Added useful variables to store existence of certain patent fields used for parsing
Added useful variables to store existence of certain patent fields used for parsing

funginstitute/patentprocessor,nikken1/patentprocessor,funginstitute/patentprocessor,yngcan/patentprocessor,yngcan/patentprocessor,yngcan/patentprocessor,nikken1/patentprocessor,funginstitute/patentprocessor,nikken1/patentprocessor