PP

Peter L. T. Pirolli

CH Contentguard Holdings: 47 patents #3 of 45Top 7%
Xerox: 28 patents #468 of 8,622Top 6%
PI Palo Alto Research Center Incorporated: 4 patents #277 of 776Top 40%
📍 San Francisco, CA: #205 of 26,999 inventorsTop 1%
🗺 California: #3,555 of 386,348 inventorsTop 1%
Overall (All Time): #23,901 of 4,157,543Top 1%
78
Patents All Time

Issued Patents All Time

Showing 26–50 of 78 patents

Patent #TitleCo-InventorsDate
7225160 Digital works having usage rights and method for creating the same Mark J. Stefik, Ralph C. Merkle 2007-05-29
7209902 Repository with security class and method for use thereof Mark J. Stefik 2007-04-24
7203899 Systems and methods for assessing user success rates of accessing information in a collection of contents Ed H. Chi 2007-04-10
7200574 System for controlling the distribution and use digital works using digital tickets Mark J. Stefik 2007-04-03
7139736 Content rendering repository Mark J. Stefik 2006-11-21
7117180 System for controlling the use of digital works using removable content repositories Mark J. Stefik 2006-10-03
7113912 Composite digital works having usage rights and method for creating the same Mark J. Stefik 2006-09-26
7096202 Consumer distribution license system and method Mark J. Stefik 2006-08-22
7065505 Method for metering and pricing of digital works Mark J. Stefik 2006-06-20
7058606 Method for loaning digital works Mark J. Stefik 2006-06-06
7043702 Method for visualizing user path through a web site and a path's associated information scent Ed H. Chi, James E. Pitkow 2006-05-09
7043453 Method and system for conducting transactions between repositories using a repository transaction protocol Mark J. Stefik 2006-05-09
7039613 System and method for controlling distribution and use of digital works using price specifications Mark J. Stefik 2006-05-02
7028053 Apparatus and methods for accessing a collection of content portions Ed H. Chi 2006-04-11
7024392 Method for controlling use of database content Mark J. Stefik 2006-04-04
7017110 System and method for inferring user information need in hypermedia linked document collection Ed H. Chi, James E. Pitkow 2006-03-21
6963859 Content rendering repository Mark J. Stefik 2005-11-08
6959290 Method and apparatus for tracking states of digital works Mark J. Stefik 2005-10-25
6957194 Method for printing digital works Mark J. Stefik 2005-10-18
6957193 Repository with security class and method for use thereof Mark J. Stefik 2005-10-18
6944600 System for controlling the distribution and use of digital works using digital tickets Mark J. Stefik 2005-09-13
6941321 System and method for identifying similarities among objects in a collection Hinrich Schuetze, Francine Chen, James E. Pitkow, Ed H. Chi, Jun Li 2005-09-06
6934693 System for controlling the distribution and use of digital works Mark J. Stefik 2005-08-23
6928419 Method and apparatus for repackaging portions of digital works as new digital works Mark J. Stefik 2005-08-09
6925448 Usage rights grammar and digital works having usage rights created with the grammar Mark J. Stefik 2005-08-02