\r\n Energy patents can be classified as fossil fuel patents or clean energy\r\n patents \r\n The European Patent Office (EPO)'s classification scheme for climate\r\n mitigation technologies were used to classify the patents as clean\r\n energy patents. A collaboration with EPO to perform text searches on\r\n abstracts was done to classify patents within different fossil fuel\r\n categories.\r\n \r\n Note that each patent can belong to more than two technology\r\n categories. For example, some patents related to electric vehicles\r\n belong to both storage and e-mobility. Therefore, the sum of patents\r\n from sub-categories does not equal the sum of patents from the\r\n corresponding parent category.\r\n
\r\n The treemap gives a broad overview how patents are distributed among\r\n different energy technologies.\r\n
\r\n\r\n The graph shows how patents are distributed among clean energy\r\n technologies, broken down into 13 categories.\r\n
\r\n\r\n The graph shows the distribution of patents among 26 fossil fuel\r\n technologies, which are broken down by sector (upstream, processing and\r\n downstream, transmission and distribution). Note that unlike the clean\r\n energy transition patents, patented inventions related to fossil fuel\r\n demand (e.g. engines) are not included in the counts.\r\n
\r\n\r\n The graph below shows number of fossil fuel patents and clean energy\r\n patents for each country. The colour of the line represents the colour\r\n of the largest category.\r\n
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