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] => 20542848 [patent_doc_number] => 20260049738 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-02-19 [patent_title] => PUMP FOR A ZONED HEATING OR COOLING SYSTEM AND METHOD FOR CONTROLLING A PUMP [patent_app_type] => utility [patent_app_number] => 19/102063 [patent_app_country] => US [patent_app_date] => 2023-08-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3537 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -21 [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] => 19102063 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/102063
PUMP FOR A ZONED HEATING OR COOLING SYSTEM AND METHOD FOR CONTROLLING A PUMP Aug 9, 2023 Pending
Array ( [id] => 18972683 [patent_doc_number] => 20240052775 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-15 [patent_title] => ROTARY PISTON ENGINE [patent_app_type] => utility [patent_app_number] => 18/448131 [patent_app_country] => US [patent_app_date] => 2023-08-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1748 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 85 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18448131 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/448131
ROTARY PISTON ENGINE Aug 9, 2023 Abandoned
Array ( [id] => 20555943 [patent_doc_number] => 20260055723 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-02-26 [patent_title] => TANGENTIAL INTERNAL COMBUSTION ENGINE [patent_app_type] => utility [patent_app_number] => 19/102299 [patent_app_country] => US [patent_app_date] => 2023-08-03 [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] => -15 [patent_words_short_claim] => 311 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19102299 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/102299
TANGENTIAL INTERNAL COMBUSTION ENGINE Aug 2, 2023 Pending
Array ( [id] => 19565352 [patent_doc_number] => 12140116 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-11-12 [patent_title] => Displacement device including force displacement mechanism with constant volume boot [patent_app_type] => utility [patent_app_number] => 18/230097 [patent_app_country] => US [patent_app_date] => 2023-08-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 18 [patent_no_of_words] => 16874 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 81 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18230097 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/230097
Displacement device including force displacement mechanism with constant volume boot Aug 2, 2023 Issued
Array ( [id] => 19594680 [patent_doc_number] => 12152510 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-11-26 [patent_title] => Thermal energy storage power plant [patent_app_type] => utility [patent_app_number] => 18/274413 [patent_app_country] => US [patent_app_date] => 2023-07-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 8101 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 222 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18274413 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/274413
Thermal energy storage power plant Jul 25, 2023 Issued
Array ( [id] => 19779027 [patent_doc_number] => 12228051 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-02-18 [patent_title] => Components having coating systems comprising mud cracks and methods for forming the coating systems [patent_app_type] => utility [patent_app_number] => 18/359480 [patent_app_country] => US [patent_app_date] => 2023-07-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 5659 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 132 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18359480 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/359480
Components having coating systems comprising mud cracks and methods for forming the coating systems Jul 25, 2023 Issued
Array ( [id] => 18955951 [patent_doc_number] => 20240044278 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-08 [patent_title] => MOTOR UNIT, PARTICULARLY FOR OPERATING MACHINES [patent_app_type] => utility [patent_app_number] => 18/358128 [patent_app_country] => US [patent_app_date] => 2023-07-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2016 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 121 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18358128 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/358128
Motor unit, particularly for operating machines Jul 24, 2023 Issued
Array ( [id] => 18771563 [patent_doc_number] => 20230366384 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-16 [patent_title] => SYSTEMS AND METHODS FOR GENERATION OF ELECTRICAL POWER IN AN ORGANIC RANKINE CYCLE OPERATION [patent_app_type] => utility [patent_app_number] => 18/225013 [patent_app_country] => US [patent_app_date] => 2023-07-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 19584 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 308 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18225013 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/225013
Systems and methods for generation of electrical power in an organic Rankine cycle operation Jul 20, 2023 Issued
Array ( [id] => 19717881 [patent_doc_number] => 12203408 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-01-21 [patent_title] => Arrangement comprising a pin and a crank and turbocharger with such an arrangement [patent_app_type] => utility [patent_app_number] => 18/351678 [patent_app_country] => US [patent_app_date] => 2023-07-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 1417 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 122 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18351678 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/351678
Arrangement comprising a pin and a crank and turbocharger with such an arrangement Jul 12, 2023 Issued
Array ( [id] => 19291260 [patent_doc_number] => 12030605 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-07-09 [patent_title] => Shallow water propellers [patent_app_type] => utility [patent_app_number] => 18/346478 [patent_app_country] => US [patent_app_date] => 2023-07-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 5189 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 189 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18346478 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/346478
