**US patents**

# US patents

## About this network

This is the citation network of patents registered with the United States Patent and Trademark Office. Each node is a patent, and a directed edge represents a patent and an edge represents a citation. The network contain loops, i.e., self-citations.

## Network info

Code | PC |

Category | ⬤ Citation |

Data source | http://www.nber.org/patents/ |

Vertex type | Patent |

Edge type | Citation |

Format | Directed |

Edge weights | Unweighted |

Metadata | Acyclic |

Size | 3,774,768 vertices (patents) |

Volume | 16,518,947 edges (citations) |

Average degree (overall) | 8.7523 edges / vertex |

Fill | 1.1593 × 10^{–6} edges / vertex^{2} |

Maximum degree | 793 edges |

Reciprocity | 0% |

Size of LCC | 3,764,117 vertices |

Size of LSCC | 1 vertex (network is acyclic) |

Wedge count | 335,781,273 |

Claw count | 6,803,403,509 |

Triangle count | 7,515,023 |

Square count | 341,906,226 |

4-tour count | 4,111,412,794 |

Power law exponent (estimated) with d_{min} | 4.0010 (d_{min} = 47) |

Gini coefficient | 51.6% |

Relative edge distribution entropy | 96.9% |

Assortativity | 0.16768 |

Clustering coefficient | 6.71% |

Diameter | 26 edges |

90-percentile effective diameter | 9.48 edges |

Mean shortest path length | 8.24 edges |

Spectral norm | 113.04 |

## Downloads

TSV file: | patentcite.tar.bz2 (80.26 MiB) |