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] => 761611 [patent_doc_number] => 07016130 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-03-21 [patent_title] => 'Method for recording and reproducing audio and video data in disk drive, and a readable medium therefor' [patent_app_type] => utility [patent_app_number] => 10/405037 [patent_app_country] => US [patent_app_date] => 2003-04-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2089 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/016/07016130.pdf [firstpage_image] =>[orig_patent_app_number] => 10405037 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/405037
Method for recording and reproducing audio and video data in disk drive, and a readable medium therefor Apr 1, 2003 Issued
Array ( [id] => 7450331 [patent_doc_number] => 20040196584 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-10-07 [patent_title] => 'System and method for reducing circumferential transition incoherence in servowriting operations and magnetic disk drive incorporating the same' [patent_app_type] => new [patent_app_number] => 10/404828 [patent_app_country] => US [patent_app_date] => 2003-04-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 4748 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 63 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0196/20040196584.pdf [firstpage_image] =>[orig_patent_app_number] => 10404828 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/404828
System and method for reducing circumferential transition incoherence in servowriting operations and magnetic disk drive incorporating the same Mar 31, 2003 Issued
Array ( [id] => 6850231 [patent_doc_number] => 20030142433 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-07-31 [patent_title] => 'Magnetic recording apparatus' [patent_app_type] => new [patent_app_number] => 10/395250 [patent_app_country] => US [patent_app_date] => 2003-03-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 4947 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 79 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0142/20030142433.pdf [firstpage_image] =>[orig_patent_app_number] => 10395250 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/395250
Magnetic recording apparatus Mar 24, 2003 Issued
Array ( [id] => 7379419 [patent_doc_number] => 20040179291 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-09-16 [patent_title] => 'Constrained implementation of variable data TPI' [patent_app_type] => new [patent_app_number] => 10/387781 [patent_app_country] => US [patent_app_date] => 2003-03-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 5410 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 108 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0179/20040179291.pdf [firstpage_image] =>[orig_patent_app_number] => 10387781 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/387781
Constrained implementation of variable data TPI Mar 12, 2003 Issued
Array ( [id] => 7379424 [patent_doc_number] => 20040179292 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-09-16 [patent_title] => 'Method for constrained implementation of variable data TPI' [patent_app_type] => new [patent_app_number] => 10/387789 [patent_app_country] => US [patent_app_date] => 2003-03-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 5405 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 114 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0179/20040179292.pdf [firstpage_image] =>[orig_patent_app_number] => 10387789 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/387789
Method for constrained implementation of variable data TPI Mar 12, 2003 Issued
Array ( [id] => 6700407 [patent_doc_number] => 20030223287 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-12-04 [patent_title] => 'Virtual Vbias circuit' [patent_app_type] => new [patent_app_number] => 10/355916 [patent_app_country] => US [patent_app_date] => 2003-01-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 3156 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 70 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0223/20030223287.pdf [firstpage_image] =>[orig_patent_app_number] => 10355916 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/355916
Virtual Vbias circuit Jan 30, 2003 Abandoned
Array ( [id] => 7263291 [patent_doc_number] => 20040150903 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-08-05 [patent_title] => 'Adaptive track count determination for a self-servowritten disk drive' [patent_app_type] => new [patent_app_number] => 10/355474 [patent_app_country] => US [patent_app_date] => 2003-01-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 3978 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 75 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0150/20040150903.pdf [firstpage_image] =>[orig_patent_app_number] => 10355474 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/355474
Adaptive track count determination for a self-servowritten disk drive Jan 30, 2003 Issued
Array ( [id] => 6850225 [patent_doc_number] => 20030142427 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-07-31 [patent_title] => 'Master information magnetic recording apparatus and method for manufacturing magnetic recording medium in which information is recorded by using this' [patent_app_type] => new [patent_app_number] => 10/355860 [patent_app_country] => US [patent_app_date] => 2003-01-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 23 [patent_figures_cnt] => 23 [patent_no_of_words] => 12144 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 55 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0142/20030142427.pdf [firstpage_image] =>[orig_patent_app_number] => 10355860 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/355860
Master information magnetic recording apparatus and method for manufacturing magnetic recording medium in which information is recorded by using this Jan 29, 2003 Issued
Array ( [id] => 7385291 [patent_doc_number] => 20040036994 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-02-26 [patent_title] => 'Slider tester' [patent_app_type] => new [patent_app_number] => 10/348680 [patent_app_country] => US [patent_app_date] => 2003-01-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 5354 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 35 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0036/20040036994.pdf [firstpage_image] =>[orig_patent_app_number] => 10348680 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/348680
Slider tester Jan 20, 2003 Issued
Array ( [id] => 1026413 [patent_doc_number] => 06885513 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2005-04-26 [patent_title] => 'Magnetic printing system for thin recording media' [patent_app_type] => utility [patent_app_number] => 10/328432 [patent_app_country] => US [patent_app_date] => 2002-12-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 13 [patent_no_of_words] => 4646 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 200 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/885/06885513.pdf [firstpage_image] =>[orig_patent_app_number] => 10328432 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/328432
Magnetic printing system for thin recording media Dec 23, 2002 Issued
