HER MAJESTY THE QUEEN IN RIGHT OF CANADA AS REPRESENTED BY THE MINISTER OF NATUAL RESOURCES
634Patents
144Active
634Granted
49Portfolio score
Filing activity: May 9, 1966 → Oct 12, 2022 · 46 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8928544B2 | Wideband circularly polarized hybrid dielectric resonator antenna | Electricity | 275 | Active |
| US5175616A | Stereoscopic video-graphic coordinate specification system | Electricity | 162 | Expired |
| US4409656A | Serial data bus communication system | Physics | 141 | Expired |
| US6026135A | Multisensor vehicle-mounted mine detector | Physics | 138 | Expired |
| US5202939A | Fabry-perot optical sensing device for measuring a physical parameter | Physics | 123 | Expired |
| US5701012A | Fluorescent biological particle detection system | Physics | 120 | Expired |
| US5895922A | Fluorescent biological particle detection system | Physics | 118 | Expired |
| US4247767A | Touch sensitive computer input device | Physics | 104 | Expired |
| US5461476A | Optical apparatus for receiving scattered light | Physics | 96 | Expired |
| US5405766A | Immobilization of biologically active protein on a support with a 7-18 carbon spacer and a bifunctional phospholipid | Emerging Cross-Sectional Technologies | 93 | Expired |
| US5462908A | Organic amine impregnated activated carbon | Emerging Cross-Sectional Technologies | 90 | Expired |
| US4431873A | Diaphragm design for a bender type acoustic sensor | Physics | 85 | Expired |
| US7614352B2 | In-situ capture of carbon dioxide and sulphur dioxide in a fluidized bed combustor | Emerging Cross-Sectional Technologies | 75 | Expired |
| US6495133B1 | Gliocladium roseum strains useful for the control of fungal pathogens in plants | Chemistry; Metallurgy | 71 | Expired |
| US4111217A | Arctic tent pole | Emerging Cross-Sectional Technologies | 70 | Expired |
| US4866441A | Wide band, complex microwave waveform receiver and analyzer, using distributed sampling techniques | Physics | 67 | Expired |
| US6800289B2 | Strain of the western equine encephalitis virus | Chemistry; Metallurgy | 67 | Expired |
| US5876592A | Solvent process for bitumen separation from oil sands froth | Chemistry; Metallurgy | 66 | Expired |
| USD474897S1 | Camouflage pattern applied to material | General | 65 | Expired |
| US6255557A | Stevia rebaudiana with altered steviol glycoside composition | Human Necessities | 65 | Expired |
| US4449781A | Multimode optical fiber coupler | Physics | 62 | Expired |
| US6818748B2 | Cloning, expression, sequencing, and functional enhancement of monoclonal ScFv antibody against Venezuelan equine encephalitis virus (VEE) | Emerging Cross-Sectional Technologies | 55 | Expired |
| US6831279B2 | Laser diode-excited biological particle detection system | Physics | 54 | Expired |
| US4576204A | Laminar flow element | Mechanical Engineering; Lighting; Heating | 54 | Expired |
| US6885241B2 | Type-based baseband predistorter function estimation technique for non-linear circuits | Electricity | 52 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.