us_patents — U.S. patent citation network (1975-1999)

Description

Network of citations among utility patents granted in the United States, from the NBER U.S. Patent Citations Data File compiled by B. H. Hall, A. B. Jaffe and M. Trajtenberg from the records of the U.S. Patent and Trademark Office. The network contains all citations made by patents granted between 1975 and 1999 (16,522,438 citations), and includes the citing patents as well as the patents they cite (3,774,768 nodes). Nodes are patents and a directed edge points from a citing patent to a cited patent.

The patents granted between 1963 and 1999 are annotated with the variables of the NBER patent data file; for the other nodes these properties take the value $-1$ (or are empty). The network has the following properties:

(Node) patent_id: the patent number.
(Node) GYEAR, GDATE: the grant year, and the grant date (in days since 1 January 1960).
(Node) APPYEAR: the application year.
(Node) COUNTRY, POSTATE: the country of the first inventor, and the state if the country is the U.S.
(Node) ASSIGNEE: the identifier of the assignee (see the graph property aconame); ASSCODE: the type of assignee (1: unassigned, 2: U.S. non-government organization, 3: non-U.S. non-government organization, 4: U.S. individual, 5: non-U.S. individual, 6: U.S. government, 7: non-U.S. government).
(Node) CLAIMS: the number of claims.
(Node) NCLASS: the main U.S. patent class; CAT and SUBCAT: the technological category and sub-category of Hall, Jaffe and Trajtenberg.
(Node) CMADE, CRECEIVE: the number of citations made and received (up to 1999).
(Node) RATIOCIT: the fraction of the citations made that refer to patents granted since 1963.
(Node) GENERAL, ORIGINAL: the generality and originality indices, measuring the dispersion of the citations received and made over technology classes.
(Node) FWDAPLAG, BCKGTLAG: the mean forward citation lag and the mean backward citation lag, in years.
(Node) SELFCTUB, SELFCTLB: upper and lower bounds of the share of self-citations made (citations to patents of the same assignee); SECDUPBD, SECDLWBD: upper and lower bounds of the share of self-citations received.
(Node) inventor: the inventors of the patent, as a list with one dictionary per inventor holding the name and address of the inventor (LASTNAM, FIRSTNAM, MIDNAM, MODIFNAM, STREET, CITY, POSTATE, COUNTRY, ZIP) and its position in the list of inventors (INVSEQ).

Graph properties hold the auxiliary tables of the data file: aconame (the names of the assignees), amatch (the match of assignees to Compustat companies), classes (the names of the patent classes), states and countries (codes of states and countries), class_cat (the category and sub-category of each patent class), and cat_names (the names of the categories and sub-categories).

Tags

Informational Citation Unweighted Temporal Metadata

Added

2020-08-11

Citation

B. H. Hall, A. B. Jaffe, & M. Trajtenberg, "The NBER patent citations data file: Lessons, insights and methodological tools." National Bureau of Economic Research, NBER Working Paper No. 8498 (2001) 10.3386/w8498 Sci-Hub

Upstream URL OK

https://data.nber.org/patents/

Networks

Tip: hover over a column header for a description.

Column legend

$\left<k\right>$: Mean degree
$\sigma_k$: Standard deviation of the degrees
$\lambda_h$: Largest eigenvalue of the Hashimoto (non-backtracking) matrix
$\tau$: Random walk mixing time
$r$: Degree assortativity
$c$: Global clustering coefficient
$\oslash$: (Pseudo-) diameter
$S$: Relative size of the largest component
NPs: Node properties
EPs: Edge properties

Name	Nodes	Edges	$\left<k\right>$	$\sigma_k$	$\lambda_h$	$\tau$	$r$	$c$	$\oslash$	$S$	Kind	Mode	NPs	EPs	gt	GraphML	GML	csv
us_patents	3,774,768	16,522,438	8.75	10.49	110.45	322.88	0.17	0.07	26	1.00	Undirected	Unipartite	patent_id GYEAR GDATE APPYEAR COUNTRY POSTATE ASSIGNEE ASSCODE CLAIMS NCLASS CAT SUBCAT CMADE CRECEIVE RATIOCIT GENERAL ORIGINAL FWDAPLAG BCKGTLAG SELFCTUB SELFCTLB SECDUPBD SECDLWBD inventor		128.4 MiB	221.2 MiB	201.1 MiB	219.3 MiB