In the Google patent “Providing Knowledge Panels With Search Results” is a reference to an earlier Google patent filing describing Knowledge Cards in depth. The patent provision is titled, “Apparatus and Method for Supplying Search Results with a knowledge Card”, and it is identified as being Patent Application No. 61/515,305, filed on Aug. 4, 2011.
This provisional patent is not linkable from the Web, otherwise, I would provide a link to it.
It is supposedly “incorporated fully” into that later patent filing, but a lot of details about what a knowledge card is have been left out of the later patent filing. I wrote about that later patent in a post titled, How Google Decides What to Know in Knowledge Graph Results, but the patent specifically about knowledge cards contains information not in the later patent.
Knowledge Panel results are part of Google’s Semantic Web search results which include a mix of result types such as Direct Answers, Structured Snippets, Rich Snippets and are part of an evolution of search results happening at Google and Bing and Microsoft that go much beyond yesterday’s 10-Blue links. I’ll be following this post with one about the rich search results that show up in response to queries at Bing.