Search

Chi H. Pham

Supervisory Patent Examiner (ID: 14849, Phone: (571)272-3179 , Office: P/2471 )

Most Active Art Unit
2611
Art Unit(s)
2616, 2667, 2611, 2731, 2607, 2471, 2745, 2631
Total Applications
629
Issued Applications
521
Pending Applications
51
Abandoned Applications
57

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19922015 [patent_doc_number] => 12296277 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-05-13 [patent_title] => Zip track and system [patent_app_type] => utility [patent_app_number] => 17/856506 [patent_app_country] => US [patent_app_date] => 2022-07-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 20 [patent_no_of_words] => 0 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 171 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17856506 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/856506
Zip track and system Jun 30, 2022 Issued
Array ( [id] => 18065368 [patent_doc_number] => 20220396455 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-15 [patent_title] => MOUNTING ASSEMBLIES FOR OVERHEAD RAIL SYSTEMS AND OVERHEAD RAIL SYSTEMS TO SUPPORT A LIFT UNIT [patent_app_type] => utility [patent_app_number] => 17/839935 [patent_app_country] => US [patent_app_date] => 2022-06-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7089 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 104 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17839935 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/839935
MOUNTING ASSEMBLIES FOR OVERHEAD RAIL SYSTEMS AND OVERHEAD RAIL SYSTEMS TO SUPPORT A LIFT UNIT Jun 13, 2022 Pending
Array ( [id] => 19951544 [patent_doc_number] => 12322918 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-06-03 [patent_title] => Slidable current collector and method for contacting conductor rail [patent_app_type] => utility [patent_app_number] => 17/829528 [patent_app_country] => US [patent_app_date] => 2022-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 8895 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 147 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17829528 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/829528
Slidable current collector and method for contacting conductor rail May 31, 2022 Issued
Array ( [id] => 19344489 [patent_doc_number] => 20240253452 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-01 [patent_title] => COOLING MODULE FOR AN ELECTRIC OR HYBRID MOTOR VEHICLE, HAVING A TANGENTIAL-FLOW TURBOMACHINE [patent_app_type] => utility [patent_app_number] => 18/561408 [patent_app_country] => US [patent_app_date] => 2022-05-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4468 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 189 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18561408 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/561408
COOLING MODULE FOR AN ELECTRIC OR HYBRID MOTOR VEHICLE, HAVING A TANGENTIAL-FLOW TURBOMACHINE May 19, 2022 Pending
Array ( [id] => 18020130 [patent_doc_number] => 20220371629 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-11-24 [patent_title] => HOPPER CAR DISCHARGE GATE SEAL ASSEMBLY [patent_app_type] => utility [patent_app_number] => 17/747018 [patent_app_country] => US [patent_app_date] => 2022-05-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4372 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 202 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17747018 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/747018
Hopper car discharge gate seal assembly May 17, 2022 Issued
Array ( [id] => 18035721 [patent_doc_number] => 20220379936 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-01 [patent_title] => AUTOMATIC ARMING OF A HEAD-OF-TRAIN DEVICE TO AN END-OF-TRAIN DEVICE [patent_app_type] => utility [patent_app_number] => 17/745973 [patent_app_country] => US [patent_app_date] => 2022-05-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4911 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17745973 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/745973
AUTOMATIC ARMING OF A HEAD-OF-TRAIN DEVICE TO AN END-OF-TRAIN DEVICE May 16, 2022 Pending
Array ( [id] => 19332150 [patent_doc_number] => 20240246580 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-07-25 [patent_title] => COUPLER WITH ANGULAR POSITION DETECTION ASSEMBLY, ANGULAR POSITION DETECTION SYSTEM AND METHOD [patent_app_type] => utility [patent_app_number] => 18/290524 [patent_app_country] => US [patent_app_date] => 2022-05-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14872 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [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] => 18290524 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/290524
COUPLER WITH ANGULAR POSITION DETECTION ASSEMBLY, ANGULAR POSITION DETECTION SYSTEM AND METHOD May 8, 2022 Pending
Array ( [id] => 19381500 [patent_doc_number] => 20240271370 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-15 [patent_title] => TAMPING MACHINE FOR COMPACTING THE BALLAST BED OF A TRACK [patent_app_type] => utility [patent_app_number] => 18/289879 [patent_app_country] => US [patent_app_date] => 2022-04-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3390 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 155 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18289879 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/289879
TAMPING MACHINE FOR COMPACTING THE BALLAST BED OF A TRACK Apr 27, 2022 Pending
Array ( [id] => 17791572 [patent_doc_number] => 20220250663 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-08-11 [patent_title] => DERAILING SYSTEM [patent_app_type] => utility [patent_app_number] => 17/661226 [patent_app_country] => US [patent_app_date] => 2022-04-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13071 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 145 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17661226 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/661226
Derailing system Apr 27, 2022 Issued
Array ( [id] => 19233215 [patent_doc_number] => 20240190407 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-13 [patent_title] => METHOD AND SYSTEM FOR GENERATING COMPRESSED AIR OF AT LEAST ONE VEHICLE, PARTICULARLY AT LEAST ONE RAILWAY VEHICLE [patent_app_type] => utility [patent_app_number] => 18/556326 [patent_app_country] => US [patent_app_date] => 2022-04-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7946 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 18556326 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/556326
