
Anna Chen Deng
Examiner (ID: 586, Phone: (571)272-5989 , Office: P/2191 )
| Most Active Art Unit | 2191 |
| Art Unit(s) | 2191, 2192 |
| Total Applications | 960 |
| Issued Applications | 851 |
| Pending Applications | 17 |
| Abandoned Applications | 94 |
Applications
| Application number | Title of the application | Filing Date | Status |
|---|---|---|---|
Array
(
[id] => 20227569
[patent_doc_number] => 12416213
[patent_country] => US
[patent_kind] => B2
[patent_issue_date] => 2025-09-16
[patent_title] => Pressure release system for well intervention
[patent_app_type] => utility
[patent_app_number] => 18/347941
[patent_app_country] => US
[patent_app_date] => 2023-07-06
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Array
(
[id] => 19731475
[patent_doc_number] => 12209466
[patent_country] => US
[patent_kind] => B2
[patent_issue_date] => 2025-01-28
[patent_title] => Biased lug cartridge, wear bushing with biased lug cartridge, and system and method using the same
[patent_app_type] => utility
[patent_app_number] => 18/341904
[patent_app_country] => US
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Array
(
[id] => 20427084
[patent_doc_number] => 20250389172
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[patent_kind] => A1
[patent_issue_date] => 2025-12-25
[patent_title] => SYSTEMS AND METHODS FOR SUBSEA FLUID HANDLING
[patent_app_type] => utility
[patent_app_number] => 18/879372
[patent_app_country] => US
[patent_app_date] => 2023-06-23
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Array
(
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[patent_kind] => A1
[patent_issue_date] => 2025-11-27
[patent_title] => IMPROVING FATIGUE RESISTANCE OF STEEL CATENARY RISERS
[patent_app_type] => utility
[patent_app_number] => 18/876121
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[patent_app_date] => 2023-06-21
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Array
(
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[patent_doc_number] => 20250334015
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[patent_issue_date] => 2025-10-30
[patent_title] => Subsea Christmas Tree Comprising a Control and Battery Module and Related Method
[patent_app_type] => utility
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Array
(
[id] => 20129649
[patent_doc_number] => 12371953
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[patent_issue_date] => 2025-07-29
[patent_title] => Automatic small repair operation system for oil field
[patent_app_type] => utility
[patent_app_number] => 18/331907
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Array
(
[id] => 20364650
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[patent_issue_date] => 2025-11-20
[patent_title] => GUIDE ROD
[patent_app_type] => utility
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[rel_patent_id] =>[rel_patent_doc_number] =>) 18/874965 | GUIDE ROD | May 31, 2023 | Pending |
Array
(
[id] => 18818138
[patent_doc_number] => 20230392478
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2023-12-07
[patent_title] => Partitioning High Pressure Pumps At A Well Site
[patent_app_type] => utility
[patent_app_number] => 18/327600
[patent_app_country] => US
[patent_app_date] => 2023-06-01
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[rel_patent_id] =>[rel_patent_doc_number] =>) 18/327600 | Partitioning High Pressure Pumps At A Well Site | May 31, 2023 | Abandoned |
Array
(
[id] => 19312070
[patent_doc_number] => 12037874
[patent_country] => US
[patent_kind] => B1
[patent_issue_date] => 2024-07-16
[patent_title] => Sleeve for multi-stage wellbore stimulation
[patent_app_type] => utility
[patent_app_number] => 18/323609
[patent_app_country] => US
[patent_app_date] => 2023-05-25
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[rel_patent_id] =>[rel_patent_doc_number] =>) 18/323609 | Sleeve for multi-stage wellbore stimulation | May 24, 2023 | Issued |
Array
(
[id] => 20387027
[patent_doc_number] => 12486748
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[patent_kind] => B2
[patent_issue_date] => 2025-12-02
[patent_title] => Hybrid oilfield pumping system
[patent_app_type] => utility
[patent_app_number] => 18/307340
[patent_app_country] => US
[patent_app_date] => 2023-04-26
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[rel_patent_id] =>[rel_patent_doc_number] =>) 18/307340 | Hybrid oilfield pumping system | Apr 25, 2023 | Issued |
Array
(
[id] => 19242395
[patent_doc_number] => 12012818
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[patent_title] => Nested lock screw
[patent_app_type] => utility
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[rel_patent_id] =>[rel_patent_doc_number] =>) 18/302581 | Nested lock screw | Apr 17, 2023 | Issued |
Array
(
[id] => 19374845
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[patent_title] => Rotatable imaging sensor in a wellbore
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[rel_patent_id] =>[rel_patent_doc_number] =>) 18/132455 | Rotatable imaging sensor in a wellbore | Apr 9, 2023 | Issued |
Array
(
[id] => 19480238
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[patent_title] => AUTONOMOUS TUBING CASING ANNULUS RELIEF SYSTEM
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[rel_patent_id] =>[rel_patent_doc_number] =>) 18/192885 | Autonomous tubing casing annulus relief system | Mar 29, 2023 | Issued |
Array
(
[id] => 18676014
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[patent_title] => Adjustable Well Water Flow Valve Device
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[rel_patent_id] =>[rel_patent_doc_number] =>) 18/191279 | Adjustable well water flow valve device | Mar 27, 2023 | Issued |
Array
(
[id] => 18498039
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[patent_title] => RIGLESS METHOD TO PARTIALLY LIFT OR RETRIEVE WELLBORE TUBING STRINGS FROM PLATFORM AND SUBSEA WELLS
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Array
(
[id] => 18597897
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[patent_title] => METHOD FOR DEEP-SEA EXTRACTION OF NATURAL GAS HYDRATES WITH RESERVOIR TOP CONTROL AND SAND PREVENTION
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Array
(
[id] => 19505463
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[patent_title] => Operation of a recirculation circuit for a fluid pump of a hydraulic fracturing system
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Array
(
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Array
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[rel_patent_id] =>[rel_patent_doc_number] =>) 18/104633 | Hands-free gooseneck and hands-free gooseneck flow spool | Jan 31, 2023 | Issued |
Array
(
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[rel_patent_id] =>[rel_patent_doc_number] =>) 18/162216 | ANNULUS ACTIVATED DRAIN VALVE, METHOD AND SYSTEM | Jan 30, 2023 | Abandoned |