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] => 18801456 [patent_doc_number] => 11834608 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-12-05 [patent_title] => Silica nanoparticles for crude oil recovery using carbon dioxide, and crude oil recovery method [patent_app_type] => utility [patent_app_number] => 17/780419 [patent_app_country] => US [patent_app_date] => 2020-11-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 18 [patent_figures_cnt] => 27 [patent_no_of_words] => 19283 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 146 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17780419 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/780419
Silica nanoparticles for crude oil recovery using carbon dioxide, and crude oil recovery method Nov 25, 2020 Issued
Array ( [id] => 16855100 [patent_doc_number] => 20210155845 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-05-27 [patent_title] => METHOD FOR REDUCING THE VISCOSITY OF HEAVY OIL FOR EXTRACTION, TRANSPORT IN PIPES, AND CLEANING THEREOF [patent_app_type] => utility [patent_app_number] => 17/102155 [patent_app_country] => US [patent_app_date] => 2020-11-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10149 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 53 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17102155 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/102155
METHOD FOR REDUCING THE VISCOSITY OF HEAVY OIL FOR EXTRACTION, TRANSPORT IN PIPES, AND CLEANING THEREOF Nov 22, 2020 Abandoned
Array ( [id] => 16613872 [patent_doc_number] => 20210032525 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-02-04 [patent_title] => SPACER FLUIDS AND CEMENT SLURRIES THAT INCLUDE SURFACTANTS [patent_app_type] => utility [patent_app_number] => 17/075995 [patent_app_country] => US [patent_app_date] => 2020-10-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9841 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -33 [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] => 17075995 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/075995
Spacer fluids and cement slurries that include surfactants Oct 20, 2020 Issued
Array ( [id] => 18597472 [patent_doc_number] => 20230272268 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-08-31 [patent_title] => IN-SITU COMPOSITE POLYMERIC STRUCTURES FOR FAR-FIELD DIVERSION DURING HYDRAULIC FRACTURING [patent_app_type] => utility [patent_app_number] => 17/754860 [patent_app_country] => US [patent_app_date] => 2020-10-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7521 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -27 [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] => 17754860 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/754860
In-situ composite polymeric structures for far-field diversion during hydraulic fracturing Oct 11, 2020 Issued
Array ( [id] => 18005217 [patent_doc_number] => 20220363983 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-11-17 [patent_title] => STABLE NON-AQUEOUS SUSPENSIONS OF WATER-SOLUBLE POLYSACCHARIDES, AND METHODS FOR TREATING OIL AND/OR GAS WELLS WITH A FRACTURING FLUID COMPRISING SUCH AND WATER [patent_app_type] => utility [patent_app_number] => 17/766037 [patent_app_country] => US [patent_app_date] => 2020-10-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11706 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 33 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17766037 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/766037
STABLE NON-AQUEOUS SUSPENSIONS OF WATER-SOLUBLE POLYSACCHARIDES, AND METHODS FOR TREATING OIL AND/OR GAS WELLS WITH A FRACTURING FLUID COMPRISING SUCH AND WATER Oct 5, 2020 Abandoned
Array ( [id] => 17505370 [patent_doc_number] => 20220098472 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-03-31 [patent_title] => Composition and Method for Breaking Synthetic-Polymer-Type Stimulation Fluids [patent_app_type] => utility [patent_app_number] => 16/948717 [patent_app_country] => US [patent_app_date] => 2020-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4680 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 24 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16948717 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/948717
Composition and Method for Breaking Synthetic-Polymer-Type Stimulation Fluids Sep 28, 2020 Abandoned
Array ( [id] => 18260766 [patent_doc_number] => 11608461 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-03-21 [patent_title] => Conformance for carbonate formations [patent_app_type] => utility [patent_app_number] => 17/036483 [patent_app_country] => US [patent_app_date] => 2020-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 13510 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 187 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17036483 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/036483
Conformance for carbonate formations Sep 28, 2020 Issued
Array ( [id] => 17882929 [patent_doc_number] => 20220298406 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-22 [patent_title] => Method of Using Alginates in Subterranean Wellbores [patent_app_type] => utility [patent_app_number] => 17/760717 [patent_app_country] => US [patent_app_date] => 2020-09-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4743 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 17760717 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/760717
Method of Using Alginates in Subterranean Wellbores Sep 20, 2020 Abandoned
Array ( [id] => 17163092 [patent_doc_number] => 11149181 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-10-19 [patent_title] => Method and materials to convert a drilling mud into a solid gel based lost circulation material [patent_app_type] => utility [patent_app_number] => 17/021906 [patent_app_country] => US [patent_app_date] => 2020-09-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 4868 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 291 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17021906 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/021906
Method and materials to convert a drilling mud into a solid gel based lost circulation material Sep 14, 2020 Issued
Array ( [id] => 16541208 [patent_doc_number] => 20200407621 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-12-31 [patent_title] => EMULSIFIED DRILLING FLUIDS AND METHODS OF MAKING AND USE THEREOF [patent_app_type] => utility [patent_app_number] => 17/016997 [patent_app_country] => US [patent_app_date] => 2020-09-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8478 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 17016997 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/016997
