Search

Angela Marie Ditran Leff

Examiner (ID: 14493)

Most Active Art Unit
3674
Art Unit(s)
3674, 3676
Total Applications
1207
Issued Applications
793
Pending Applications
98
Abandoned Applications
329

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19067462 [patent_doc_number] => 20240101888 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-28 [patent_title] => Enhanced Carbon Sequestration via Foam Cementing [patent_app_type] => utility [patent_app_number] => 18/515803 [patent_app_country] => US [patent_app_date] => 2023-11-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11816 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 18515803 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/515803
Enhanced carbon sequestration via foam cementing Nov 20, 2023 Issued
Array ( [id] => 20834462 [patent_doc_number] => 20260193965 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-07-09 [patent_title] => Electrical Power Generation Using Reversible ESP Pump for Unconventional Wells [patent_app_type] => utility [patent_app_number] => 19/129294 [patent_app_country] => US [patent_app_date] => 2023-11-14 [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] => -17 [patent_words_short_claim] => 110 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19129294 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/129294
Electrical Power Generation Using Reversible ESP Pump for Unconventional Wells Nov 13, 2023 Pending
Array ( [id] => 19034373 [patent_doc_number] => 20240084188 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-14 [patent_title] => SUPER HYDROPHOBIC 2D NANOSHEET MATERIALS FOR IMPROVED OIL RECOVERY [patent_app_type] => utility [patent_app_number] => 18/508715 [patent_app_country] => US [patent_app_date] => 2023-11-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4147 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 26 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18508715 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/508715
SUPER HYDROPHOBIC 2D NANOSHEET MATERIALS FOR IMPROVED OIL RECOVERY Nov 13, 2023 Pending
Array ( [id] => 20007657 [patent_doc_number] => 20250145879 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-05-08 [patent_title] => Method of Detecting Flow Assurance Using a Tagged Asphaltene Inhibitor [patent_app_type] => utility [patent_app_number] => 18/387939 [patent_app_country] => US [patent_app_date] => 2023-11-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2102 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 144 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18387939 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/387939
Method of Detecting Flow Assurance Using a Tagged Asphaltene Inhibitor Nov 7, 2023 Abandoned
Array ( [id] => 19034377 [patent_doc_number] => 20240084192 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-14 [patent_title] => FLOWBACK AID FOR FRACTURING FLUIDS [patent_app_type] => utility [patent_app_number] => 18/502412 [patent_app_country] => US [patent_app_date] => 2023-11-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5016 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 35 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18502412 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/502412
Flowback aid for fracturing fluids Nov 5, 2023 Issued
Array ( [id] => 19142386 [patent_doc_number] => 20240141223 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-05-02 [patent_title] => ENVIRONMENTALLY FRIENDLY NANOSHALE INHIBITOR IN AQUEOUS-BASED WELLBORE FLUIDS [patent_app_type] => utility [patent_app_number] => 18/496760 [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] => 4148 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 23 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18496760 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/496760
ENVIRONMENTALLY FRIENDLY NANOSHALE INHIBITOR IN AQUEOUS-BASED WELLBORE FLUIDS Oct 26, 2023 Abandoned
Array ( [id] => 19051100 [patent_doc_number] => 20240093069 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-21 [patent_title] => Activatable Polymer Composition Comprising At Least Two Carboxylic Acids as Blowing Agent [patent_app_type] => utility [patent_app_number] => 18/494957 [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] => 19821 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 18494957 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/494957
Activatable Polymer Composition Comprising At Least Two Carboxylic Acids as Blowing Agent Oct 25, 2023 Pending
Array ( [id] => 18955412 [patent_doc_number] => 20240043739 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-02-08 [patent_title] => FRAC FLUIDS FOR FAR FIELD DIVERSION [patent_app_type] => utility [patent_app_number] => 18/490356 [patent_app_country] => US [patent_app_date] => 2023-10-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13394 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => 0 [patent_words_short_claim] => 159 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18490356 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/490356
FRAC FLUIDS FOR FAR FIELD DIVERSION Oct 18, 2023 Abandoned
Array ( [id] => 19932305 [patent_doc_number] => 12305504 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-05-20 [patent_title] => Quantifying zonal flow in multi-lateral wells via taggants of fluids [patent_app_type] => utility [patent_app_number] => 18/490507 [patent_app_country] => US [patent_app_date] => 2023-10-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 19 [patent_figures_cnt] => 19 [patent_no_of_words] => 8208 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 307 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18490507 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/490507
Quantifying zonal flow in multi-lateral wells via taggants of fluids Oct 18, 2023 Issued
Array ( [id] => 19097909 [patent_doc_number] => 20240117137 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-11 [patent_title] => POULTRY WASTE BIOCHAR FORMULATION AND METHOD FOR PLASTICS [patent_app_type] => utility [patent_app_number] => 18/378289 [patent_app_country] => US [patent_app_date] => 2023-10-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4636 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 42 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18378289 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/378289
