HER MAJESTY THE QUEEN IN RIGHT OF CANADA (...)
62Patents
5Active
62Granted
41Portfolio score
Filing activity: Jan 7, 1976 → Oct 25, 2017 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4343047A | Protective helmets | Emerging Cross-Sectional Technologies | 66 | Expired |
| US4716918A | Tent | Fixed Constructions | 58 | Expired |
| US4046939A | Gas resistant foam materials | Emerging Cross-Sectional Technologies | 55 | Expired |
| US4780210A | Tangential flow affinity ultrafiltration | Chemistry; Metallurgy | 46 | Expired |
| US5586411A | Method of preparing a seed treatment composition | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4714486A | Automated production of canisters | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4156981A | Revolver-type repeating gun | Mechanical Engineering; Lighting; Heating | 40 | Expired |
| US5223670A | Hinged door assembly | Fixed Constructions | 39 | Expired |
| US5790598A | Block decision feedback equalizer | Electricity | 37 | Expired |
| US5193396A | Tensile testing apparatus | Physics | 34 | Expired |
| US4886597A | Centrifugal reverse-osmosis desalination unit | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5484464A | Methods and compositions for increasing the benefits of rhizobium inoculation to legume crop productivity | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4665795A | Gun muzzle reference system | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US4440162A | Soda lime half life indicator | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4646615A | Carbon fibre gun barrel | Performing Operations; Transporting | 26 | Expired |
| US4705717A | Tent liners/walls for cold weather operations | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5206171A | Programmable automated inoculator/replicator | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4672438A | Tracking simulator | Physics | 23 | Expired |
| US4490482A | Method for producing a catalyst for oxidizing carbon monoxide | Electricity | 23 | Expired |
| US4827847A | Short range tubular projectile | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US5231982A | Molded nosecup valve assembly | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4045609A | Gas resistant foam materials | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4879561A | Filter system for radar applications | Physics | 17 | Expired |
| US4415728A | .epsilon.-Caprolactone co-polyesters useful for the preparation of polyurethane | Chemistry; Metallurgy | 17 | Expired |
| US4872470A | Portable emergency shelter | Fixed Constructions | 16 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.