Search

Duc T. Doan

Examiner (ID: 5104, Phone: (571)272-4171 , Office: P/2135 )

Most Active Art Unit
2185
Art Unit(s)
2135, 2185, 2188
Total Applications
730
Issued Applications
596
Pending Applications
8
Abandoned Applications
129

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19467633 [patent_doc_number] => 20240321303 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-26 [patent_title] => MAGNETIC TAPE APPARATUS [patent_app_type] => utility [patent_app_number] => 18/680013 [patent_app_country] => US [patent_app_date] => 2024-05-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 34759 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 484 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18680013 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/680013
Magnetic tape apparatus May 30, 2024 Issued
Array ( [id] => 20441278 [patent_doc_number] => 12512118 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-12-30 [patent_title] => Beam support for staggered modules of a tilted head in a storage system [patent_app_type] => utility [patent_app_number] => 18/660413 [patent_app_country] => US [patent_app_date] => 2024-05-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 21 [patent_no_of_words] => 12980 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 139 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18660413 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/660413
Beam support for staggered modules of a tilted head in a storage system May 9, 2024 Issued
Array ( [id] => 19951048 [patent_doc_number] => 12322418 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-06-03 [patent_title] => Vinyl record player automatic stop and lift tonearm structure [patent_app_type] => utility [patent_app_number] => 18/652966 [patent_app_country] => US [patent_app_date] => 2024-05-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 0 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 174 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18652966 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/652966
Vinyl record player automatic stop and lift tonearm structure May 1, 2024 Issued
Array ( [id] => 19435718 [patent_doc_number] => 20240304216 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-12 [patent_title] => OPTICAL DATA TRANSFER [patent_app_type] => utility [patent_app_number] => 18/636249 [patent_app_country] => US [patent_app_date] => 2024-04-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 14198 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 160 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18636249 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/636249
Optical data transfer Apr 14, 2024 Issued
Array ( [id] => 20482609 [patent_doc_number] => 12531085 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-01-20 [patent_title] => Disk device [patent_app_type] => utility [patent_app_number] => 18/625413 [patent_app_country] => US [patent_app_date] => 2024-04-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 12 [patent_no_of_words] => 2402 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18625413 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/625413
Disk device Apr 2, 2024 Issued
Array ( [id] => 19363911 [patent_doc_number] => 20240265945 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-08 [patent_title] => Reader Bias Based Locking Technique Enabling High Read Concurrency For Read-Mostly Workloads [patent_app_type] => utility [patent_app_number] => 18/617546 [patent_app_country] => US [patent_app_date] => 2024-03-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 16019 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 18617546 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/617546
Reader bias based locking technique enabling high read concurrency for read-mostly workloads Mar 25, 2024 Issued
Array ( [id] => 19912356 [patent_doc_number] => 12288574 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-04-29 [patent_title] => Identifying heat assisted recording laser stability using ramped temperature calibration [patent_app_type] => utility [patent_app_number] => 18/615310 [patent_app_country] => US [patent_app_date] => 2024-03-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 0 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 125 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18615310 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/615310
Identifying heat assisted recording laser stability using ramped temperature calibration Mar 24, 2024 Issued
Array ( [id] => 20441282 [patent_doc_number] => 12512122 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-12-30 [patent_title] => Data storage device with servo burst signal correction for mitigating effects of servo pattern distortion [patent_app_type] => utility [patent_app_number] => 18/612541 [patent_app_country] => US [patent_app_date] => 2024-03-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 11 [patent_no_of_words] => 3558 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 121 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18612541 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/612541
Data storage device with servo burst signal correction for mitigating effects of servo pattern distortion Mar 20, 2024 Issued
Array ( [id] => 19812150 [patent_doc_number] => 12243557 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-03-04 [patent_title] => Write signal interference cancellation across data/servo clock boundary [patent_app_type] => utility [patent_app_number] => 18/610540 [patent_app_country] => US [patent_app_date] => 2024-03-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 5813 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18610540 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/610540
Write signal interference cancellation across data/servo clock boundary Mar 19, 2024 Issued
Array ( [id] => 20132038 [patent_doc_number] => 12374355 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-07-29 [patent_title] => Multi-format data retrieval from legacy tapes [patent_app_type] => utility [patent_app_number] => 18/602205 [patent_app_country] => US [patent_app_date] => 2024-03-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 6408 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 184 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18602205 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/602205
