Inventor
CHAMBERLAIN CHARLES R
US13 patents
⚠️ This page may combine multiple inventors who share the name “CHAMBERLAIN CHARLES R”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
US POSTAL SERVICE
6 patentsUS7991652B2Aug 2, 2011
System and method for tracking a product
US POSTAL SERVICE38 citations91
US7797543B1Sep 14, 2010
Systems and methods for authenticating an electronic message
US POSTAL SERVICE35 citations91
US7266696B2Sep 4, 2007
Electronic postmarking without directly utilizing an electronic postmark server
US POSTAL SERVICE13 citations82
US7121455B2Oct 17, 2006
Systems and methods for electronic postmarking including ancillary data
US POSTAL SERVICE12 citations82
US7779481B2Aug 17, 2010
Systems and methods for electronic postmarking of data including location data
US POSTAL SERVICE4 citations61
US7451915B2Nov 18, 2008
Systems and methods for electronic postmarking including ancillary data background
US POSTAL SERVICE0 citations51