HYDROGENICS CORPORATION
98Patents
49Active
98Granted
56Portfolio score
Filing activity: Jun 13, 2000 → Oct 7, 2023 · 6 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8057646B2 | Electrolyser and components therefor | Emerging Cross-Sectional Technologies | 182 | Active |
| US7141321B2 | System and method for enabling the real time buying and selling of electricity generated by fuel cell powered vehicles | Emerging Cross-Sectional Technologies | 177 | Expired |
| US6673479B2 | System and method for enabling the real time buying and selling of electricity generated by fuel cell powered vehicles | Emerging Cross-Sectional Technologies | 85 | Expired |
| US6833207B2 | Unitized regenerative fuel cell with bifunctional fuel cell humidifier and water electrolyzer | Emerging Cross-Sectional Technologies | 48 | Expired |
| US6852439B2 | Apparatus for and method of forming seals in fuel cells and fuel cell stacks | Emerging Cross-Sectional Technologies | 37 | Expired |
| US6619054B1 | Condenser for dehumidifying gas | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US6519539B1 | Measurement of fuel cell impedance | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6727012B2 | Method and apparatus for generating hydrogen inside of a fuel cell | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6816797B2 | System and method for measuring fuel cell voltage and high frequency resistance | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6541141B1 | Water recovery in the anode side of a proton exchange membrane fuel cell | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6875535B2 | Manifold for a fuel cell system | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7353085B2 | Electrolyzer cell stack system | Emerging Cross-Sectional Technologies | 14 | Expired |
| US7425379B2 | Passive electrode blanketing in a fuel cell | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7018732B2 | System and method for management of gas and water in fuel cell system | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6737184B2 | Chemical hydride hydrogen generation system and an energy system incorporating the same | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6436563B1 | Water recovery, primarily in the cathode side, of a proton exchange membrane fuel cell | Emerging Cross-Sectional Technologies | 9 | Expired |
| US7338545B2 | Apparatus for separating liquid from a process gas stream of an electrochemical cell stack | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7210220B2 | Apparatus for and method of forming seals in fuel cells and fuel stacks | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6602625B1 | Fuel cell with dual end plate humidifiers | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6758981B2 | Method and apparatus for by-product removal in a hydrogen generation system | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6787254B2 | Method and apparatus for humidification and temperature control of incoming fuel cell process gas | Emerging Cross-Sectional Technologies | 7 | Expired |
| US7045230B2 | Chemical hydride hydrogen generation system and fuel cell stack incorporating a common heat transfer circuit | Emerging Cross-Sectional Technologies | 7 | Expired |
| US7432008B2 | Gas diffusion layer for an electrochemical cell | Emerging Cross-Sectional Technologies | 7 | Expired |
| US10181610B2 | Fast starting fuel cell | Emerging Cross-Sectional Technologies | 6 | Active |
| US7117106B2 | System and method for alarm recovery for an electrolyzer cell module | Emerging Cross-Sectional Technologies | 6 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.