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Hart Douglas E patents

Hart Douglas E is listed as an inventor on 20 patents in our database. Major assignees and classification codes are summarized below.

Inventor statistics
MetricValue
InventorHart Douglas E
Total patents20
First publicationJan 14, 2016
Latest publicationJan 7, 2025

Notable patents

Publications ranked by popularity score, then publication date.

Recent patents

Latest publications not already listed above.

Major assignees

Companies most often associated with this inventor's publications.

Top assignees for this inventor
AssigneePatents
Ooma Inc20

Top CPC classifications

Most common classification codes across this inventor's patents.

Top CPC codes for this inventor
CPCPatents
G08B21/04618
G08B21/0438
G08B25/0168
G08B25/0018
G08B21/188