Multi-format data retrieval from legacy tapes Mar 11, 2024 Issued
Array ( [id] => 19906283 [patent_doc_number] => 12283294 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-04-22 [patent_title] => Magnetic disk device [patent_app_type] => utility [patent_app_number] => 18/600867 [patent_app_country] => US [patent_app_date] => 2024-03-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 3265 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 107 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18600867 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/600867
Magnetic disk device Mar 10, 2024 Issued
Array ( [id] => 19467634 [patent_doc_number] => 20240321304 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-26 [patent_title] => MAGNETIC DISK DEVICE [patent_app_type] => utility [patent_app_number] => 18/600894 [patent_app_country] => US [patent_app_date] => 2024-03-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8215 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [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] => 18600894 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/600894
Magnetic disk device Mar 10, 2024 Issued
Array ( [id] => 19934840 [patent_doc_number] => 12308048 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-05-20 [patent_title] => Magnetic disk device [patent_app_type] => utility [patent_app_number] => 18/600876 [patent_app_country] => US [patent_app_date] => 2024-03-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 16 [patent_no_of_words] => 7397 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 314 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18600876 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/600876
Magnetic disk device Mar 10, 2024 Issued
Array ( [id] => 20161125 [patent_doc_number] => 12387758 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-08-12 [patent_title] => Method of operating hard disk drives, corresponding hard disk drive and processing device [patent_app_type] => utility [patent_app_number] => 18/597484 [patent_app_country] => US [patent_app_date] => 2024-03-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 10 [patent_no_of_words] => 3086 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18597484 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/597484
Method of operating hard disk drives, corresponding hard disk drive and processing device Mar 5, 2024 Issued
Array ( [id] => 19951052 [patent_doc_number] => 12322422 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-06-03 [patent_title] => Servo-write for magnetic disk media archival data storage system [patent_app_type] => utility [patent_app_number] => 18/596225 [patent_app_country] => US [patent_app_date] => 2024-03-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 13 [patent_no_of_words] => 2092 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 164 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18596225 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/596225
Servo-write for magnetic disk media archival data storage system Mar 4, 2024 Issued
Array ( [id] => 19626827 [patent_doc_number] => 12165674 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2024-12-10 [patent_title] => Write data management [patent_app_type] => utility [patent_app_number] => 18/594089 [patent_app_country] => US [patent_app_date] => 2024-03-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 15 [patent_no_of_words] => 22731 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 180 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18594089 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/594089
Write data management Mar 3, 2024 Issued
Array ( [id] => 19733530 [patent_doc_number] => 12211530 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-01-28 [patent_title] => Magnetic disk apparatus and method [patent_app_type] => utility [patent_app_number] => 18/442275 [patent_app_country] => US [patent_app_date] => 2024-02-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 11 [patent_no_of_words] => 8243 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 147 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18442275 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/442275
Magnetic disk apparatus and method Feb 14, 2024 Issued
Array ( [id] => 19392470 [patent_doc_number] => 20240282340 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-08-22 [patent_title] => MAGNETIC TAPE CARTRIDGE AND LABEL FOR MAGNETIC TAPE CARTRIDGE IDENTIFICATION [patent_app_type] => utility [patent_app_number] => 18/442024 [patent_app_country] => US [patent_app_date] => 2024-02-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12078 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 80 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18442024 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/442024
Magnetic tape cartridge and label for magnetic tape cartridge identification Feb 13, 2024 Issued
Array ( [id] => 19835448 [patent_doc_number] => 20250087234 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-13 [patent_title] => MAGNETIC DEVICE, MAGNETIC HEAD, AND MAGNETIC RECORDING DEVICE [patent_app_type] => utility [patent_app_number] => 18/440247 [patent_app_country] => US [patent_app_date] => 2024-02-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6009 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 18 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18440247 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/440247
Magnetic device, magnetic head, and magnetic recording device Feb 12, 2024 Issued
Array ( [id] => 19704692 [patent_doc_number] => 12198738 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2025-01-14 [patent_title] => Magnetic disk device [patent_app_type] => utility [patent_app_number] => 18/440606 [patent_app_country] => US [patent_app_date] => 2024-02-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 16 [patent_no_of_words] => 7134 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 128 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18440606 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/440606
Magnetic disk device Feb 12, 2024 Issued
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