Individual holder
CHANG WILLIAM I
US·3 granted patents·13 citations·filing 2005–2011
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0174US8645345B2Search engine and method with improved relevancy, scope, and timelinessCHANG WILLIAM I·Filed 2011·Granted Feb 4, 2014·3 cites·19 claims
- 0274US8606860B2System and method for providing filtering email messagesCHANG WILLIAM I·Filed 2005·Granted Dec 10, 2013·10 cites·17 claims
- 0349US8886621B2Search engine and method with improved relevancy, scope, and timelinessCHANG WILLIAM I·Filed 2011·Granted Nov 11, 2014·0 cites·26 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →