Search

Changhyun Yi

Examiner (ID: 13867, Phone: (571)270-7799 , Office: P/2826 )

Most Active Art Unit
2826
Art Unit(s)
2812, 2826
Total Applications
1276
Issued Applications
1125
Pending Applications
122
Abandoned Applications
68

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 6643088 [patent_doc_number] => 20030007271 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-01-09 [patent_title] => 'Amplifier with a strong output current' [patent_app_type] => new [patent_app_number] => 10/179356 [patent_app_country] => US [patent_app_date] => 2002-06-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2079 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 125 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0007/20030007271.pdf [firstpage_image] =>[orig_patent_app_number] => 10179356 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/179356
Amplifier with a strong output current Jun 24, 2002 Issued
Array ( [id] => 964711 [patent_doc_number] => 06950252 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-09-27 [patent_title] => 'Master carrier for magnetic transfer' [patent_app_type] => utility [patent_app_number] => 10/178550 [patent_app_country] => US [patent_app_date] => 2002-06-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 6 [patent_no_of_words] => 7057 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/950/06950252.pdf [firstpage_image] =>[orig_patent_app_number] => 10178550 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/178550
Master carrier for magnetic transfer Jun 24, 2002 Issued
Array ( [id] => 768322 [patent_doc_number] => 07009790 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-03-07 [patent_title] => 'Magnetic transfer apparatus' [patent_app_type] => utility [patent_app_number] => 10/176115 [patent_app_country] => US [patent_app_date] => 2002-06-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 11 [patent_no_of_words] => 13880 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 69 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/009/07009790.pdf [firstpage_image] =>[orig_patent_app_number] => 10176115 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/176115
Magnetic transfer apparatus Jun 20, 2002 Issued
Array ( [id] => 754034 [patent_doc_number] => 07023632 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2006-04-04 [patent_title] => 'Monitoring of phenomena indicative of PTP in a hard disk and controlling the burnishing of heads' [patent_app_type] => utility [patent_app_number] => 10/173561 [patent_app_country] => US [patent_app_date] => 2002-06-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 4717 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 181 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/023/07023632.pdf [firstpage_image] =>[orig_patent_app_number] => 10173561 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/173561
Monitoring of phenomena indicative of PTP in a hard disk and controlling the burnishing of heads Jun 17, 2002 Issued
Array ( [id] => 6804025 [patent_doc_number] => 20030231419 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-12-18 [patent_title] => 'Differential magneto-resistive head pre-amplifiers for single polarity power supply applications' [patent_app_type] => new [patent_app_number] => 10/172368 [patent_app_country] => US [patent_app_date] => 2002-06-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 4110 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 114 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0231/20030231419.pdf [firstpage_image] =>[orig_patent_app_number] => 10172368 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/172368
Differential magneto-resistive head pre-amplifiers for single polarity power supply applications Jun 13, 2002 Issued
Array ( [id] => 1007029 [patent_doc_number] => 06906877 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-06-14 [patent_title] => 'Magnetic transfer method for a high-density magnetic recording medium' [patent_app_type] => utility [patent_app_number] => 10/163357 [patent_app_country] => US [patent_app_date] => 2002-06-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 3143 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 187 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/906/06906877.pdf [firstpage_image] =>[orig_patent_app_number] => 10163357 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/163357
Magnetic transfer method for a high-density magnetic recording medium Jun 6, 2002 Issued
Array ( [id] => 718554 [patent_doc_number] => 07054082 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-05-30 [patent_title] => 'Magnetic transfer method for a high-density magnetic recording medium' [patent_app_type] => utility [patent_app_number] => 10/163370 [patent_app_country] => US [patent_app_date] => 2002-06-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 9 [patent_no_of_words] => 4016 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 269 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/054/07054082.pdf [firstpage_image] =>[orig_patent_app_number] => 10163370 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/163370
Magnetic transfer method for a high-density magnetic recording medium Jun 6, 2002 Issued
Array ( [id] => 6677563 [patent_doc_number] => 20030227703 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-12-11 [patent_title] => 'Hard disk drive with application-specific components' [patent_app_type] => new [patent_app_number] => 10/164719 [patent_app_country] => US [patent_app_date] => 2002-06-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 2296 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 61 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0227/20030227703.pdf [firstpage_image] =>[orig_patent_app_number] => 10164719 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/164719
Hard disk drive with application-specific components Jun 5, 2002 Abandoned
Array ( [id] => 942060 [patent_doc_number] => 06970314 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-11-29 [patent_title] => 'Multiple section read/write head for high track density, flexible media storage applications' [patent_app_type] => utility [patent_app_number] => 10/163988 [patent_app_country] => US [patent_app_date] => 2002-06-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 12 [patent_no_of_words] => 3122 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 83 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/970/06970314.pdf [firstpage_image] =>[orig_patent_app_number] => 10163988 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/163988
Multiple section read/write head for high track density, flexible media storage applications Jun 4, 2002 Issued
Array ( [id] => 723083 [patent_doc_number] => 07050252 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2006-05-23 [patent_title] => 'Disk drive employing off-line sector verification and relocation of marginal sectors discovered during read error recovery procedure' [patent_app_type] => utility [patent_app_number] => 10/160955 [patent_app_country] => US [patent_app_date] => 2002-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 2668 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 217 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/050/07050252.pdf [firstpage_image] =>[orig_patent_app_number] => 10160955 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/160955
