Search

Un C. Cho

Supervisory Patent Examiner (ID: 2269, Phone: (571)272-7919 , Office: P/2413 )

Most Active Art Unit
2617
Art Unit(s)
4115, 2687, 2682, 2413, 4133, 2617
Total Applications
395
Issued Applications
240
Pending Applications
26
Abandoned Applications
133

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 17803047 [patent_doc_number] => 11417356 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-08-16 [patent_title] => Write assist stack to reduce resistance and improve reliability [patent_app_type] => utility [patent_app_number] => 16/917487 [patent_app_country] => US [patent_app_date] => 2020-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 13 [patent_no_of_words] => 10398 [patent_no_of_claims] => 26 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 72 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16917487 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/917487
Write assist stack to reduce resistance and improve reliability Jun 29, 2020 Issued
Array ( [id] => 17516610 [patent_doc_number] => 11295769 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-04-05 [patent_title] => Soft mount voice coil motor assembly [patent_app_type] => utility [patent_app_number] => 16/915698 [patent_app_country] => US [patent_app_date] => 2020-06-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 11 [patent_no_of_words] => 7385 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 95 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16915698 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/915698
Soft mount voice coil motor assembly Jun 28, 2020 Issued
Array ( [id] => 17018140 [patent_doc_number] => 11087785 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-08-10 [patent_title] => Effective rear hard bias for dual free layer read heads [patent_app_type] => utility [patent_app_number] => 16/915718 [patent_app_country] => US [patent_app_date] => 2020-06-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 16 [patent_no_of_words] => 8708 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 79 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16915718 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/915718
Effective rear hard bias for dual free layer read heads Jun 28, 2020 Issued
Array ( [id] => 16773711 [patent_doc_number] => 10984828 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-04-20 [patent_title] => Sliders with low aspect ratio [patent_app_type] => utility [patent_app_number] => 16/946539 [patent_app_country] => US [patent_app_date] => 2020-06-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 13 [patent_no_of_words] => 8182 [patent_no_of_claims] => 30 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 78 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16946539 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/946539
Sliders with low aspect ratio Jun 25, 2020 Issued
Array ( [id] => 17424053 [patent_doc_number] => 11257514 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-02-22 [patent_title] => Magnetic recording devices having negative polarization layer to enhance spin-transfer torque [patent_app_type] => utility [patent_app_number] => 16/912509 [patent_app_country] => US [patent_app_date] => 2020-06-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 7097 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 81 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16912509 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/912509
Magnetic recording devices having negative polarization layer to enhance spin-transfer torque Jun 24, 2020 Issued
Array ( [id] => 17516612 [patent_doc_number] => 11295771 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-04-05 [patent_title] => Head positioning assembly for tape embedded drive [patent_app_type] => utility [patent_app_number] => 16/905781 [patent_app_country] => US [patent_app_date] => 2020-06-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 6076 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 138 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16905781 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/905781
Head positioning assembly for tape embedded drive Jun 17, 2020 Issued
Array ( [id] => 17018137 [patent_doc_number] => 11087782 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-08-10 [patent_title] => Shielding between heads for tape drive [patent_app_type] => utility [patent_app_number] => 16/903253 [patent_app_country] => US [patent_app_date] => 2020-06-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 14 [patent_no_of_words] => 7146 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 115 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16903253 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/903253
Shielding between heads for tape drive Jun 15, 2020 Issued
Array ( [id] => 17270131 [patent_doc_number] => 11195559 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-12-07 [patent_title] => Slider test socket with clamp, and related assemblies and methods of use [patent_app_type] => utility [patent_app_number] => 16/895680 [patent_app_country] => US [patent_app_date] => 2020-06-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 16 [patent_no_of_words] => 5867 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 163 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16895680 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/895680
Slider test socket with clamp, and related assemblies and methods of use Jun 7, 2020 Issued
Array ( [id] => 16911185 [patent_doc_number] => 11043233 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-06-22 [patent_title] => Magnetic write head with dual return pole and tapered main pole [patent_app_type] => utility [patent_app_number] => 16/946034 [patent_app_country] => US [patent_app_date] => 2020-06-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 20 [patent_figures_cnt] => 22 [patent_no_of_words] => 9456 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 179 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16946034 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/946034
Magnetic write head with dual return pole and tapered main pole Jun 2, 2020 Issued
Array ( [id] => 16759547 [patent_doc_number] => 10978102 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-04-13 [patent_title] => Thermally assisted magnetic head, head gimbal assembly and hard disk drive [patent_app_type] => utility [patent_app_number] => 16/885328 [patent_app_country] => US [patent_app_date] => 2020-05-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 24 [patent_figures_cnt] => 24 [patent_no_of_words] => 7003 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 154 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16885328 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/885328
