Search

Sing P. Chan

Examiner (ID: 19410, Phone: (571)272-1225 , Office: P/1745 )

Most Active Art Unit
1745
Art Unit(s)
1791, 1745, 1734
Total Applications
1303
Issued Applications
943
Pending Applications
36
Abandoned Applications
325

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20569089 [patent_doc_number] => 20260063010 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-03-05 [patent_title] => CORE BARREL HEAD ASSEMBLY WITH AN INTEGRATED SAMPLE ORIENTATION TOOL AND SYSTEM FOR USING SAME [patent_app_type] => utility [patent_app_number] => 19/385286 [patent_app_country] => US [patent_app_date] => 2025-11-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6326 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -1 [patent_words_short_claim] => 140 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19385286 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/385286
CORE BARREL HEAD ASSEMBLY WITH AN INTEGRATED SAMPLE ORIENTATION TOOL AND SYSTEM FOR USING SAME Nov 10, 2025 Pending
Array ( [id] => 20542658 [patent_doc_number] => 20260049548 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-02-19 [patent_title] => DOWNHOLE SENSOR ASSEMBLY FOR ALIGNMENT MEASUREMENT [patent_app_type] => utility [patent_app_number] => 19/370007 [patent_app_country] => US [patent_app_date] => 2025-10-27 [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] => -13 [patent_words_short_claim] => 135 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19370007 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/370007
DOWNHOLE SENSOR ASSEMBLY FOR ALIGNMENT MEASUREMENT Oct 26, 2025 Pending
Array ( [id] => 20722851 [patent_doc_number] => 20260139554 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-05-21 [patent_title] => SINKER BAR WITH CENTRALIZER [patent_app_type] => utility [patent_app_number] => 19/306781 [patent_app_country] => US [patent_app_date] => 2025-08-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5396 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 79 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19306781 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/306781
SINKER BAR WITH CENTRALIZER Aug 20, 2025 Pending
Array ( [id] => 20350369 [patent_doc_number] => 20250347221 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-11-13 [patent_title] => METHOD FOR IMPROVING WELL INTEGRITY MANAGEMENT FOR GAS LIFT OIL WELLS [patent_app_type] => utility [patent_app_number] => 19/278243 [patent_app_country] => US [patent_app_date] => 2025-07-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1219 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [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] => 19278243 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/278243
METHOD FOR IMPROVING WELL INTEGRITY MANAGEMENT FOR GAS LIFT OIL WELLS Jul 22, 2025 Pending
Array ( [id] => 20350337 [patent_doc_number] => 20250347189 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-11-13 [patent_title] => PENETRATOR SYSTEM FOR ELECTRICAL SUBMERSIBLE PUMPS [patent_app_type] => utility [patent_app_number] => 19/277150 [patent_app_country] => US [patent_app_date] => 2025-07-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1271 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 160 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19277150 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/277150
PENETRATOR SYSTEM FOR ELECTRICAL SUBMERSIBLE PUMPS Jul 21, 2025 Pending
Array ( [id] => 20337020 [patent_doc_number] => 20250341140 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-11-06 [patent_title] => Automated Drilling-Fluid Additive System and Method [patent_app_type] => utility [patent_app_number] => 19/272431 [patent_app_country] => US [patent_app_date] => 2025-07-17 [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] => -3 [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] => 19272431 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/272431
Automated Drilling-Fluid Additive System and Method Jul 16, 2025 Pending
Array ( [id] => 20665336 [patent_doc_number] => 12607098 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-04-21 [patent_title] => Junction orienting interface for a multilateral well [patent_app_type] => utility [patent_app_number] => 19/259291 [patent_app_country] => US [patent_app_date] => 2025-07-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 15 [patent_no_of_words] => 0 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 120 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19259291 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/259291
Junction orienting interface for a multilateral well Jul 2, 2025 Issued
Array ( [id] => 20459883 [patent_doc_number] => 20260009306 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-01-08 [patent_title] => HIGHLY-SEALED RETRIEVABLE ANCHORING PACKER [patent_app_type] => utility [patent_app_number] => 19/239288 [patent_app_country] => US [patent_app_date] => 2025-06-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1182 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 264 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19239288 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/239288
Highly-sealed retrievable anchoring packer Jun 15, 2025 Issued
19/135896 A RELEASE ADAPTER FOR AN END-FITTING AND A SUBSEA CONNECTOR ASSEMBLY Jun 4, 2025 Pending
Array ( [id] => 20628230 [patent_doc_number] => 20260092514 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-04-02 [patent_title] => Frac Dart [patent_app_type] => utility [patent_app_number] => 19/229662 [patent_app_country] => US [patent_app_date] => 2025-06-05 [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] => -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] => 19229662 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/229662
Frac dart Jun 4, 2025 Issued
