Patrick D. Perkins
20Patents
7h-index
14Co-inventors
66Inventor score
Filing activity: May 17, 1979 → Dec 19, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4654449A | Formation of halogenated hydrocarbons from hydrocarbons | Chemistry; Metallurgy | 35 | Expired |
| US4440668A | Catalyst for the conversion of synthesis gas to higher alcohols | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4476338A | Olefins from methanol and/or dimethyl ether | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4230633A | Novel Fischer-Tropsch catalysts | Chemistry; Metallurgy | 9 | Expired |
| US6608318B1 | Ionization chamber for reactive samples | Electricity | 8 | Expired |
| US4276395A | Novel Fischer-Tropsch catalysts | Chemistry; Metallurgy | 7 | Expired |
| US7304299B2 | Super alloy ionization chamber for reactive samples | Electricity | 7 | Active |
| US4855431A | Process for making alkyl pyrazines | Chemistry; Metallurgy | 5 | Expired |
| US7737395B2 | Apparatuses, methods and compositions for ionization of samples and mass calibrants | Electricity | 3 | Active |
| US4395554A | Process for producing alpha-picoline | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4292415A | Novel Fischer-Tropsch catalysts | Chemistry; Metallurgy | 3 | Expired |
| US6765215B2 | Super alloy ionization chamber for reactive samples | Electricity | 3 | Expired |
| US6545271B1 | Mask plate with lobed aperture | Electricity | 2 | Expired |
| US7148491B2 | Super alloy ionization chamber for reactive samples | Electricity | 2 | Expired |
| US4388461A | Process for producing alpha-picoline | Chemistry; Metallurgy | 2 | Expired |
| US6974956B2 | Super alloy ionization chamber for reactive samples | Electricity | 2 | Expired |
| US7838303B2 | Peptide derivatization method to increase fragmentation information from MS/MS spectra | Emerging Cross-Sectional Technologies | 1 | Active |
| US6717138B2 | Mask plate with lobed aperture | Electricity | 1 | Expired |
| US10546738B1 | Dielectric coated ion transfer device for mass spectrometry | Electricity | 0 | Active |
| US7930108B2 | Exploratory visualization of protein complexes by molecular weight | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.