Google BigQuery patents-public-data.patents.publications table has a column named "application_kind". This is different than the kind_code column which is different codes for each country's patent office. The description simply as below:

High-level kind of the application: A=patent; U=utility; P=provision; W= PCT; F=design; T=translation.

However, when I request the following query:

application_kind, count(*)
FROM `patents-public-data.patents.publications`
GROUP BY application_kind
ORDER BY count(*) DESC

I get a result that includes many more codes as the sample below:

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Is there a source to find out the other types of application kinds?

  • This is an odd categorization scheme if everything belonged to only one group. In the U.S. a U would also be an A and "provision" is not a kind of an application - it is "provisional" , and T's are presumably a translation of one of the other categories. Give that I would not expect much logic from whatever an a,X, S, Q, etc. mean.
    – George White
    Dec 4 '20 at 20:26

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