Array ( [id] => 20608784 [patent_doc_number] => 12584376 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-03-24 [patent_title] => Debris shield for ball valve actuation [patent_app_type] => utility [patent_app_number] => 19/216270 [patent_app_country] => US [patent_app_date] => 2025-05-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 0 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 78 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19216270 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/216270
Debris shield for ball valve actuation May 21, 2025 Issued
Array ( [id] => 20715843 [patent_doc_number] => 12631084 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-05-19 [patent_title] => High expansion aggregate seal [patent_app_type] => utility [patent_app_number] => 19/214075 [patent_app_country] => US [patent_app_date] => 2025-05-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 11 [patent_no_of_words] => 0 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 177 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19214075 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/214075
High expansion aggregate seal May 20, 2025 Issued
Array ( [id] => 20194173 [patent_doc_number] => 20250270883 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-08-28 [patent_title] => TWO-PART DRILLING AND RUNNING TOOL [patent_app_type] => utility [patent_app_number] => 19/205002 [patent_app_country] => US [patent_app_date] => 2025-05-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4301 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -33 [patent_words_short_claim] => 51 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19205002 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/205002
TWO-PART DRILLING AND RUNNING TOOL May 11, 2025 Pending
Array ( [id] => 20379313 [patent_doc_number] => 20250361806 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-11-27 [patent_title] => ESTIMATION OF ROCK ABRASIVENESS AND ROCK STRENGTH USING BIT RESPONSE DATA [patent_app_type] => utility [patent_app_number] => 19/198323 [patent_app_country] => US [patent_app_date] => 2025-05-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6965 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 82 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19198323 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/198323
ESTIMATION OF ROCK ABRASIVENESS AND ROCK STRENGTH USING BIT RESPONSE DATA May 4, 2025 Pending
Array ( [id] => 20364659 [patent_doc_number] => 20250354471 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-11-20 [patent_title] => CUTTER FORCES AND WEAR SEVERITY DETERMINATION FOR A DRILL BIT FOR DRILLING A WELLBORE [patent_app_type] => utility [patent_app_number] => 19/198377 [patent_app_country] => US [patent_app_date] => 2025-05-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2610 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 57 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19198377 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/198377
CUTTER FORCES AND WEAR SEVERITY DETERMINATION FOR A DRILL BIT FOR DRILLING A WELLBORE May 4, 2025 Pending
Array ( [id] => 20100777 [patent_doc_number] => 20250230713 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-17 [patent_title] => MULTI PASS TWO-PART DRILLING/RUNNING AND ACTIVATION TOOL [patent_app_type] => utility [patent_app_number] => 19/096269 [patent_app_country] => US [patent_app_date] => 2025-03-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5653 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -29 [patent_words_short_claim] => 93 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19096269 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/096269
MULTI PASS TWO-PART DRILLING/RUNNING AND ACTIVATION TOOL Mar 30, 2025 Pending
Array ( [id] => 20288897 [patent_doc_number] => 20250314140 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-09 [patent_title] => DIRECTIONAL DRILL VICE AND METHOD [patent_app_type] => utility [patent_app_number] => 19/088301 [patent_app_country] => US [patent_app_date] => 2025-03-24 [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] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19088301 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/088301
DIRECTIONAL DRILL VICE AND METHOD Mar 23, 2025 Pending
Array ( [id] => 20060054 [patent_doc_number] => 20250198276 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-19 [patent_title] => Wellbore Depth Instrument [patent_app_type] => utility [patent_app_number] => 19/066162 [patent_app_country] => US [patent_app_date] => 2025-02-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2379 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 353 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19066162 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/066162
Wellbore Depth Instrument Feb 27, 2025 Pending
Array ( [id] => 20060021 [patent_doc_number] => 20250198243 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-19 [patent_title] => Wireline Cased-Hole Standoff [patent_app_type] => utility [patent_app_number] => 19/065512 [patent_app_country] => US [patent_app_date] => 2025-02-27 [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] => -4 [patent_words_short_claim] => 92 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19065512 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/065512
Wireline Cased-Hole Standoff Feb 26, 2025 Pending
Array ( [id] => 20060058 [patent_doc_number] => 20250198280 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-19 [patent_title] => COOLING WELLBORE LOGGING TOOLS [patent_app_type] => utility [patent_app_number] => 19/064794 [patent_app_country] => US [patent_app_date] => 2025-02-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2185 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 131 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19064794 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/064794
COOLING WELLBORE LOGGING TOOLS Feb 26, 2025 Pending
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