Westport Research Inc.
29Patents
0Active
29Granted
32Portfolio score
Filing activity: Nov 7, 1997 → Jun 10, 2005
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6202601A | Method and apparatus for dual fuel injection into an internal combustion engine | Emerging Cross-Sectional Technologies | 93 | Expired |
| US5832906A | Intensifier apparatus and method for supplying high pressure gaseous fuel to an internal combustion engine | Emerging Cross-Sectional Technologies | 79 | Expired |
| US6073862A | Gaseous and liquid fuel injector | Emerging Cross-Sectional Technologies | 74 | Expired |
| US6898940B2 | High pressure pump system for supplying a cryogenic fluid from a storage tank | Emerging Cross-Sectional Technologies | 63 | Expired |
| US6547250B1 | Seal assembly with two sealing mechanisms for providing static and dynamic sealing | Emerging Cross-Sectional Technologies | 59 | Expired |
| US5884488A | High pressure fuel supply system for natural gas vehicles | Emerging Cross-Sectional Technologies | 53 | Expired |
| US5996558A | Hydraulically actuated gaseous or dual fuel injector | Emerging Cross-Sectional Technologies | 50 | Expired |
| US6336598B1 | Gaseous and liquid fuel injector with a two way hydraulic fluid control valve | Emerging Cross-Sectional Technologies | 49 | Expired |
| US6640773B2 | Method and apparatus for gaseous fuel introduction and controlling combustion in an internal combustion engine | Emerging Cross-Sectional Technologies | 44 | Expired |
| US6298833A | Fluid seal apparatus and method for dynamically controlling sealing-fluid pressure | Emerging Cross-Sectional Technologies | 44 | Expired |
| US6298829A | Directly actuated injection valve | Emerging Cross-Sectional Technologies | 36 | Expired |
| US6675748B2 | Method and apparatus for fuel injection into an internal combustion engine | Emerging Cross-Sectional Technologies | 36 | Expired |
| US6640556B2 | Method and apparatus for pumping a cryogenic fluid from a storage tank | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US5868122A | Compressed natural gas cylinder pump and reverse cascade fuel supply system | Emerging Cross-Sectional Technologies | 29 | Expired |
| US6575138B2 | Directly actuated injection valve | Emerging Cross-Sectional Technologies | 28 | Expired |
| US6761325B2 | Dual fuel injection valve and method of operating a dual fuel injection valve | Emerging Cross-Sectional Technologies | 28 | Expired |
| US6659730B2 | High pressure pump system for supplying a cryogenic fluid from a storage tank | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6439192B1 | Gaseous and liquid fuel injection valve with concentric needles | Emerging Cross-Sectional Technologies | 19 | Expired |
| US7090145B2 | Liquid cooled fuel injection valve and method of operating a liquid cooled fuel injection valve | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7133761B2 | Method and apparatus for controlling an internal combustion engine using accelerometers | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6584958B2 | Directly actuated injection valve with a ferromagnetic needle | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6564777B2 | Directly actuated injection valve with a composite needle | Emerging Cross-Sectional Technologies | 7 | Expired |
| US7100577B2 | Common rail directly actuated fuel injection valve with a pressurized hydraulic transmission device and a method of operating same | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6589027B2 | Double acting reciprocating motor with uni-directional fluid flow | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US7077115B2 | Direct injection gaseous fuel engine with ignition assist | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.