Array ( [id] => 7162576 [patent_doc_number] => 20040075927 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-04-22 [patent_title] => 'Flux closed single pole perpendicular head for ultra narrow track' [patent_app_type] => new [patent_app_number] => 10/273603 [patent_app_country] => US [patent_app_date] => 2002-10-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 3318 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 68 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0075/20040075927.pdf [firstpage_image] =>[orig_patent_app_number] => 10273603 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/273603
Flux closed single pole perpendicular head for ultra narrow track Oct 16, 2002 Issued
Array ( [id] => 494087 [patent_doc_number] => 07215494 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2007-05-08 [patent_title] => 'System and method for performing adaptive read retry operations in a data storage device' [patent_app_type] => utility [patent_app_number] => 10/263322 [patent_app_country] => US [patent_app_date] => 2002-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 11947 [patent_no_of_claims] => 31 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 63 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/215/07215494.pdf [firstpage_image] =>[orig_patent_app_number] => 10263322 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/263322
System and method for performing adaptive read retry operations in a data storage device Sep 30, 2002 Issued
Array ( [id] => 758430 [patent_doc_number] => 07019930 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2006-03-28 [patent_title] => 'Digital filtering and digital automatic gain control for a variable speed read channel' [patent_app_type] => utility [patent_app_number] => 10/244294 [patent_app_country] => US [patent_app_date] => 2002-09-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2673 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 213 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/019/07019930.pdf [firstpage_image] =>[orig_patent_app_number] => 10244294 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/244294
Digital filtering and digital automatic gain control for a variable speed read channel Sep 15, 2002 Issued
Array ( [id] => 1007031 [patent_doc_number] => 06906878 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-06-14 [patent_title] => 'Method and system for implementing in situ low flyheight warning' [patent_app_type] => utility [patent_app_number] => 10/219893 [patent_app_country] => US [patent_app_date] => 2002-08-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 3986 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/906/06906878.pdf [firstpage_image] =>[orig_patent_app_number] => 10219893 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/219893
Method and system for implementing in situ low flyheight warning Aug 14, 2002 Issued
Array ( [id] => 1194705 [patent_doc_number] => 06731441 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-05-04 [patent_title] => 'Information recording and reproducing apparatus' [patent_app_type] => B2 [patent_app_number] => 10/214599 [patent_app_country] => US [patent_app_date] => 2002-08-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 17 [patent_figures_cnt] => 22 [patent_no_of_words] => 8839 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 9 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/731/06731441.pdf [firstpage_image] =>[orig_patent_app_number] => 10214599 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/214599
Information recording and reproducing apparatus Aug 8, 2002 Issued
Array ( [id] => 1155216 [patent_doc_number] => 06775079 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-08-10 [patent_title] => 'Signal transmission apparatus and signal recording apparatus in which a rotary transformer is used' [patent_app_type] => B2 [patent_app_number] => 10/209499 [patent_app_country] => US [patent_app_date] => 2002-07-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 4820 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 128 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/775/06775079.pdf [firstpage_image] =>[orig_patent_app_number] => 10209499 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/209499
Signal transmission apparatus and signal recording apparatus in which a rotary transformer is used Jul 30, 2002 Issued
Array ( [id] => 973711 [patent_doc_number] => 06937412 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2005-08-30 [patent_title] => 'Method and apparatus for creating a format identification block on a magnetic tape' [patent_app_type] => utility [patent_app_number] => 10/206317 [patent_app_country] => US [patent_app_date] => 2002-07-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 9 [patent_no_of_words] => 5815 [patent_no_of_claims] => 54 [patent_no_of_ind_claims] => 10 [patent_words_short_claim] => 114 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/937/06937412.pdf [firstpage_image] =>[orig_patent_app_number] => 10206317 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/206317
Method and apparatus for creating a format identification block on a magnetic tape Jul 25, 2002 Issued
Array ( [id] => 6643097 [patent_doc_number] => 20030007272 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-01-09 [patent_title] => 'Data read channel and method of controlling the same' [patent_app_type] => new [patent_app_number] => 10/189174 [patent_app_country] => US [patent_app_date] => 2002-07-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2765 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0007/20030007272.pdf [firstpage_image] =>[orig_patent_app_number] => 10189174 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/189174
Data read channel and method of controlling the same Jul 4, 2002 Issued
Array ( [id] => 6672960 [patent_doc_number] => 20030058563 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-03-27 [patent_title] => 'SDRAM interface control system and method' [patent_app_type] => new [patent_app_number] => 10/183102 [patent_app_country] => US [patent_app_date] => 2002-06-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 7859 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 52 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0058/20030058563.pdf [firstpage_image] =>[orig_patent_app_number] => 10183102 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/183102
SDRAM interface control system and method Jun 25, 2002 Abandoned
Array ( [id] => 6824374 [patent_doc_number] => 20030234996 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-12-25 [patent_title] => 'Circuit and method to match common mode flex impedance and to achieve symmetrical switching voltage outputs of write driver' [patent_app_type] => new [patent_app_number] => 10/179561 [patent_app_country] => US [patent_app_date] => 2002-06-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 1794 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0234/20030234996.pdf [firstpage_image] =>[orig_patent_app_number] => 10179561 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/179561
Circuit and method to match common mode flex impedance and to achieve symmetrical switching voltage outputs of write driver Jun 24, 2002 Issued
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