Search

Stephen J. Castellano

Examiner (ID: 19177, Phone: (571)272-4535 , Office: P/3781 )

Most Active Art Unit
3727
Art Unit(s)
3781, 3733, 2401, 3727, 3207
Total Applications
3303
Issued Applications
2196
Pending Applications
193
Abandoned Applications
937

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 20600292 [patent_doc_number] => 20260078297 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-03-19 [patent_title] => STABILIZED CO2 FOAM COMPOSITIONS FOR SUBTERANEAN FRACTURING APPLICATIONS AND COMPOSITIONS RELATED THERETO [patent_app_type] => utility [patent_app_number] => 19/397413 [patent_app_country] => US [patent_app_date] => 2025-11-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2324 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19397413 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/397413
STABILIZED CO2 FOAM COMPOSITIONS FOR SUBTERANEAN FRACTURING APPLICATIONS AND COMPOSITIONS RELATED THERETO Nov 20, 2025 Pending
Array ( [id] => 20658210 [patent_doc_number] => 20260110250 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-04-23 [patent_title] => METHOD FOR COAL SEAM GAS SEEPAGE DISPLACEMENT, SEEPAGE WATER LOCKING AND DUST REDUCTION [patent_app_type] => utility [patent_app_number] => 19/368549 [patent_app_country] => US [patent_app_date] => 2025-10-24 [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] => -9 [patent_words_short_claim] => 269 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19368549 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/368549
METHOD FOR COAL SEAM GAS SEEPAGE DISPLACEMENT, SEEPAGE WATER LOCKING AND DUST REDUCTION Oct 23, 2025 Pending
Array ( [id] => 20640108 [patent_doc_number] => 20260098461 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-04-09 [patent_title] => SYSTEM AND METHOD FOR ENHANCED PETROLEUM PRODUCT RECOVERY [patent_app_type] => utility [patent_app_number] => 19/359446 [patent_app_country] => US [patent_app_date] => 2025-10-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6753 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [patent_words_short_claim] => 125 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19359446 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/359446
SYSTEM AND METHOD FOR ENHANCED PETROLEUM PRODUCT RECOVERY Oct 14, 2025 Pending
Array ( [id] => 20511506 [patent_doc_number] => 20260035607 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-02-05 [patent_title] => Well Barriers For Subterranean Storage Of Carbon Dioxide [patent_app_type] => utility [patent_app_number] => 19/355094 [patent_app_country] => US [patent_app_date] => 2025-10-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10042 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 286 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19355094 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/355094
Well Barriers For Subterranean Storage Of Carbon Dioxide Oct 9, 2025 Pending
Array ( [id] => 20486093 [patent_doc_number] => 20260022291 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-01-22 [patent_title] => FUNCTIONALIZED NANOPARTICLES AS WETABILITY MODIFIER [patent_app_type] => utility [patent_app_number] => 19/342222 [patent_app_country] => US [patent_app_date] => 2025-09-26 [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] => 45 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19342222 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/342222
FUNCTIONALIZED NANOPARTICLES AS WETABILITY MODIFIER Sep 25, 2025 Pending
Array ( [id] => 20585929 [patent_doc_number] => 20260071521 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-03-12 [patent_title] => ENHANCED OIL RECOVERY USING CARBONATED WATER AND TWO SALT SOLUTIONS [patent_app_type] => utility [patent_app_number] => 19/329232 [patent_app_country] => US [patent_app_date] => 2025-09-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1160 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [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] => 19329232 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/329232
ENHANCED OIL RECOVERY USING CARBONATED WATER AND TWO SALT SOLUTIONS Sep 14, 2025 Pending
Array ( [id] => 20445715 [patent_doc_number] => 20260002432 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-01-01 [patent_title] => METHOD OF ARTIFICIALLY ASSISTED FILLING FOR SAND CONTROL AND WATER CONTROL OF FRACTURED RESERVOIR AND METHOD FOR EVALUATING FILLING EFFECT [patent_app_type] => utility [patent_app_number] => 19/321256 [patent_app_country] => US [patent_app_date] => 2025-09-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1611 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 463 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19321256 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/321256
Method of artificially assisted filling for sand control and water control of fractured reservoir and method for evaluating filling effect Sep 6, 2025 Issued
Array ( [id] => 20393871 [patent_doc_number] => 20250369346 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-12-04 [patent_title] => PARTIALLY DEGRADABLE PARTICULATES AS TIME-RELEASED TRACERS FOR ACIDIZED AND FRACTURED GAS WELLS [patent_app_type] => utility [patent_app_number] => 19/306314 [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] => 1185 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -4 [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] => 19306314 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/306314
PARTIALLY DEGRADABLE PARTICULATES AS TIME-RELEASED TRACERS FOR ACIDIZED AND FRACTURED GAS WELLS Aug 20, 2025 Pending
Array ( [id] => 20393414 [patent_doc_number] => 20250368889 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-12-04 [patent_title] => ADDITIVE TO REDUCE POLYMER SOLIDS DEPOSITION AT PUMP HEAD [patent_app_type] => utility [patent_app_number] => 19/295901 [patent_app_country] => US [patent_app_date] => 2025-08-11 [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] => 52 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19295901 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/295901
ADDITIVE TO REDUCE POLYMER SOLIDS DEPOSITION AT PUMP HEAD Aug 10, 2025 Pending
Array ( [id] => 20349709 [patent_doc_number] => 20250346561 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-11-13 [patent_title] => TRACERS FOR PETROLEUM RESERVOIRS [patent_app_type] => utility [patent_app_number] => 19/276804 [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] => 20637 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 12 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19276804 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/276804
