A search engine system displays the results of a multiple-category search according to levels of relevance of the categories to a user's search query. A query server receives a search query from a user and identifies, within each of multiple item categories, a set of items that satisfy the query. The...http://www.google.com.au/patents/US6963867?utm_source=gb-gplus-sharePatent US6963867 - Search query processing to provide category-ranked presentation of search results
