Philip Ma
41Patents
9h-index
36Co-inventors
75Inventor score
Filing activity: Jun 30, 1987 → Sep 1, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6541639B2 | Efficient ligand-mediated Ullmann coupling of anilines and azoles | Chemistry; Metallurgy | 77 | Expired |
| USD842785S1 | Vehicle interior | General | 27 | Active |
| US7153960B2 | Synthesis of 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones | Chemistry; Metallurgy | 19 | Expired |
| USD445466S | Toy vehicle | General | 17 | Expired |
| USD967271S1 | Remote control for a marine vessel | General | 14 | Active |
| USD445465S | Toy vehicle | General | 14 | Expired |
| US6919451B2 | Synthesis of 4,5-dihydro-pyrazolo [3,4-c] pyrid-2-ones | Chemistry; Metallurgy | 14 | Expired |
| USD812777S1 | Ladder | General | 11 | Active |
| USD992642S1 | Remote control for a marine vessel | General | 10 | Active |
| USD455651S1 | Packaging box | General | 8 | Expired |
| US6722891B1 | Magnetic drawing board apparatus | Human Necessities | 8 | Expired |
| USD461124S1 | Packaging box | General | 7 | Expired |
| US6465656B2 | Synthesis of 1,3,5-trisubstituted pyrazoles | Chemistry; Metallurgy | 5 | Expired |
| US6329527A | Synthesis of 1,3,5-trisubstituted pyrazoles | Chemistry; Metallurgy | 5 | Expired |
| USD449658S | Toy aeroplane | General | 5 | Expired |
| USD1062566S1 | Truck interior | General | 4 | Active |
| US7112679B2 | Convergent synthesis of α-aryl-β-ketonitriles | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5314887A | 2-amino-1, 4-dihydropyridine derivatives with calcium agonist and alpha.sub. -antagonist activity | Chemistry; Metallurgy | 3 | Expired |
| US6306886A | Crystalline roxifiban | Human Necessities | 3 | Expired |
| US4868181A | 1,4-dihydropyridine derivatives with calcium agonist and alpha.sub.1 -antagonist activity | Chemistry; Metallurgy | 3 | Expired |
| USD886013S1 | Shade assembly for vehicle window | General | 2 | Active |
| US6624311B2 | Enantioselective enzymatic aminolysis of a racemic 2-isoxazolylacetate alkyl ester | Chemistry; Metallurgy | 2 | Expired |
| US10852390B2 | Multiple polarization radar unit | Emerging Cross-Sectional Technologies | 2 | Active |
| US6107508A | Convergent synthesis of .alpha.-aryl-.beta.-ketonitriles | Chemistry; Metallurgy | 2 | Expired |
| US11644533B2 | Multiple polarization radar unit | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.