional Technologies | 51 | Active |
| US7845046B2 | Hand-held cordless vacuum cleaner | Human Necessities | 47 | Active |
| US8652429B2 | Oxidation catalyst for internal combustion engine exhaust gas treatment | Emerging Cross-Sectional Technologies | 41 | Active |
| US7861516B2 | Methods of controlling reductant addition | Emerging Cross-Sectional Technologies | 40 | Active |
| US9005559B2 | Oxidation catalyst for internal combustion engine exhaust gas treatment | Emerging Cross-Sectional Technologies | 33 | Active |
| US8668891B2 | Exhaust system for a lean-burn IC engine comprising a PGM component and a SCR catalyst | Emerging Cross-Sectional Technologies | 21 | Active |
| US9259684B2 | Exhaust system for a lean-burn internal combustion engine including SCR catalyst | Emerging Cross-Sectional Technologies | 15 | Active |
| US9333461B2 | Substrate monolith comprising SCR catalyst | Emerging Cross-Sectional Technologies | 14 | Active |
| US5939028A | Combatting air pollution | Emerging Cross-Sectional Technologies | 14 | Expired |
| US9046022B2 | Catalysed substrate monolith | Emerging Cross-Sectional Technologies | 14 | Active |
| US9597661B2 | Catalysed substrate monolith | Emerging Cross-Sectional Technologies | 14 | Active |
| US5776417A | Emissions control | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6479023B1 | System for converting particulate matter in gasoline engine exhaust gases | Emerging Cross-Sectional Technologies | 13 | Expired |
| US8220251B2 | Exhaust system comprising exotherm-generating catalyst | Emerging Cross-Sectional Technologies | 12 | Active |
| US6634169B1 | Method and system for maintaining efficiency of a three-way catalyst | Emerging Cross-Sectional Technologies | 12 | Expired |
| US9868115B2 | Oxidation catalyst for internal combustion engine exhaust gas treatment | Emerging Cross-Sectional Technologies | 11 | Active |
| US10376867B2 | Oxidation catalyst for internal combustion engine exhaust gas treatment | Emerging Cross-Sectional Technologies | 7 | Active |
| US9545602B2 | Catalytic article for treating exhaust gas | Emerging Cross-Sectional Technologies | 7 | Active |
| US10207254B2 | Catalysed substrate monolith | Emerging Cross-Sectional Technologies | 6 | Active |
| US11330885B2 | Hair drying net and turban towel | Human Necessities | 6 | Active |
| USD957735S1 | Hair drying net and turban towel in combination | General | 6 | Active |
| US10688475B2 | Catalysed substrate monolith | Emerging Cross-Sectional Technologies | 6 | Active |
| USD593191S1 | Fragrant oil burning lamp | General | 5 | Expired |
| USD945108S1 | Shopping cart handle cover | General | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.