Search

Sangwoo Ahn

Examiner (ID: 3211, Phone: (571)272-5626 , Office: P/2166 )

Most Active Art Unit
2166
Art Unit(s)
2168, 2166
Total Applications
369
Issued Applications
235
Pending Applications
10
Abandoned Applications
125

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19832196 [patent_doc_number] => 20250083982 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-13 [patent_title] => MICROORGANISM GENERATION SYSTEM FOR SLUDGE-FREE AEROBIC TANK AND MANUFACTURE METHOD THEREFOR [patent_app_type] => utility [patent_app_number] => 18/799952 [patent_app_country] => US [patent_app_date] => 2024-08-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4288 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 257 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18799952 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/799952
Microorganism generation system for sludge-free aerobic tank and manufacture method therefor Aug 8, 2024 Issued
Array ( [id] => 20452919 [patent_doc_number] => 12515969 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-01-06 [patent_title] => Method for wastewater treatment control through microorganism metabolic pathway optimization [patent_app_type] => utility [patent_app_number] => 18/766208 [patent_app_country] => US [patent_app_date] => 2024-07-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 8508 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 272 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18766208 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/766208
Method for wastewater treatment control through microorganism metabolic pathway optimization Jul 7, 2024 Issued
Array ( [id] => 19448765 [patent_doc_number] => 20240308895 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-19 [patent_title] => ENERGY EFFICIENT DECENTRALIZED WASTEWATER REUSE SYSTEM INCORPORATING MULTIPLE STAGES OF AEROBIC BIOREACTORS AND RECIRCULATION FOR ORGANICS AND NITROGEN REDUCTION [patent_app_type] => utility [patent_app_number] => 18/671853 [patent_app_country] => US [patent_app_date] => 2024-05-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4932 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [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] => 18671853 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/671853
Energy efficient decentralized wastewater reuse system incorporating multiple stages of aerobic bioreactors and recirculation for organics and nitrogen reduction May 21, 2024 Issued
Array ( [id] => 19381538 [patent_doc_number] => 20240271408 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-15 [patent_title] => CROSSFLOW SETTING DEVICES AND METHODS OF USE [patent_app_type] => utility [patent_app_number] => 18/647159 [patent_app_country] => US [patent_app_date] => 2024-04-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3531 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 304 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18647159 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/647159
Crossflow setting devices and methods of use Apr 25, 2024 Issued
Array ( [id] => 19381538 [patent_doc_number] => 20240271408 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-15 [patent_title] => CROSSFLOW SETTING DEVICES AND METHODS OF USE [patent_app_type] => utility [patent_app_number] => 18/647159 [patent_app_country] => US [patent_app_date] => 2024-04-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3531 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 304 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18647159 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/647159
Crossflow setting devices and methods of use Apr 25, 2024 Issued
Array ( [id] => 19380744 [patent_doc_number] => 20240270614 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-15 [patent_title] => WATER MANAGEMENT SYSTEM [patent_app_type] => utility [patent_app_number] => 18/642121 [patent_app_country] => US [patent_app_date] => 2024-04-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4175 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => 0 [patent_words_short_claim] => 97 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18642121 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/642121
WATER MANAGEMENT SYSTEM Apr 21, 2024 Abandoned
Array ( [id] => 19360691 [patent_doc_number] => 20240262725 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-08 [patent_title] => SYSTEMS AND METHODS FOR CREATING AND SEGMENTING TREATMENT PROCESSES [patent_app_type] => utility [patent_app_number] => 18/638847 [patent_app_country] => US [patent_app_date] => 2024-04-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8415 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 124 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18638847 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/638847
SYSTEMS AND METHODS FOR CREATING AND SEGMENTING TREATMENT PROCESSES Apr 17, 2024 Pending
Array ( [id] => 19360692 [patent_doc_number] => 20240262726 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-08 [patent_title] => METHOD AND APPARATUS FOR MULTI-DESELECTION IN WASTEWATER TREATMENT [patent_app_type] => utility [patent_app_number] => 18/637779 [patent_app_country] => US [patent_app_date] => 2024-04-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 17745 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 249 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18637779 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/637779
METHOD AND APPARATUS FOR MULTI-DESELECTION IN WASTEWATER TREATMENT Apr 16, 2024 Pending
Array ( [id] => 19140951 [patent_doc_number] => 20240139757 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-02 [patent_title] => SYSTEM FOR COLLECTING AND HARVESTING ALGAE FOR BIOFUEL CONVERSION [patent_app_type] => utility [patent_app_number] => 18/407757 [patent_app_country] => US [patent_app_date] => 2024-01-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5156 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 146 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18407757 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/407757
SYSTEM FOR COLLECTING AND HARVESTING ALGAE FOR BIOFUEL CONVERSION Jan 8, 2024 Abandoned
Array ( [id] => 19112588 [patent_doc_number] => 20240124338 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-18 [patent_title] => LIQUID EFFLUENT TREATMENT MODULE [patent_app_type] => utility [patent_app_number] => 18/399583 [patent_app_country] => US [patent_app_date] => 2023-12-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5000 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 242 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18399583 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/399583
