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] => 20093293 [patent_doc_number] => 20250223229 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-10 [patent_title] => CEMENTITIOUS HEMATITE-BASED GEOPOLYMER COMPOSITION [patent_app_type] => utility [patent_app_number] => 19/074915 [patent_app_country] => US [patent_app_date] => 2025-03-10 [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] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19074915 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/074915
CEMENTITIOUS HEMATITE-BASED GEOPOLYMER COMPOSITION Mar 9, 2025 Pending
Array ( [id] => 20121747 [patent_doc_number] => 20250236778 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-24 [patent_title] => CLAY SWELLING INHIBITION USING ACRYLIC ACID FUNCTIONALIZED CELLULOSE DIACRYLATE CARBON NANOCOMPOSITE [patent_app_type] => utility [patent_app_number] => 19/047523 [patent_app_country] => US [patent_app_date] => 2025-02-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4476 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19047523 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/047523
Clay swelling inhibition using acrylic acid functionalized cellulose diacrylate carbon nanocomposite Feb 5, 2025 Issued
Array ( [id] => 20041126 [patent_doc_number] => 20250179348 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-05 [patent_title] => SURFACE TREATMENT COMPOSITIONS USED FOR CARBON SEQUESTRATION, HYDRAULIC FRACTURING AND INCREASING OIL PRODUCTION FROM A SUBTERRANEAN FORMATION, AND METHOD OF HYDRAULIC FRACTURING [patent_app_type] => utility [patent_app_number] => 19/043978 [patent_app_country] => US [patent_app_date] => 2025-02-03 [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] => -18 [patent_words_short_claim] => 109 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19043978 [rel_patent_id] =>[rel_patent_doc_number] =>)
19/043978
SURFACE TREATMENT COMPOSITIONS USED FOR CARBON SEQUESTRATION, HYDRAULIC FRACTURING AND INCREASING OIL PRODUCTION FROM A SUBTERRANEAN FORMATION, AND METHOD OF HYDRAULIC FRACTURING Feb 2, 2025 Pending
Array ( [id] => 20085372 [patent_doc_number] => 20250215308 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-07-03 [patent_title] => TREATMENT FLUIDS HAVING OIL-SOLUBLE DRAG REDUCING AGENTS FOR WELLBORE OPERATIONS [patent_app_type] => utility [patent_app_number] => 18/986827 [patent_app_country] => US [patent_app_date] => 2024-12-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1434 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 102 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18986827 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/986827
TREATMENT FLUIDS HAVING OIL-SOLUBLE DRAG REDUCING AGENTS FOR WELLBORE OPERATIONS Dec 18, 2024 Pending
Array ( [id] => 20050115 [patent_doc_number] => 20250188337 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-06-12 [patent_title] => SELF-DEGRADING ORGANOGELS [patent_app_type] => utility [patent_app_number] => 18/984195 [patent_app_country] => US [patent_app_date] => 2024-12-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4435 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -42 [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] => 18984195 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/984195
SELF-DEGRADING ORGANOGELS Dec 16, 2024 Pending
Array ( [id] => 19786192 [patent_doc_number] => 20250059871 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-20 [patent_title] => APPARATUS AND PROCESS FOR FRACTURE CONDUCTIVITY TUNING [patent_app_type] => utility [patent_app_number] => 18/938602 [patent_app_country] => US [patent_app_date] => 2024-11-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13773 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [patent_words_short_claim] => 47 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18938602 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/938602
APPARATUS AND PROCESS FOR FRACTURE CONDUCTIVITY TUNING Nov 5, 2024 Pending
Array ( [id] => 20678301 [patent_doc_number] => 20260117113 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2026-04-30 [patent_title] => SURFACTANT AS RELATIVE PERMEABILITY MODIFIER FOR PRODUCED FLUIDS FROM A SUBTERRANEAN FORMATION [patent_app_type] => utility [patent_app_number] => 18/931238 [patent_app_country] => US [patent_app_date] => 2024-10-30 [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] => -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] => 18931238 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/931238
Surfactant as relative permeability modifier for produced fluids from a subterranean formation Oct 29, 2024 Issued
Array ( [id] => 19755091 [patent_doc_number] => 20250043656 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-06 [patent_title] => METHOD FOR IMPROVING OIL AND GAS WELL PRODUCTIVITY AND ENCAPSULATED LUBRICATING FRAC FLUID ADDITIVE BY LUBRICATION OF STIMULATED RESERVOIR VOLUME [patent_app_type] => utility [patent_app_number] => 18/924513 [patent_app_country] => US [patent_app_date] => 2024-10-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4004 [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] => 18924513 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/924513
METHOD FOR IMPROVING OIL AND GAS WELL PRODUCTIVITY AND ENCAPSULATED LUBRICATING FRAC FLUID ADDITIVE BY LUBRICATION OF STIMULATED RESERVOIR VOLUME Oct 22, 2024 Pending
Array ( [id] => 19770209 [patent_doc_number] => 20250051635 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-13 [patent_title] => FRICTION REDUCTION OF ACIDIC TREATMENT FLUIDS [patent_app_type] => utility [patent_app_number] => 18/923929 [patent_app_country] => US [patent_app_date] => 2024-10-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11124 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 68 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18923929 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/923929
Friction reduction of acidic treatment fluids Oct 22, 2024 Issued
Array ( [id] => 20288503 [patent_doc_number] => 20250313746 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-10-09 [patent_title] => POLYMER SYSTEMS FOR SUBTERRANEAN ENERGY STORAGE [patent_app_type] => utility [patent_app_number] => 18/923878 [patent_app_country] => US [patent_app_date] => 2024-10-23 [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] => -18 [patent_words_short_claim] => 38 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18923878 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/923878