TRACERS FOR PETROLEUM RESERVOIRS Jul 21, 2025 Pending
Array ( [id] => 20337017 [patent_doc_number] => 20250341137 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-11-06 [patent_title] => PROVIDING LOST CIRCULATION MATERIAL TO CURE FLUID LOSSES IN A WELL [patent_app_type] => utility [patent_app_number] => 19/272087 [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] => 1194 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 63 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19272087 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/272087
PROVIDING LOST CIRCULATION MATERIAL TO CURE FLUID LOSSES IN A WELL Jul 16, 2025 Pending
Array ( [id] => 20309764 [patent_doc_number] => 20250327393 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-23 [patent_title] => CONTROLLING FRACTURE GROWTH DURING STIMULATION OF SUBSURFACE RESERVOIRS USING OFFSET WELLS [patent_app_type] => utility [patent_app_number] => 19/252483 [patent_app_country] => US [patent_app_date] => 2025-06-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6033 [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] => 19252483 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/252483
CONTROLLING FRACTURE GROWTH DURING STIMULATION OF SUBSURFACE RESERVOIRS USING OFFSET WELLS Jun 26, 2025 Pending
Array ( [id] => 20233070 [patent_doc_number] => 20250290389 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-09-18 [patent_title] => ORGANIC ESTERS WITH ELECTRON WITHDRAWING GROUPS FOR USE IN SUBTERRANEAN FORMATIONS [patent_app_type] => utility [patent_app_number] => 19/223790 [patent_app_country] => US [patent_app_date] => 2025-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2113 [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] => 19223790 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/223790
ORGANIC ESTERS WITH ELECTRON WITHDRAWING GROUPS FOR USE IN SUBTERRANEAN FORMATIONS May 29, 2025 Pending
Array ( [id] => 20207706 [patent_doc_number] => 20250277426 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-09-04 [patent_title] => NON-REACTIVE COLLOID PARTICLES TO STOP GAS MIGRATION IN EXPANDABLE METAL APPLICATIONS [patent_app_type] => utility [patent_app_number] => 19/210415 [patent_app_country] => US [patent_app_date] => 2025-05-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3181 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -33 [patent_words_short_claim] => 40 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19210415 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/210415
NON-REACTIVE COLLOID PARTICLES TO STOP GAS MIGRATION IN EXPANDABLE METAL APPLICATIONS May 15, 2025 Pending
Array ( [id] => 20207704 [patent_doc_number] => 20250277424 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-09-04 [patent_title] => METHOD FOR PLACING NON-REACTIVE COLLOID PARTICLES TO STOP GAS MIGRATION IN EXPANDABLE METAL APPLICATIONS [patent_app_type] => utility [patent_app_number] => 19/210530 [patent_app_country] => US [patent_app_date] => 2025-05-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3181 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -27 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19210530 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/210530
METHOD FOR PLACING NON-REACTIVE COLLOID PARTICLES TO STOP GAS MIGRATION IN EXPANDABLE METAL APPLICATIONS May 15, 2025 Pending
Array ( [id] => 20834027 [patent_doc_number] => 20260193530 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-07-09 [patent_title] => COMPOSITION AND METH ODS FOR INHIBITING CORROSION OF METAL DURING ACIDIZING A WELLBORE IN A SUBTERRANEAN FORMATION FOR FRACKING [patent_app_type] => utility [patent_app_number] => 19/208667 [patent_app_country] => US [patent_app_date] => 2025-05-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5903 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [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] => 19208667 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/208667
COMPOSITION AND METH ODS FOR INHIBITING CORROSION OF METAL DURING ACIDIZING A WELLBORE IN A SUBTERRANEAN FORMATION FOR FRACKING May 14, 2025 Pending
Array ( [id] => 20165211 [patent_doc_number] => 20250257257 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-08-14 [patent_title] => METHOD OF IMPROVING INJECTION PRESSURE AND ASPHALTENE REMEDIATION [patent_app_type] => utility [patent_app_number] => 19/197054 [patent_app_country] => US [patent_app_date] => 2025-05-02 [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] => -19 [patent_words_short_claim] => 71 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19197054 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/197054
METHOD OF IMPROVING INJECTION PRESSURE AND ASPHALTENE REMEDIATION May 1, 2025 Pending
Array ( [id] => 20730361 [patent_doc_number] => 12637610 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-05-26 [patent_title] => Low concentration synthetic polymer fracturing fluid with ascorbic acid [patent_app_type] => utility [patent_app_number] => 19/196476 [patent_app_country] => US [patent_app_date] => 2025-05-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 0 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 98 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19196476 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/196476
Low concentration synthetic polymer fracturing fluid with ascorbic acid Apr 30, 2025 Issued
Array ( [id] => 20121750 [patent_doc_number] => 20250236781 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-24 [patent_title] => PROPPANT-FIBER SCHEDULE FOR FAR FIELD DIVERSION [patent_app_type] => utility [patent_app_number] => 19/171488 [patent_app_country] => US [patent_app_date] => 2025-04-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1321 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 78 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19171488 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/171488
PROPPANT-FIBER SCHEDULE FOR FAR FIELD DIVERSION Apr 6, 2025 Pending
Array ( [id] => 20279607 [patent_doc_number] => 20250304849 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-02 [patent_title] => MIXTURES FOR INHIBITING ASPHALTENE DEPOSITION [patent_app_type] => utility [patent_app_number] => 19/095426 [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] => 6804 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -21 [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] => 19095426 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/095426
MIXTURES FOR INHIBITING ASPHALTENE DEPOSITION Mar 30, 2025 Pending
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