Raleigh, NC, United States of America

Richard James Spangler

This inventor holds 4 USPTO granted patents and 3 EPO patents. Top assignee: Tekelec. Active years: 2001-2010.


% Patents Active = 100.0


Average Co-Inventor Count = 3.5

ph-index = 4

Forward Citations = 227(Granted Patents)


Company Filing History:


Years Active: 2001-2010

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4 patents (USPTO):Explore Patents
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