Norbert Lui
120Patents
8h-index
128Co-inventors
83Inventor score
Filing activity: Apr 15, 1993 → Sep 19, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6358887B1 | 2-Phenyl-substituted heterocyclic 1,3-ketonols as herbicides and pesticides | Chemistry; Metallurgy | 80 | Expired |
| US6162943A | Method for producing .alpha.-alkoxy-.alpha.-trifluoromethyl-aryl acetic esters and -aryl acetic acids | Chemistry; Metallurgy | 24 | Expired |
| US5463150A | Process for preparing hexafluorobutene | Chemistry; Metallurgy | 18 | Expired |
| US6706911B1 | Preparation of 2-haloacyl-3-aminoacrylic acid derivatives | Chemistry; Metallurgy | 16 | Expired |
| US5922507A | Imaging element comprising a two-phase layer having a disperse hydrophobic photopolymerisable phase | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6229017A | Process for preparing quinolone- and naphthyridone- carboxylic acids and esters thereof | Chemistry; Metallurgy | 10 | Expired |
| US6746990B2 | 2-phenyl-substituted heterocyclic 1,3-ketoenols as herbicides and pesticides | Chemistry; Metallurgy | 9 | Expired |
| US8772266B2 | Fungicide pyrazole carboxamides derivates | Chemistry; Metallurgy | 9 | Active |
| US5672787A | Process for preparing 1,1,1,4,4,4-hexafluorobutane in the liquid phase | Chemistry; Metallurgy | 7 | Expired |
| US5932760A | (Meth)acrylates containing fluoroalkenyl groups, their preparation and use | Chemistry; Metallurgy | 6 | Expired |
| US8093421B2 | Stereoselective one step fluorination process for the preparation of 2-flouropropionate | Chemistry; Metallurgy | 6 | Active |
| US8350053B2 | Process for the regioselective preparation of 1-alkyl-3-haloalkylpyrazole-4-carboxylic acid derivatives | Chemistry; Metallurgy | 6 | Active |
| US6034116A | Mixtures of substituted benzimidazoles with polyether antibiotics or synthetic coccidiostats as agents for use against parasitic protozoa | Human Necessities | 5 | Expired |
| US6265430A | 3-thiocarbamoylpyrazole derivatives as pesticides | Chemistry; Metallurgy | 5 | Expired |
| US8629288B2 | Method for the regioselective synthesis of 1-alky1-3-haloalkyl-pyrazole-4-carboxylic acid derivatives | Chemistry; Metallurgy | 5 | Active |
| US8436191B2 | Preparing 5-fluoro-1-alkyl-3-fluoroalkyl-1H-pyrazole-4-carbonyl chlorides | Chemistry; Metallurgy | 4 | Active |
| US5621111A | Process for the preparation of side chain-fluorinated alkyloxazoles, and new side chain-fluorinated alkyloxazoles | Chemistry; Metallurgy | 4 | Expired |
| US5315047A | Process for the preparation of hexafluorobutane, and intermediates thereby obtainable | Chemistry; Metallurgy | 4 | Expired |
| US8324393B2 | Method for producing 2,2-difluoroethylamine derivatives by imine hydrogenation | Chemistry; Metallurgy | 4 | Active |
| US8765971B2 | Preparing 5-fluoro-1-alkyl-3-fluoroalkyl-1H-pyrazole-4-carbaldehydes | Chemistry; Metallurgy | 4 | Active |
| US5523497A | Process for preparing hexafluorochlorobutenes | Chemistry; Metallurgy | 4 | Expired |
| US6013664A | Microbicidal agents based on thiophene-2-carboxylic acid derivatives | Human Necessities | 3 | Expired |
| US8455689B2 | Process for preparing substituted biphenylanilides | Chemistry; Metallurgy | 3 | Active |
| US8592605B2 | Method for the regioselective synthesis of 1-Alkyl-3-haloalkyl-pyrazole-4-carboxylic acid derivatives | Chemistry; Metallurgy | 3 | Active |
| US8466293B2 | Process for preparing 2,2-difluoroethylamine derivatives by alkylation with 2,2-difluoroethyl-1-haloethanes | Chemistry; Metallurgy | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.