Nucellsys GmbH
38Patents
6Active
38Granted
36Portfolio score
Filing activity: Dec 3, 1998 → Oct 17, 2005 · 6 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7387983B2 | Methanol reforming catalyst having a reduced volume shrinkage | Emerging Cross-Sectional Technologies | 22 | Expired |
| US7449259B2 | Power converter architecture and method for integrated fuel cell based power supplies | Emerging Cross-Sectional Technologies | 17 | Expired |
| US7147836B2 | Device for evaporating a liquid | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7247401B2 | Method and apparatus for operating a fuel cell system | Emerging Cross-Sectional Technologies | 9 | Expired |
| US7057306B2 | Fuel cell and control unit in a detachable housing | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7317316B2 | Apparatus and method for measuring the insulation resistance of a fuel cell system | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7709977B2 | Method and arrangement for controlling a switching connection between the electrical outputs of a fuel cell and an isolated electrical network | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7051518B2 | Internal combustion engine fuel supply system | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7090807B1 | Device for selective catalytic oxidation of carbon monoxide | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7340437B2 | Circuit configuration and method for identifying error situations in interconnected systems | Physics | 3 | Expired |
| US7063906B2 | Fuel cell system and method for operating the same | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7163566B2 | Method of operating a gas generating system and a gas generating system | Chemistry; Metallurgy | 2 | Expired |
| US7395854B2 | Systems and methods for controlling cooling fluid temperature in a fuel cell engine | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7152394B2 | System and method for reducing nitrogen oxides in the exhaust of an internal combustion engine | Emerging Cross-Sectional Technologies | 2 | Expired |
| US8043755B2 | Fuel cell based power generation systems and methods of operating the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US7481984B1 | System for heating and/or converting at least one medium | Emerging Cross-Sectional Technologies | 1 | Expired |
| US7056361B1 | Gas producing system | Emerging Cross-Sectional Technologies | 1 | Expired |
| US7001575B2 | Device for feeding educts to parallel spaces | Emerging Cross-Sectional Technologies | 1 | Expired |
| US8841040B2 | Method to cold-start fuel cell system at sub-zero temperatures | Emerging Cross-Sectional Technologies | 1 | Active |
| US7250230B2 | Water filter for an electrochemical fuel cell system | Emerging Cross-Sectional Technologies | 1 | Expired |
| US7214437B2 | Method for electrically starting up a fuel cell | Emerging Cross-Sectional Technologies | 0 | Expired |
| US7160523B2 | Device for producing hydrogen-containing gas for a fuel cell system | Emerging Cross-Sectional Technologies | 0 | Expired |
| US7022148B2 | Apparatus and method for supplying fuel to a gas-generating system | Emerging Cross-Sectional Technologies | 0 | Expired |
| US7005114B2 | Gas generation system for a reformer and method for providing a gas flow to a reformer | Emerging Cross-Sectional Technologies | 0 | Expired |
| US7341610B2 | Fuel cell system having two reformation reactors and method for operating same | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.