POLYMER SYSTEMS FOR SUBTERRANEAN ENERGY STORAGE Oct 22, 2024 Pending
Array ( [id] => 19755106 [patent_doc_number] => 20250043671 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-06 [patent_title] => Method for Generating Self-Propped Hydraulic Fractures [patent_app_type] => utility [patent_app_number] => 18/923257 [patent_app_country] => US [patent_app_date] => 2024-10-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2357 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -23 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18923257 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/923257
Method for Generating Self-Propped Hydraulic Fractures Oct 21, 2024 Pending
Array ( [id] => 19991063 [patent_doc_number] => 20250129285 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-04-24 [patent_title] => NYLON 66 AS A HIGH TEMPERATURE DIVERTER MATERIAL [patent_app_type] => utility [patent_app_number] => 18/919646 [patent_app_country] => US [patent_app_date] => 2024-10-18 [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] => 75 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18919646 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/919646
NYLON 66 AS A HIGH TEMPERATURE DIVERTER MATERIAL Oct 17, 2024 Abandoned
Array ( [id] => 19984558 [patent_doc_number] => 20250122780 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-04-17 [patent_title] => SYSTEMS AND METHODS FOR SEQUESTERING ALKALINE CARBONATES WITH CAPTURED CO2 [patent_app_type] => utility [patent_app_number] => 18/919246 [patent_app_country] => US [patent_app_date] => 2024-10-17 [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] => -18 [patent_words_short_claim] => 106 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18919246 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/919246
SYSTEMS AND METHODS FOR SEQUESTERING ALKALINE CARBONATES WITH CAPTURED CO2 Oct 16, 2024 Pending
Array ( [id] => 19998266 [patent_doc_number] => 20250136488 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-05-01 [patent_title] => Extended- and Multimodal-Release Compositions [patent_app_type] => utility [patent_app_number] => 18/909730 [patent_app_country] => US [patent_app_date] => 2024-10-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2582 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [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] => 18909730 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/909730
Extended- and Multimodal-Release Compositions Oct 7, 2024 Pending
Array ( [id] => 20665333 [patent_doc_number] => 12607095 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-04-21 [patent_title] => Dissolution of titanium-iron oxides and iron oxides in a wellbore [patent_app_type] => utility [patent_app_number] => 18/888384 [patent_app_country] => US [patent_app_date] => 2024-09-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 1243 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 97 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18888384 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/888384
Dissolution of titanium-iron oxides and iron oxides in a wellbore Sep 17, 2024 Issued
Array ( [id] => 20343270 [patent_doc_number] => 12466993 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-11-11 [patent_title] => Ceramic tracing proppant [patent_app_type] => utility [patent_app_number] => 18/824816 [patent_app_country] => US [patent_app_date] => 2024-09-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 0 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 57 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18824816 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/824816
Ceramic tracing proppant Sep 3, 2024 Issued
Array ( [id] => 19800736 [patent_doc_number] => 20250066661 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-27 [patent_title] => INVERTING PACKAGES, EMULSIONS, AND METHODS [patent_app_type] => utility [patent_app_number] => 18/804760 [patent_app_country] => US [patent_app_date] => 2024-08-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9636 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 148 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18804760 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/804760
INVERTING PACKAGES, EMULSIONS, AND METHODS Aug 13, 2024 Pending
Array ( [id] => 19786175 [patent_doc_number] => 20250059854 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-20 [patent_title] => ENCAPSULATED INTERNAL FILTER CAKE BREAKER [patent_app_type] => utility [patent_app_number] => 18/802206 [patent_app_country] => US [patent_app_date] => 2024-08-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4768 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 66 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18802206 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/802206
Encapsulated internal filter cake breaker Aug 12, 2024 Issued
Array ( [id] => 19615201 [patent_doc_number] => 20240400881 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-12-05 [patent_title] => WEIGHTED DRILLING FLUID COMPOSITION [patent_app_type] => utility [patent_app_number] => 18/800227 [patent_app_country] => US [patent_app_date] => 2024-08-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10429 [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] => 18800227 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/800227
Weighted drilling fluid composition Aug 11, 2024 Issued
Array ( [id] => 19651452 [patent_doc_number] => 12173223 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-12-24 [patent_title] => Process for removing hydrogen sulfide from a gas composition [patent_app_type] => utility [patent_app_number] => 18/800260 [patent_app_country] => US [patent_app_date] => 2024-08-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 17 [patent_no_of_words] => 10548 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 221 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18800260 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/800260
Process for removing hydrogen sulfide from a gas composition Aug 11, 2024 Issued
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