Assignee
BROWN DONAVAN HOLLAND
US·4 granted patents·2 citations·filing 2019–2021
Technology mixE21B4
Top patents by PatentIndex Score
4 records- 0174US10907444B1Choke system for a downhole valveBROWN DONAVAN HOLLAND·Filed 2019·Granted Feb 2, 2021·2 cites·12 claims
- 0252US11098558B2Injection valve arrangement with switched bypass and methodBROWN DONAVAN HOLLAND·Filed 2019·Granted Aug 24, 2021·0 cites·15 claims
- 0348US11566516B2Indexing valve system for a resource exploration and recovery systemBROWN DONAVAN HOLLAND·Filed 2020·Granted Jan 31, 2023·0 cites·17 claims
- 0440US11549333B2Indexing tool system for a resource exploration and recovery systemBROWN DONAVAN HOLLAND·Filed 2021·Granted Jan 10, 2023·0 cites·20 claims
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