Shallow water propellers Jul 2, 2023 Issued
Array ( [id] => 20542675 [patent_doc_number] => 20260049565 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-02-19 [patent_title] => VEHICLE SYSTEM WITH INJECTION HOUSING AND TURBOCHARGER HAVING MOTOR [patent_app_type] => utility [patent_app_number] => 19/101231 [patent_app_country] => US [patent_app_date] => 2023-06-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8036 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 106 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19101231 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/101231
VEHICLE SYSTEM WITH INJECTION HOUSING AND TURBOCHARGER HAVING MOTOR Jun 25, 2023 Pending
Array ( [id] => 19412257 [patent_doc_number] => 12078066 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-09-03 [patent_title] => Pressure control system for a closed-cycle engine [patent_app_type] => utility [patent_app_number] => 18/341149 [patent_app_country] => US [patent_app_date] => 2023-06-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 14 [patent_no_of_words] => 5583 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [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] => 18341149 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/341149
Pressure control system for a closed-cycle engine Jun 25, 2023 Issued
Array ( [id] => 18709960 [patent_doc_number] => 20230332582 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-19 [patent_title] => SYSTEMS FOR GENERATING GEOTHERMAL POWER IN AN ORGANIC RANKINE CYCLE OPERATION DURING HYDROCARBON PRODUCTION BASED ON WELLHEAD FLUID TEMPERATURE [patent_app_type] => utility [patent_app_number] => 18/212269 [patent_app_country] => US [patent_app_date] => 2023-06-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 18198 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -22 [patent_words_short_claim] => 172 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18212269 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/212269
Systems for generating geothermal power in an organic Rankine cycle operation during hydrocarbon production based on wellhead fluid temperature Jun 20, 2023 Issued
Array ( [id] => 18831478 [patent_doc_number] => 20230400005 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-14 [patent_title] => PRESSURE-REGULATING HYDRODYNAMIC PUMP AND WAVE ENGINE [patent_app_type] => utility [patent_app_number] => 18/208875 [patent_app_country] => US [patent_app_date] => 2023-06-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 23566 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18208875 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/208875
Pressure-regulating hydrodynamic pump and wave engine Jun 11, 2023 Issued
Array ( [id] => 19390219 [patent_doc_number] => 20240280089 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-22 [patent_title] => SHAPE MEMORY MATERIAL MEMBER-BASED ACTUATOR [patent_app_type] => utility [patent_app_number] => 18/329217 [patent_app_country] => US [patent_app_date] => 2023-06-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13727 [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] => 18329217 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/329217
Shape memory material member-based actuator Jun 4, 2023 Issued
Array ( [id] => 19717929 [patent_doc_number] => 12203456 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-01-21 [patent_title] => Geothermal heat harvesters [patent_app_type] => utility [patent_app_number] => 18/327223 [patent_app_country] => US [patent_app_date] => 2023-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 12621 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 2 [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] => 18327223 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/327223
Geothermal heat harvesters May 31, 2023 Issued
Array ( [id] => 20439230 [patent_doc_number] => 12510060 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-12-30 [patent_title] => Method for storing compressed air energy [patent_app_type] => utility [patent_app_number] => 18/868237 [patent_app_country] => US [patent_app_date] => 2023-05-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3882 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 254 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18868237 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/868237
Method for storing compressed air energy May 22, 2023 Issued
Array ( [id] => 20085925 [patent_doc_number] => 20250215861 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-03 [patent_title] => GEOTHERMAL POWER GENERATION SYSTEMS WITH PRESSURE EXCHANGERS [patent_app_type] => utility [patent_app_number] => 18/867137 [patent_app_country] => US [patent_app_date] => 2023-05-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8264 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18867137 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/867137
GEOTHERMAL POWER GENERATION SYSTEMS WITH PRESSURE EXCHANGERS May 18, 2023 Pending
Array ( [id] => 19551446 [patent_doc_number] => 12135148 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-11-05 [patent_title] => Multiple well pairs for scaling the output of geothermal energy power plants [patent_app_type] => utility [patent_app_number] => 18/144466 [patent_app_country] => US [patent_app_date] => 2023-05-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 14 [patent_no_of_words] => 19470 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 81 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18144466 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/144466
Multiple well pairs for scaling the output of geothermal energy power plants May 7, 2023 Issued
Array ( [id] => 19594700 [patent_doc_number] => 12152530 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-11-26 [patent_title] => Turbine-compressor assembly and method [patent_app_type] => utility [patent_app_number] => 18/313596 [patent_app_country] => US [patent_app_date] => 2023-05-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 7 [patent_no_of_words] => 16239 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 110 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18313596 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/313596
Turbine-compressor assembly and method May 7, 2023 Issued
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