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The SDB USPTO data is current through Jun 2010.

Notes

Duplicate titles and even abstracts are common in the data, as companies may use a template for related patent submissions.

Acknowledgments

We thank Steven A.Morris (formerly with , Electrical and Computer Engineering, Oklahoma State University) for making patent data prior to 1996 available to us and for his guidance in parsing and analyzing the data. This data set description was compiled by Nianli Ma and Katy Börner.

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