METHOD AND SYSTEM FOR GENERATING COMPRESSED AIR OF AT LEAST ONE VEHICLE, PARTICULARLY AT LEAST ONE RAILWAY VEHICLE Apr 25, 2022 Pending
Array ( [id] => 18725360 [patent_doc_number] => 20230339525 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-10-26 [patent_title] => SYSTEM AND METHOD FOR CONTROLLING A TRAIN TRAVELLING ALONG A RAILWAY LINE [patent_app_type] => utility [patent_app_number] => 17/660557 [patent_app_country] => US [patent_app_date] => 2022-04-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4396 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 194 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17660557 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/660557
System and method for controlling a train travelling along a railway line Apr 24, 2022 Issued
Array ( [id] => 17959599 [patent_doc_number] => 20220340179 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-10-27 [patent_title] => MAINTENANCE SHUTTLE FOR AN ELECTRIC OVERHEAD CONVEYOR [patent_app_type] => utility [patent_app_number] => 17/722462 [patent_app_country] => US [patent_app_date] => 2022-04-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2077 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 123 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17722462 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/722462
MAINTENANCE SHUTTLE FOR AN ELECTRIC OVERHEAD CONVEYOR Apr 17, 2022 Abandoned
Array ( [id] => 18035930 [patent_doc_number] => 20220380145 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-12-01 [patent_title] => Travel Robot For Moving Substrate Transfer Robot In Vacuum Chamber [patent_app_type] => utility [patent_app_number] => 17/723106 [patent_app_country] => US [patent_app_date] => 2022-04-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13482 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 749 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17723106 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/723106
Travel robot for moving substrate transfer robot in vacuum chamber Apr 17, 2022 Issued
Array ( [id] => 18020134 [patent_doc_number] => 20220371633 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-11-24 [patent_title] => Railroad Coupler Knuckle with External Weight Reducing Features [patent_app_type] => utility [patent_app_number] => 17/720623 [patent_app_country] => US [patent_app_date] => 2022-04-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3135 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 96 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17720623 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/720623
Railroad Coupler Knuckle with External Weight Reducing Features Apr 13, 2022 Pending
Array ( [id] => 20271606 [patent_doc_number] => 12441375 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-10-14 [patent_title] => Maglev or hyperloop staggered track design for reduced landing gear bump loading [patent_app_type] => utility [patent_app_number] => 17/720165 [patent_app_country] => US [patent_app_date] => 2022-04-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 0 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 194 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17720165 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/720165
Maglev or hyperloop staggered track design for reduced landing gear bump loading Apr 12, 2022 Issued
Array ( [id] => 17912669 [patent_doc_number] => 20220315064 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-10-06 [patent_title] => Hopper Car Outlet Gate Mechanical Flap to Prevent Pellet Loss [patent_app_type] => utility [patent_app_number] => 17/713388 [patent_app_country] => US [patent_app_date] => 2022-04-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12191 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 60 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17713388 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/713388
Hopper car outlet gate mechanical flap to prevent pellet loss Apr 4, 2022 Issued
Array ( [id] => 20263775 [patent_doc_number] => 12434747 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-10-07 [patent_title] => Rail-guided vehicle [patent_app_type] => utility [patent_app_number] => 17/704516 [patent_app_country] => US [patent_app_date] => 2022-03-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 9 [patent_no_of_words] => 1214 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 127 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17704516 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/704516
Rail-guided vehicle Mar 24, 2022 Issued
Array ( [id] => 18648776 [patent_doc_number] => 20230294560 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-09-21 [patent_title] => STRAY CURRENT MITIGATION ASSEMBLIES HAVING A CARBON CONDUCTION SUBASSEMBLY [patent_app_type] => utility [patent_app_number] => 17/698543 [patent_app_country] => US [patent_app_date] => 2022-03-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3365 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 89 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17698543 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/698543
STRAY CURRENT MITIGATION ASSEMBLIES HAVING A CARBON CONDUCTION SUBASSEMBLY Mar 17, 2022 Abandoned
Array ( [id] => 17882503 [patent_doc_number] => 20220297980 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-22 [patent_title] => WALKING DEVICE WITH SELF-ADAPTIVE TRACK GAUGE AND WHEEL PRESSURE FOR PREVENTING RAIL GNAWING [patent_app_type] => utility [patent_app_number] => 17/698372 [patent_app_country] => US [patent_app_date] => 2022-03-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8340 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 230 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17698372 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/698372
WALKING DEVICE WITH SELF-ADAPTIVE TRACK GAUGE AND WHEEL PRESSURE FOR PREVENTING RAIL GNAWING Mar 17, 2022 Pending
Array ( [id] => 18648962 [patent_doc_number] => 20230294748 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-09-21 [patent_title] => CROSSING GATE MECHANISM WITH INTEGRATED COVER OR DOOR DETECTION SCHEME [patent_app_type] => utility [patent_app_number] => 17/654897 [patent_app_country] => US [patent_app_date] => 2022-03-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3125 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 120 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17654897 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/654897
Crossing gate mechanism with integrated cover or door detection scheme Mar 14, 2022 Issued
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