Disk drive employing off-line sector verification and relocation of marginal sectors discovered during read error recovery procedure May 31, 2002 Issued
Array ( [id] => 536781 [patent_doc_number] => 07184230 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2007-02-27 [patent_title] => 'System and method for processing track identifier errors to mitigate head instability in data storage devices' [patent_app_type] => utility [patent_app_number] => 10/160954 [patent_app_country] => US [patent_app_date] => 2002-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 4014 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 172 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/184/07184230.pdf [firstpage_image] =>[orig_patent_app_number] => 10160954 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/160954
System and method for processing track identifier errors to mitigate head instability in data storage devices May 31, 2002 Issued
Array ( [id] => 1173522 [patent_doc_number] => 06757122 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2004-06-29 [patent_title] => 'Method and decoding apparatus using linear code with parity check matrices composed from circulants' [patent_app_type] => B1 [patent_app_number] => 10/160699 [patent_app_country] => US [patent_app_date] => 2002-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 15 [patent_no_of_words] => 9275 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/757/06757122.pdf [firstpage_image] =>[orig_patent_app_number] => 10160699 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/160699
Method and decoding apparatus using linear code with parity check matrices composed from circulants May 29, 2002 Issued
Array ( [id] => 6855132 [patent_doc_number] => 20030128633 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-07-10 [patent_title] => 'Heat assisted magnetic recording head with hybrid write pole' [patent_app_type] => new [patent_app_number] => 10/157219 [patent_app_country] => US [patent_app_date] => 2002-05-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 4049 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 72 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0128/20030128633.pdf [firstpage_image] =>[orig_patent_app_number] => 10157219 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/157219
Heat assisted magnetic recording head with hybrid write pole May 28, 2002 Abandoned
Array ( [id] => 6434652 [patent_doc_number] => 20020176192 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-11-28 [patent_title] => 'Apparatus and method of removing resonance frequency in system' [patent_app_type] => new [patent_app_number] => 10/155023 [patent_app_country] => US [patent_app_date] => 2002-05-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 3814 [patent_no_of_claims] => 32 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 55 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0176/20020176192.pdf [firstpage_image] =>[orig_patent_app_number] => 10155023 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/155023
Apparatus and method of removing resonance frequency in system May 27, 2002 Issued
Array ( [id] => 682350 [patent_doc_number] => 07085088 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-08-01 [patent_title] => 'Method of controlling reader amplifier gain variations of a HDD preamplifier, or the like' [patent_app_type] => utility [patent_app_number] => 10/154679 [patent_app_country] => US [patent_app_date] => 2002-05-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3241 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 82 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/085/07085088.pdf [firstpage_image] =>[orig_patent_app_number] => 10154679 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/154679
Method of controlling reader amplifier gain variations of a HDD preamplifier, or the like May 22, 2002 Issued
Array ( [id] => 682350 [patent_doc_number] => 07085088 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-08-01 [patent_title] => 'Method of controlling reader amplifier gain variations of a HDD preamplifier, or the like' [patent_app_type] => utility [patent_app_number] => 10/154679 [patent_app_country] => US [patent_app_date] => 2002-05-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3241 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 82 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/085/07085088.pdf [firstpage_image] =>[orig_patent_app_number] => 10154679 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/154679
Method of controlling reader amplifier gain variations of a HDD preamplifier, or the like May 22, 2002 Issued
Array ( [id] => 6719548 [patent_doc_number] => 20030053236 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-03-20 [patent_title] => 'System for combining automatic gain control values in a disc drive to perform drive performance operations' [patent_app_type] => new [patent_app_number] => 10/153103 [patent_app_country] => US [patent_app_date] => 2002-05-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 4425 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 22 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0053/20030053236.pdf [firstpage_image] =>[orig_patent_app_number] => 10153103 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/153103
System for combining automatic gain control values in a disc drive to perform drive performance operations May 21, 2002 Abandoned
Array ( [id] => 1007027 [patent_doc_number] => 06906876 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-06-14 [patent_title] => 'Magnetic transfer method and apparatus' [patent_app_type] => utility [patent_app_number] => 10/147976 [patent_app_country] => US [patent_app_date] => 2002-05-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 8 [patent_no_of_words] => 7231 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 230 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/906/06906876.pdf [firstpage_image] =>[orig_patent_app_number] => 10147976 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/147976
Magnetic transfer method and apparatus May 19, 2002 Issued
Array ( [id] => 6754417 [patent_doc_number] => 20030002193 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-01-02 [patent_title] => 'Method of providing a programmable voltage bias during multi channel servo mode' [patent_app_type] => new [patent_app_number] => 10/150662 [patent_app_country] => US [patent_app_date] => 2002-05-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3013 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0002/20030002193.pdf [firstpage_image] =>[orig_patent_app_number] => 10150662 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/150662
Method of providing a programmable voltage bias during multi channel servo mode May 16, 2002 Abandoned
Array ( [id] => 6768807 [patent_doc_number] => 20030214747 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-11-20 [patent_title] => 'Servo writing method for hard disk drives' [patent_app_type] => new [patent_app_number] => 10/146213 [patent_app_country] => US [patent_app_date] => 2002-05-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 1637 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 65 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0214/20030214747.pdf [firstpage_image] =>[orig_patent_app_number] => 10146213 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/146213
Servo writing method for hard disk drives May 13, 2002 Abandoned
Menu