Search

Douglas Q. Tran

Examiner (ID: 7418, Phone: (571)272-7442 , Office: P/2672 )

Most Active Art Unit
2672
Art Unit(s)
2724, 2673, 2672, 2624, 2625
Total Applications
1570
Issued Applications
1490
Pending Applications
8
Abandoned Applications
75

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19166368 [patent_doc_number] => 11982263 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-05-14 [patent_title] => Shape metal alloy (SMA) bimorph actuators with reduced wire exit angle [patent_app_type] => utility [patent_app_number] => 18/142471 [patent_app_country] => US [patent_app_date] => 2023-05-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 5268 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 77 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18142471 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/142471
Shape metal alloy (SMA) bimorph actuators with reduced wire exit angle May 1, 2023 Issued
Array ( [id] => 20350429 [patent_doc_number] => 20250347281 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-11-13 [patent_title] => BATTERY OPERATED MOLTEN METAL PUMP [patent_app_type] => utility [patent_app_number] => 18/854144 [patent_app_country] => US [patent_app_date] => 2023-04-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 118 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18854144 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/854144
BATTERY OPERATED MOLTEN METAL PUMP Apr 11, 2023 Pending
Array ( [id] => 20420863 [patent_doc_number] => 20250382948 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-12-18 [patent_title] => POLYMER-BASED TURGOR PRESSURE ACTUATOR, AND DRIVING METHOD AND USE THEREOF [patent_app_type] => utility [patent_app_number] => 18/835958 [patent_app_country] => US [patent_app_date] => 2023-04-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3398 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 76 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18835958 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/835958
POLYMER-BASED TURGOR PRESSURE ACTUATOR, AND DRIVING METHOD AND USE THEREOF Apr 4, 2023 Pending
Array ( [id] => 19211293 [patent_doc_number] => 12000343 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-06-04 [patent_title] => Pressure balancing of rotating control piston of generator transmission [patent_app_type] => utility [patent_app_number] => 18/295587 [patent_app_country] => US [patent_app_date] => 2023-04-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2586 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 149 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18295587 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/295587
Pressure balancing of rotating control piston of generator transmission Apr 3, 2023 Issued
Array ( [id] => 18567772 [patent_doc_number] => 20230258107 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-17 [patent_title] => Energy Conversion System [patent_app_type] => utility [patent_app_number] => 18/295544 [patent_app_country] => US [patent_app_date] => 2023-04-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11023 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 186 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18295544 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/295544
Energy Conversion System Apr 3, 2023 Abandoned
Array ( [id] => 19498182 [patent_doc_number] => 20240337200 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-10 [patent_title] => AIRCRAFT ENGINE FLUID SYSTEM WITH BYPASS VALVE [patent_app_type] => utility [patent_app_number] => 18/130643 [patent_app_country] => US [patent_app_date] => 2023-04-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4963 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18130643 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/130643
Aircraft engine fluid system with bypass valve Apr 3, 2023 Issued
Array ( [id] => 18512062 [patent_doc_number] => 20230228258 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-20 [patent_title] => SYSTEMS AND METHODS FOR GENERATION OF ELECTRICAL POWER IN AN ORGANIC RANKINE CYCLE OPERATION [patent_app_type] => utility [patent_app_number] => 18/125189 [patent_app_country] => US [patent_app_date] => 2023-03-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 19507 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 253 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18125189 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/125189
Systems and methods for generation of electrical power in an organic Rankine cycle operation Mar 22, 2023 Issued
Array ( [id] => 20069294 [patent_doc_number] => 20250207516 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-26 [patent_title] => THERMAL ENERGY CONVERSION METHOD AND SYSTEM [patent_app_type] => utility [patent_app_number] => 18/848124 [patent_app_country] => US [patent_app_date] => 2023-03-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1101 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -24 [patent_words_short_claim] => 142 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18848124 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/848124
THERMAL ENERGY CONVERSION METHOD AND SYSTEM Mar 16, 2023 Pending
Array ( [id] => 18854475 [patent_doc_number] => 11852039 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2023-12-26 [patent_title] => Steam turbine with redundant low pressure section [patent_app_type] => utility [patent_app_number] => 18/184810 [patent_app_country] => US [patent_app_date] => 2023-03-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 4589 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18184810 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/184810
Steam turbine with redundant low pressure section Mar 15, 2023 Issued
Array ( [id] => 19449949 [patent_doc_number] => 20240310079 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-19 [patent_title] => DUAL LOOP HEAT EXCHANGER USING GEOTHERMAL RESOURCE [patent_app_type] => utility [patent_app_number] => 18/182970 [patent_app_country] => US [patent_app_date] => 2023-03-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13023 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 94 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18182970 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/182970
