Matrix defining the KEV Format to represent a patent

dc:title KEV Metadata Format: patent
dc:creator NISO Committee AX, OpenURL Standard Committee
dc:description This Matrix represents a patent document as a string of ampersand-delimited Key/Encoded Value pairs
dc:identifier info:ofi/fmt:kev:mtx:patent
dcterms:created "2004-01-01"

A representation of a Key/Encoded-Value pair is generated by concatenating the contents of the first four columns of a row that begins with an ampersand in the Matrix below. The ordering of KEV pairs is not important. Rows which have '#' in the first column are comments and should not be included in the representation.

The following data types are provided for the values of the Keys, which must be URL-encoded:

<data> Character string
<id> Character string for an Identifier (Z39.88-2004, Part 1, Section 7)
<fmt-id> Character string for a Format Identifier (Z39.88-2004, Part 1, Sections 12 and 13)
<m-key> Character string for a Metadata Key (Z39.88-2004, Part 2, Section 7.1)
<url> Character string for a URL
<date> Character string representing a date to the complete date level of the W3CDTF profile of ISO 8601, of the form: [ YYYY-MM-DD | YYYY-MM | YYYY ]
<time> Character string representing a date and time to the seconds level of the W3CDTF profile of ISO 8601, of the form: [ YYYY-MM-DDThh:mm:ssTZD | YYYY-MM-DD ]

Abbreviations in column headings:

The Matrix

Delim Key Equals Value Min Max Description
& inventor = <data> 0 * Inventor's full name e.g. "Smith, John J."
& invlast = <data> 0 1 Family name of the first inventor listed on the patent, e.g. "Smith".
& invfirst = <data> 0 1 First or given name or names of the first inventor listed on the patent, e.g. "John J."
& title = <data> 0 1 Patent title, e.g. "Multi-purpose, species discriminating bird feeder".
& co = <data> 0 1 Full name of the country of publication, e.g. "Canada"
& cc = <data> 0 1 County of publication code, in ISO 2-character format, e.g. "JP".
& kind = <data> 0 1 The patent kind code indicates the stage of the patent. Kind codes are meaningful within a country code, ie.e. "AU A1".
& applcc = <data> 0 1 Application country code; the country in which the patent application was made (mainly used for patents pending).
& applnumber = <data> 0 1 Application number assigned to the patent, e.g. "2000028896".
& number = <data> 0 1 Patent number.This number is usually combined with the country code for retrieval.
& date = <date> 0 1 Date patent was issued.
& applyear = <date> 0 1 Year the application was made.
& appldate = <date> 0 1 Date of the patent application.
& assignee = <data> 0 1 Patent assignee, e.g. "IBM", "Microsoft Corporation".
& pubdate = <date> 0 1 Publication date of the patent.
& prioritydate = <date> 0 1 Priority application date

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