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Patent Format (KEV)
The KEV format for patents and patent applications: patent number, country, kind code, inventors, assignee and the relevant dates.
The Patent KEV format describes a patent document. Its identifier is info:ofi/fmt:kev:mtx:patent. Note that the patent number key is simply number.
Format identifier
rft_val_fmt=info:ofi/fmt:kev:mtx:patentKeys
| Key | Meaning (from the Registry matrix) | Repeatable | Example |
|---|---|---|---|
rft.number | Patent number, usually combined with the country code for retrieval | no | 6285999 |
rft.cc | Country of publication, ISO two-letter code | no | US |
rft.co | Country of publication, full name | no | United States |
rft.kind | Kind code, meaningful within a country code | no | B1 |
rft.title | Patent title | no | Method for node ranking in a linked database |
rft.inventor | An inventor's full name | yes | Page, Lawrence |
rft.invlast | Family name of the first inventor | no | Page |
rft.invfirst | Given name(s) of the first inventor | no | Lawrence |
rft.assignee | Patent assignee | no | Leland Stanford Junior University |
rft.applcc | Country in which the application was made | no | US |
rft.applnumber | Application number | no | 09/004,827 |
rft.appldate | Date of the application | no | 1998-01-09 |
rft.applyear | Year the application was made | no | 1998 |
rft.prioritydate | Priority application date | no | 1997-01-10 |
rft.pubdate | Publication date | no | — |
rft.date | Date the patent was issued | no | 2001-09-04 |
Worked example
url_ver=Z39.88-2004
&ctx_ver=Z39.88-2004
&rft_val_fmt=info:ofi/fmt:kev:mtx:patent
&rft.cc=US
&rft.number=6285999
&rft.kind=B1
&rft.title=Method+for+node+ranking+in+a+linked+database
&rft.inventor=Page%2C+Lawrence
&rft.assignee=Leland+Stanford+Junior+University
&rft.applcc=US
&rft.applnumber=09%2F004%2C827
&rft.appldate=1998-01-09
&rft.prioritydate=1997-01-10
&rft.date=2001-09-04
&rfr_id=info:sid/example.com:patentdbThis is US 6,285,999 B1, the PageRank patent. See the worked example for a field-by-field explanation.
Notes
- The key is
rft.number. A key calledpatent_numberdoes not exist in the registered format. - The format has no applicant key and no genre key. Only
inventorrepeats;assigneeappears at most once. - Kind codes follow the issuing office's practice (WIPO Standard ST.16 describes them). In the US, A1 is a pre-grant publication, B1 a patent granted with no previous published application, and B2 a patent granted after a published application.