DUAL LOOP HEAT EXCHANGER USING GEOTHERMAL RESOURCE Mar 12, 2023 Abandoned
Array ( [id] => 20025677 [patent_doc_number] => 20250163899 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-05-22 [patent_title] => ENERGY STORAGE DEVICE WITH A VARIABLE VOLUME CHAMBER [patent_app_type] => utility [patent_app_number] => 18/840427 [patent_app_country] => US [patent_app_date] => 2023-03-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -24 [patent_words_short_claim] => 148 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18840427 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/840427
ENERGY STORAGE DEVICE WITH A VARIABLE VOLUME CHAMBER Mar 7, 2023 Pending
Array ( [id] => 18996844 [patent_doc_number] => 11913679 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-02-27 [patent_title] => Geothermal systems and methods with an underground magma chamber [patent_app_type] => utility [patent_app_number] => 18/116693 [patent_app_country] => US [patent_app_date] => 2023-03-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 10 [patent_no_of_words] => 10464 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 139 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18116693 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/116693
Geothermal systems and methods with an underground magma chamber Mar 1, 2023 Issued
Array ( [id] => 20549372 [patent_doc_number] => 12560157 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-02-24 [patent_title] => Sealed compressor [patent_app_type] => utility [patent_app_number] => 18/844709 [patent_app_country] => US [patent_app_date] => 2023-02-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 12 [patent_no_of_words] => 4901 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 255 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18844709 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/844709
Sealed compressor Feb 23, 2023 Issued
Array ( [id] => 19326464 [patent_doc_number] => 12044134 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-07-23 [patent_title] => Adjustment ring for a variable turbine geometry [patent_app_type] => utility [patent_app_number] => 18/112900 [patent_app_country] => US [patent_app_date] => 2023-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 11 [patent_no_of_words] => 14546 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 128 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18112900 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/112900
Adjustment ring for a variable turbine geometry Feb 21, 2023 Issued
Array ( [id] => 18469724 [patent_doc_number] => 20230204008 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-29 [patent_title] => DISPLACEMENT DEVICE INCLUDING FORCE DISPLACEMENT MECHANISM WITH CONSTANT VOLUME BOOT [patent_app_type] => utility [patent_app_number] => 18/170940 [patent_app_country] => US [patent_app_date] => 2023-02-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 16872 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -22 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18170940 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/170940
Displacement device including force displacement mechanism with constant volume boot Feb 16, 2023 Issued
Array ( [id] => 19121627 [patent_doc_number] => 11965599 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-04-23 [patent_title] => Brush seal [patent_app_type] => utility [patent_app_number] => 18/165642 [patent_app_country] => US [patent_app_date] => 2023-02-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 18 [patent_no_of_words] => 13359 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 170 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18165642 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/165642
Brush seal Feb 6, 2023 Issued
Array ( [id] => 19433376 [patent_doc_number] => 20240301874 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-12 [patent_title] => BALANCED GEOTHERMAL ENERGY TRANSFER LOOP [patent_app_type] => utility [patent_app_number] => 18/245812 [patent_app_country] => US [patent_app_date] => 2023-02-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10838 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 103 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18245812 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/245812
Balanced geothermal energy transfer loop Feb 5, 2023 Issued
Array ( [id] => 20025610 [patent_doc_number] => 20250163832 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-05-22 [patent_title] => METHOD AND IMPROVED DEVICE FOR CONVERTING THERMAL ENERGY INTO KINETIC ENERGY [patent_app_type] => utility [patent_app_number] => 18/837179 [patent_app_country] => US [patent_app_date] => 2023-02-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 207 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18837179 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/837179
Method and improved device for converting thermal energy into kinetic energy Feb 2, 2023 Issued
Array ( [id] => 19746475 [patent_doc_number] => 20250035040 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-01-30 [patent_title] => HEAT EXCHANGER PROVIDED WITH AN AIR DIFFUSION SYSTEM AND CORRESPONDING TURBOMACHINE [patent_app_type] => utility [patent_app_number] => 18/834706 [patent_app_country] => US [patent_app_date] => 2023-01-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7138 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 188 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18834706 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/834706
Heat exchanger provided with an air diffusion system and corresponding turbomachine Jan 26, 2023 Issued
Array ( [id] => 19910758 [patent_doc_number] => 12286962 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-04-29 [patent_title] => Binary power generation system utilizing renewable energy such as geothermal heat [patent_app_type] => utility [patent_app_number] => 18/039327 [patent_app_country] => US [patent_app_date] => 2023-01-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 0 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 246 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18039327 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/039327
Binary power generation system utilizing renewable energy such as geothermal heat Jan 25, 2023 Issued
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