EMULSIFIED DRILLING FLUIDS AND METHODS OF MAKING AND USE THEREOF Sep 9, 2020 Abandoned
Array ( [id] => 18289979 [patent_doc_number] => 11618842 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-04-04 [patent_title] => Nanosized dendrimeric epoxy resin to prevent casing-casing annulus pressure issues [patent_app_type] => utility [patent_app_number] => 17/014148 [patent_app_country] => US [patent_app_date] => 2020-09-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 6776 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 96 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17014148 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/014148
Nanosized dendrimeric epoxy resin to prevent casing-casing annulus pressure issues Sep 7, 2020 Issued
Array ( [id] => 16525916 [patent_doc_number] => 20200399996 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-12-24 [patent_title] => METHOD AND APPARATUS FOR EXTRACTING HEAVY OIL [patent_app_type] => utility [patent_app_number] => 17/012931 [patent_app_country] => US [patent_app_date] => 2020-09-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4370 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 108 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17012931 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/012931
METHOD AND APPARATUS FOR EXTRACTING HEAVY OIL Sep 3, 2020 Abandoned
Array ( [id] => 17444570 [patent_doc_number] => 20220065075 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-03-03 [patent_title] => Method of Removing Non-Aqueous Drilling Mud with Banana Containing Fluid [patent_app_type] => utility [patent_app_number] => 17/011787 [patent_app_country] => US [patent_app_date] => 2020-09-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5746 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 17011787 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/011787
Method of removing non-aqueous drilling mud with banana containing fluid Sep 2, 2020 Issued
Array ( [id] => 16673306 [patent_doc_number] => 20210062069 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-03-04 [patent_title] => FRAC FLUIDS FOR FAR FIELD DIVERSION [patent_app_type] => utility [patent_app_number] => 17/001848 [patent_app_country] => US [patent_app_date] => 2020-08-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13081 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [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] => 17001848 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/001848
Frac fluids for far field diversion Aug 24, 2020 Issued
Array ( [id] => 20921285 [patent_doc_number] => 12716334 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-08-25 [patent_title] => Methods and systems for producing organic compounds in a subterranean environment [patent_app_type] => utility [patent_app_number] => 17/632717 [patent_app_country] => US [patent_app_date] => 2020-08-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3553 [patent_no_of_claims] => 20 [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] => 17632717 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/632717
METHODS AND SYSTEMS FOR PRODUCING ORGANIC COMPOUNDS IN A SUBTERRANEAN ENVIRONMENT Aug 19, 2020 Pending
Array ( [id] => 17414695 [patent_doc_number] => 20220049599 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-02-17 [patent_title] => MAGNETIC EMULSIONS AS CONTRAST AGENTS FOR SUBSURFACE APPLICATIONS [patent_app_type] => utility [patent_app_number] => 16/992480 [patent_app_country] => US [patent_app_date] => 2020-08-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4555 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 5 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16992480 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/992480
Magnetic emulsions as contrast agents for subsurface applications Aug 12, 2020 Issued
Array ( [id] => 17649831 [patent_doc_number] => 11352545 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-06-07 [patent_title] => Lost circulation material for reservoir section [patent_app_type] => utility [patent_app_number] => 16/991817 [patent_app_country] => US [patent_app_date] => 2020-08-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 9246 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 224 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16991817 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/991817
Lost circulation material for reservoir section Aug 11, 2020 Issued
Array ( [id] => 18260767 [patent_doc_number] => 11608462 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-03-21 [patent_title] => Drilling fluids comprising deep eutectic solvents and methods for drilling wells in subterranean formations [patent_app_type] => utility [patent_app_number] => 16/991531 [patent_app_country] => US [patent_app_date] => 2020-08-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9667 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 387 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16991531 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/991531
Drilling fluids comprising deep eutectic solvents and methods for drilling wells in subterranean formations Aug 11, 2020 Issued
Array ( [id] => 17930044 [patent_doc_number] => 20220325169 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-10-13 [patent_title] => MULTIFUNCTIONAL ADDITIVE FOR USE IN WELLBORE SERVICING [patent_app_type] => utility [patent_app_number] => 17/631364 [patent_app_country] => US [patent_app_date] => 2020-08-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6907 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 17631364 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/631364
MULTIFUNCTIONAL ADDITIVE FOR USE IN WELLBORE SERVICING Aug 11, 2020 Pending
Array ( [id] => 16453237 [patent_doc_number] => 20200362663 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-11-19 [patent_title] => FLOW CONTROL IN SUBTERRANEAN WELLS [patent_app_type] => utility [patent_app_number] => 16/987094 [patent_app_country] => US [patent_app_date] => 2020-08-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14241 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -36 [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] => 16987094 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/987094
Flow control in subterranean wells Aug 5, 2020 Issued
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