Andrew Murphy
35Patents
9h-index
33Co-inventors
75Inventor score
Filing activity: Sep 1, 1987 → Apr 28, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4806264A | Method of selectively removing selenium ions from an aqueous solution | Emerging Cross-Sectional Technologies | 29 | Expired |
| USD632375S1 | Air blowers | General | 24 | Expired |
| US7806275B2 | Chlorine resistant polyamides and membranes made from the same | Emerging Cross-Sectional Technologies | 24 | Active |
| US5603844A | Instant, chemical-free dechlorination of water supplies | Chemistry; Metallurgy | 18 | Expired |
| US5404834A | Temperature indicating device | Physics | 16 | Expired |
| US5089141A | Chemical process for removing selenium from water | Emerging Cross-Sectional Technologies | 15 | Expired |
| USD666288S1 | Window in turbo unit cover | General | 12 | Active |
| USD657445S1 | Belt | General | 9 | Expired |
| US9744493B2 | Air filtration device | Performing Operations; Transporting | 9 | Active |
| US8936022B2 | Air delivery apparatus for respirator hood | Human Necessities | 8 | Active |
| US9119979B2 | Method of controlling a powered air purifying respirator | Emerging Cross-Sectional Technologies | 8 | Active |
| US10137320B2 | Respirator flow control apparatus and method | Human Necessities | 8 | Active |
| US5863444A | Water denitrification process using air stripping (REC-3603) | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5322800A | Method and device for safely preserving aqueous field samples using acid or base | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5069800A | Chemical process for the denitrification of water | Emerging Cross-Sectional Technologies | 5 | Expired |
| USD739007S1 | Powered air purifying respirator unit control panel | General | 5 | Active |
| US5332509A | Chemical process for removing organometallic compounds from water | Emerging Cross-Sectional Technologies | 5 | Expired |
| US10441828B2 | Powered air-purifying respirator | Human Necessities | 4 | Active |
| US10391337B2 | Respirator assembly with air flow direction control | Human Necessities | 3 | Active |
| US8807275B2 | Sound absorbent barrier | Fixed Constructions | 3 | Active |
| US11413479B2 | Method of controlling a powered air purifying respirator | Human Necessities | 2 | Active |
| US5244581A | Chemical process for the catalytic oxidation of formaldehyde and other organic compounds | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6176899A | Water treatment process for neutralizing gas supersaturation | Performing Operations; Transporting | 2 | Expired |
| US11130008B2 | Respirator flow control apparatus and method | Human Necessities | 2 | Active |
| USD739008S1 | Powered air purifying respirator unit cover | General | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.