Thermally assisted magnetic head, head gimbal assembly and hard disk drive May 27, 2020 Issued
Array ( [id] => 17032530 [patent_doc_number] => 11094347 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-08-17 [patent_title] => Split ramp for data storage devices [patent_app_type] => utility [patent_app_number] => 16/863287 [patent_app_country] => US [patent_app_date] => 2020-04-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 11 [patent_no_of_words] => 4200 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 136 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16863287 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/863287
Split ramp for data storage devices Apr 29, 2020 Issued
Array ( [id] => 16943889 [patent_doc_number] => 11056137 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-07-06 [patent_title] => Load beam side rail shock contact feature [patent_app_type] => utility [patent_app_number] => 16/861207 [patent_app_country] => US [patent_app_date] => 2020-04-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 14 [patent_no_of_words] => 6590 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 116 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16861207 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/861207
Load beam side rail shock contact feature Apr 27, 2020 Issued
Array ( [id] => 16834933 [patent_doc_number] => 11011190 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-05-18 [patent_title] => Magnetic write head with write-field enhancement structure including a magnetic notch [patent_app_type] => utility [patent_app_number] => 16/857423 [patent_app_country] => US [patent_app_date] => 2020-04-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 18 [patent_figures_cnt] => 30 [patent_no_of_words] => 16580 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 3 [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] => 16857423 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/857423
Magnetic write head with write-field enhancement structure including a magnetic notch Apr 23, 2020 Issued
Array ( [id] => 17002310 [patent_doc_number] => 11081132 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-08-03 [patent_title] => Tape embedded drive with HDD components [patent_app_type] => utility [patent_app_number] => 16/858265 [patent_app_country] => US [patent_app_date] => 2020-04-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 7331 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 145 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16858265 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/858265
Tape embedded drive with HDD components Apr 23, 2020 Issued
Array ( [id] => 17173802 [patent_doc_number] => 20210327473 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-10-21 [patent_title] => TOP COVER SPRING DESIGNS [patent_app_type] => utility [patent_app_number] => 16/852904 [patent_app_country] => US [patent_app_date] => 2020-04-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2966 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 16852904 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/852904
Top cover spring designs Apr 19, 2020 Issued
Array ( [id] => 16699654 [patent_doc_number] => 10950260 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-03-16 [patent_title] => Magnetoresistive sensor with improved magnetic properties and magnetostriction control [patent_app_type] => utility [patent_app_number] => 16/851568 [patent_app_country] => US [patent_app_date] => 2020-04-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 6467 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 113 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16851568 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/851568
Magnetoresistive sensor with improved magnetic properties and magnetostriction control Apr 16, 2020 Issued
Array ( [id] => 16958857 [patent_doc_number] => 11062734 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-07-13 [patent_title] => Multi-spindle and multi-actuator data storage devices [patent_app_type] => utility [patent_app_number] => 16/838891 [patent_app_country] => US [patent_app_date] => 2020-04-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3226 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 28 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16838891 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/838891
Multi-spindle and multi-actuator data storage devices Apr 1, 2020 Issued
Array ( [id] => 16180107 [patent_doc_number] => 20200227076 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-07-16 [patent_title] => MICROWAVE-ASSISTED MAGNETIC RECORDING (MAMR) WRITE HEAD WITH COMPENSATION FOR DC SHUNTING FIELD [patent_app_type] => utility [patent_app_number] => 16/835198 [patent_app_country] => US [patent_app_date] => 2020-03-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4920 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [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] => 16835198 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/835198
Microwave-assisted magnetic recording (MAMR) write head with compensation for DC shunting field Mar 29, 2020 Issued
Array ( [id] => 17500410 [patent_doc_number] => 11289119 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2022-03-29 [patent_title] => Notched leading-edge shield for assisted magnetic recording head [patent_app_type] => utility [patent_app_number] => 16/828030 [patent_app_country] => US [patent_app_date] => 2020-03-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 11 [patent_no_of_words] => 2547 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 152 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16828030 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/828030
Notched leading-edge shield for assisted magnetic recording head Mar 23, 2020 Issued
Array ( [id] => 17018136 [patent_doc_number] => 11087781 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-08-10 [patent_title] => Magnetic head including plural magnetic layers and plural intermediate layers and magnetic recording device [patent_app_type] => utility [patent_app_number] => 16/820917 [patent_app_country] => US [patent_app_date] => 2020-03-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 20 [patent_no_of_words] => 8129 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 238 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16820917 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/820917
Magnetic head including plural magnetic layers and plural intermediate layers and magnetic recording device Mar 16, 2020 Issued
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