LIQUID EFFLUENT TREATMENT MODULE Dec 27, 2023 Abandoned
Array ( [id] => 19082991 [patent_doc_number] => 20240109792 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-04 [patent_title] => STORMWATER RUNOFF TREATMENT SUBSTRATE AND STORMWATER BIORETENTION SYSTEM CONSTRUCTED BY USING SUBSTRATE [patent_app_type] => utility [patent_app_number] => 18/534687 [patent_app_country] => US [patent_app_date] => 2023-12-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3588 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -3 [patent_words_short_claim] => 54 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18534687 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/534687
Stormwater runoff treatment substrate comprising pyrite substrate layer and biochar substrate layer Dec 9, 2023 Issued
Array ( [id] => 19171401 [patent_doc_number] => 20240157375 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-16 [patent_title] => CENTRIFUGAL SEPARATOR [patent_app_type] => utility [patent_app_number] => 18/503428 [patent_app_country] => US [patent_app_date] => 2023-11-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3094 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 130 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18503428 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/503428
CENTRIFUGAL SEPARATOR Nov 6, 2023 Pending
Array ( [id] => 19171401 [patent_doc_number] => 20240157375 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-16 [patent_title] => CENTRIFUGAL SEPARATOR [patent_app_type] => utility [patent_app_number] => 18/503428 [patent_app_country] => US [patent_app_date] => 2023-11-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3094 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 130 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18503428 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/503428
CENTRIFUGAL SEPARATOR Nov 6, 2023 Pending
Array ( [id] => 19140851 [patent_doc_number] => 20240139652 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-02 [patent_title] => Solids Removal System and Method [patent_app_type] => utility [patent_app_number] => 18/496204 [patent_app_country] => US [patent_app_date] => 2023-10-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6882 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 21 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18496204 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/496204
Solids Removal System and Method Oct 26, 2023 Pending
Array ( [id] => 18987626 [patent_doc_number] => 20240059595 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-22 [patent_title] => PROCESS FOR MANAGING WORMS IN MEMBRANE AERATED BIOFILM [patent_app_type] => utility [patent_app_number] => 18/495373 [patent_app_country] => US [patent_app_date] => 2023-10-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2212 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 43 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18495373 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/495373
PROCESS FOR MANAGING WORMS IN MEMBRANE AERATED BIOFILM Oct 25, 2023 Pending
Array ( [id] => 18987625 [patent_doc_number] => 20240059594 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-22 [patent_title] => Simultaneous Nitrification/Denitrification (SNDN) in Sequencing Batch Reactor Applications [patent_app_type] => utility [patent_app_number] => 18/382085 [patent_app_country] => US [patent_app_date] => 2023-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6027 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -1 [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] => 18382085 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/382085
Simultaneous nitrification/denitrification (SNDN) in sequencing batch reactor applications Oct 19, 2023 Issued
Array ( [id] => 19731046 [patent_doc_number] => 12209036 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-01-28 [patent_title] => Liquid dispensing device [patent_app_type] => utility [patent_app_number] => 18/380738 [patent_app_country] => US [patent_app_date] => 2023-10-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 33 [patent_figures_cnt] => 40 [patent_no_of_words] => 36659 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 290 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18380738 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/380738
Liquid dispensing device Oct 16, 2023 Issued
Array ( [id] => 18954970 [patent_doc_number] => 20240043297 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-08 [patent_title] => BIO-ELECTROCHEMICAL SENSOR, SYSTEM AND METHOD FOR MONITORING AND CONTROLLING ORGANIC CARBON LEVELS IN A WASTEWATER TREATMENT PROCESS [patent_app_type] => utility [patent_app_number] => 18/484771 [patent_app_country] => US [patent_app_date] => 2023-10-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15659 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 95 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18484771 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/484771
BIO-ELECTROCHEMICAL SENSOR, SYSTEM AND METHOD FOR MONITORING AND CONTROLLING ORGANIC CARBON LEVELS IN A WASTEWATER TREATMENT PROCESS Oct 10, 2023 Abandoned
Array ( [id] => 18954970 [patent_doc_number] => 20240043297 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-08 [patent_title] => BIO-ELECTROCHEMICAL SENSOR, SYSTEM AND METHOD FOR MONITORING AND CONTROLLING ORGANIC CARBON LEVELS IN A WASTEWATER TREATMENT PROCESS [patent_app_type] => utility [patent_app_number] => 18/484771 [patent_app_country] => US [patent_app_date] => 2023-10-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 15659 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 95 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18484771 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/484771
BIO-ELECTROCHEMICAL SENSOR, SYSTEM AND METHOD FOR MONITORING AND CONTROLLING ORGANIC CARBON LEVELS IN A WASTEWATER TREATMENT PROCESS Oct 10, 2023 Abandoned
Array ( [id] => 19291451 [patent_doc_number] => 12030797 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-07-09 [patent_title] => System and method for wastewater treatment control through microorganism metabolic pathway optimization [patent_app_type] => utility [patent_app_number] => 18/476235 [patent_app_country] => US [patent_app_date] => 2023-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 13312 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 338 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18476235 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/476235
System and method for wastewater treatment control through microorganism metabolic pathway optimization Sep 26, 2023 Issued
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