A set of 9071 patent documents from the open access Lens patent database containing the word drone or drones in the full text of documents published between 1948 and the 31st of December 2017 and reduced from 16,419 publications to one record per family. The records can be accessed online at the public collection https://www.lens.org/lens/collection/45155.
data("lens_drones")
A data frame with 9071 observations of 24 variables:
number
The record number (row no), a character vector
jurisdiction
The two letter country or instrument code where a document was published, a character vector
kind
The kind code describing the publication level of a document, a character vector
publication_number
The publication number including forward /, a character vector
lens_id
The internal Lens database identifier, a character vector
publication_date
a character vector
publication_year
a character vector
application_number
a character vector
application_date
a character vector
priority_numbers
Patent priority numbers in long format with dates, a character vector
title
The patent document title, a character vector
applicants
patent applicants concatenated with ";;", a character vector
inventors
The original inventor name, concatenated with ";;", a character vector
url
url link to the record, a character vector
type
A Patent Application, Granted Patent or other type, a character vector
full_text
Indicates whether the full text is available at the Lens, a character vector
cited_count
Number of later patent filings citing the document, a character vector
simple family size
Assumed to be the DOCDB family based on shared priority, a character vector
extented_family_size
Assumed to be the extended INPADOC family but not documented by the Lens, a character vector
sequence_count
A count of DNA or amino acid sequences, a character vector
cpc_classification
The Cooperative Patent Classification Codes, a character vector
ipcr_classifications
International Patent Classification - IPC - codes, a character vector
npl_citation_ids
Non patent literature citation identifiers, a character vector
Field names in this dataset have been simplified from their original long form to make them easier to work with in R. Lens Patent data fields are concatenated with a double semicolon and require tidying for accurate counts. Applicant and inventor names have not been cleaned.