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richardedwardh…
Last seen: 09/25/2018 - 10:54
Joined: 08/08/2018 - 11:12
meaning of category field in table cpc_current

I downloaded the file  cpc_current from the bulk data area.   There is a field in that file called "category", which takes on two values: "inventional" and "additional".   What is the meaning of these two values?

Tue, 08/21/2018 - 14:33
PVTeam
Role: moderator
Last seen: 11/29/2024 - 15:02
Joined: 10/17/2017 - 10:47
RE: MISSING CATEGORY FIELD IN TABLE CPC_CURRENT

Hello,

The category column in cpc_current provides information about the specific cpc code reference in a patent. Additional means that the cpc code is an additional or supplemental reference to information not directly related to the invention, and inventional means that the cpc code references information directly related to the invention.

For example, you can use the following query to view the cpc codes used in patent 9488852:

SELECT * FROM cpc_current WHERE patent_id = '9488852' ORDER BY sequence;

You will see that sequence 0-7 are inventional and sequence 8 is additional.

Thanks,

PVTeam