POULTRY WASTE BIOCHAR FORMULATION AND METHOD FOR PLASTICS Oct 9, 2023 Pending
Array ( [id] => 20708373 [patent_doc_number] => 20260132701 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-05-14 [patent_title] => HYDRATE MANAGEMENT METHOD [patent_app_type] => utility [patent_app_number] => 19/116387 [patent_app_country] => US [patent_app_date] => 2023-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 348 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 28 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19116387 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/116387
HYDRATE MANAGEMENT METHOD Sep 28, 2023 Pending
Array ( [id] => 19876809 [patent_doc_number] => 20250109066 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-04-03 [patent_title] => HYDRAULIC CEMENT FOR CARBON DIOXIDE ENVIRONMENTS [patent_app_type] => utility [patent_app_number] => 18/375251 [patent_app_country] => US [patent_app_date] => 2023-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8667 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 27 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18375251 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/375251
HYDRAULIC CEMENT FOR CARBON DIOXIDE ENVIRONMENTS Sep 28, 2023 Pending
Array ( [id] => 18923103 [patent_doc_number] => 20240026107 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-01-25 [patent_title] => POLYPROPYLENE RESIN EXTRUDED FOAM PARTICLES [patent_app_type] => utility [patent_app_number] => 18/374160 [patent_app_country] => US [patent_app_date] => 2023-09-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13881 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 83 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18374160 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/374160
POLYPROPYLENE RESIN EXTRUDED FOAM PARTICLES Sep 27, 2023 Pending
Array ( [id] => 18923206 [patent_doc_number] => 20240026210 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-01-25 [patent_title] => FORMULATION FOR INHIBITING WATER PERMEATION IN AN EXTRACTION WELL OF A HYDROCARBON FLUID FROM AN UNDERGROUND RESERVOIR [patent_app_type] => utility [patent_app_number] => 18/373322 [patent_app_country] => US [patent_app_date] => 2023-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8711 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 42 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18373322 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/373322
Formulation for inhibiting water permeation in an extraction well of a hydrocarbon fluid from an underground reservoir Sep 26, 2023 Issued
Array ( [id] => 19862504 [patent_doc_number] => 20250101290 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-27 [patent_title] => LOST CIRCULATION COMPOSITE MATERIALS AND METHODS AND SYSTEMS RELATED THERETO [patent_app_type] => utility [patent_app_number] => 18/471784 [patent_app_country] => US [patent_app_date] => 2023-09-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9150 [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] => 18471784 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/471784
Lost circulation composite materials and methods and systems related thereto Sep 20, 2023 Issued
Array ( [id] => 20548888 [patent_doc_number] => 12559669 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-02-24 [patent_title] => Acid stimulation methods [patent_app_type] => utility [patent_app_number] => 18/470882 [patent_app_country] => US [patent_app_date] => 2023-09-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 2774 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 103 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18470882 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/470882
Acid stimulation methods Sep 19, 2023 Issued
Array ( [id] => 20645963 [patent_doc_number] => 12600900 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-04-14 [patent_title] => Acidizing compositions for improved fluid performance [patent_app_type] => utility [patent_app_number] => 18/465212 [patent_app_country] => US [patent_app_date] => 2023-09-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1052 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 84 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18465212 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/465212
Acidizing compositions for improved fluid performance Sep 11, 2023 Issued
Array ( [id] => 19098011 [patent_doc_number] => 20240117239 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-04-11 [patent_title] => COMBINATION PRODUCTS CONTAINING ANTI-AGGLOMERANT LOW DOSE HYDRATE INHIBITORS AND CORROSION INHIBITORS WITH IMPROVED CORROSION RESISTANCE [patent_app_type] => utility [patent_app_number] => 18/461676 [patent_app_country] => US [patent_app_date] => 2023-09-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11871 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 61 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18461676 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/461676
COMBINATION PRODUCTS CONTAINING ANTI-AGGLOMERANT LOW DOSE HYDRATE INHIBITORS AND CORROSION INHIBITORS WITH IMPROVED CORROSION RESISTANCE Sep 5, 2023 Pending
Array ( [id] => 20594161 [patent_doc_number] => 12577867 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-03-17 [patent_title] => Treatment of subterranean formations [patent_app_type] => utility [patent_app_number] => 18/461578 [patent_app_country] => US [patent_app_date] => 2023-09-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 0 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 126 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18461578 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/461578
Treatment of subterranean formations Sep 5, 2023 Issued
Array ( [id] => 19816627 [patent_doc_number] => 20250074834 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-06 [patent_title] => EUTECTIC METAL ALLOY-CONTAINING CEMENT AND METHODS OF USE THEREOF [patent_app_type] => utility [patent_app_number] => 18/459139 [patent_app_country] => US [patent_app_date] => 2023-08-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2458 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 13 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18459139 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/459139
Eutectic metal alloy-containing cement and methods of use thereof Aug 30, 2023 Issued
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