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For the Inventor, By the Inventor

Sammamish, WA, United States of America

Duane Campbell

This inventor holds 4 USPTO granted patents and 2 EPO patents. Top assignee: Microsoft Technology Licensing, LLC. Active years: 2009-2021.

USPTO Granted Patents = 4

% Patents Active = 75.0


Average Co-Inventor Count = 6.5

ph-index = 3

Forward Citations = 16(Granted Patents)


Company Filing History:

goldMedal4 out of 56,141 
 
Microsoft Technology Licensing, LLC
 patents

Years Active: 2009-2021

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4 patents (USPTO):Explore Patents
1. 10936797 - Collaborative document editing using state-based revision (2021-03-02),
2. 10331775 - Collaborative document editing using state-based revision (2019-06-25),
3. 8032821 - Multi-thread spreadsheet processing with dependency levels (2011-10-04),
4. 7533139 - Method and system for multithread processing of spreadsheet chain calculations (2009-05-12),
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