Search

William C. Choi

Examiner (ID: 3782, Phone: (571)272-2324 , Office: P/2872 )

Most Active Art Unit
2872
Art Unit(s)
2872, 2873
Total Applications
2412
Issued Applications
2216
Pending Applications
104
Abandoned Applications
130

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 5998317 [patent_doc_number] => 20020027733 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-03-07 [patent_title] => 'Disturbance detection circuit, memory device thereof, and disturbance detection method' [patent_app_type] => new [patent_app_number] => 09/761736 [patent_app_country] => US [patent_app_date] => 2001-01-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 5414 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 55 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0027/20020027733.pdf [firstpage_image] =>[orig_patent_app_number] => 09761736 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/761736
Disturbance detection circuit, memory device thereof, and disturbance detection method Jan 17, 2001 Issued
Array ( [id] => 1428562 [patent_doc_number] => 06515813 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2003-02-04 [patent_title] => 'Method for controlling servo information detection timing and rotational speed of disk, and disk drive' [patent_app_type] => B2 [patent_app_number] => 09/764538 [patent_app_country] => US [patent_app_date] => 2001-01-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 18 [patent_no_of_words] => 12347 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 123 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/515/06515813.pdf [firstpage_image] =>[orig_patent_app_number] => 09764538 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/764538
Method for controlling servo information detection timing and rotational speed of disk, and disk drive Jan 16, 2001 Issued
Array ( [id] => 1520278 [patent_doc_number] => 06501607 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2002-12-31 [patent_title] => 'Channel quality monitor (CQM) for digital peak detection (DPD)' [patent_app_type] => B2 [patent_app_number] => 09/757840 [patent_app_country] => US [patent_app_date] => 2001-01-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 13 [patent_no_of_words] => 8591 [patent_no_of_claims] => 34 [patent_no_of_ind_claims] => 16 [patent_words_short_claim] => 81 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/501/06501607.pdf [firstpage_image] =>[orig_patent_app_number] => 09757840 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/757840
Channel quality monitor (CQM) for digital peak detection (DPD) Jan 9, 2001 Issued
Array ( [id] => 1538185 [patent_doc_number] => 06490107 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2002-12-03 [patent_title] => 'Recording/reproducing apparatus having clock generating means for generating all of the required clock signals from a single reference crystal' [patent_app_type] => B2 [patent_app_number] => 09/756934 [patent_app_country] => US [patent_app_date] => 2001-01-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 1556 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 73 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/490/06490107.pdf [firstpage_image] =>[orig_patent_app_number] => 09756934 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/756934
Recording/reproducing apparatus having clock generating means for generating all of the required clock signals from a single reference crystal Jan 8, 2001 Issued
Array ( [id] => 6421913 [patent_doc_number] => 20020126407 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-09-12 [patent_title] => 'Use of snake-in-the-box codes for reliable identification of tracks in servo fields of a disk drive' [patent_app_type] => new [patent_app_number] => 09/755413 [patent_app_country] => US [patent_app_date] => 2001-01-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 5123 [patent_no_of_claims] => 48 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 44 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0126/20020126407.pdf [firstpage_image] =>[orig_patent_app_number] => 09755413 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/755413
Use of snake-in-the-box codes for reliable identification of tracks in servo fields of a disk drive Jan 4, 2001 Issued
Array ( [id] => 1422894 [patent_doc_number] => 06529340 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2003-03-04 [patent_title] => 'Asymmetry correction circuit' [patent_app_type] => B2 [patent_app_number] => 09/753316 [patent_app_country] => US [patent_app_date] => 2000-12-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 2415 [patent_no_of_claims] => 18 [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] => patents/06/529/06529340.pdf [firstpage_image] =>[orig_patent_app_number] => 09753316 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/753316
Asymmetry correction circuit Dec 28, 2000 Issued
Array ( [id] => 1431316 [patent_doc_number] => 06504662 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2003-01-07 [patent_title] => 'Apparatus for measuring and characterizing thermal asperities in a mass data storage device' [patent_app_type] => B2 [patent_app_number] => 09/753322 [patent_app_country] => US [patent_app_date] => 2000-12-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 4676 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 78 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/504/06504662.pdf [firstpage_image] =>[orig_patent_app_number] => 09753322 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/753322
Apparatus for measuring and characterizing thermal asperities in a mass data storage device Dec 27, 2000 Issued
Array ( [id] => 5784505 [patent_doc_number] => 20020159175 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-10-31 [patent_title] => 'Method of reading magnetic information which is immunized against thermal asperities' [patent_app_type] => new [patent_app_number] => 09/914244 [patent_app_country] => US [patent_app_date] => 2001-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 3040 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 93 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0159/20020159175.pdf [firstpage_image] =>[orig_patent_app_number] => 09914244 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/914244
Method of reading magnetic information which is immunized against thermal asperities Dec 26, 2000 Issued
Array ( [id] => 7064132 [patent_doc_number] => 20010043418 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2001-11-22 [patent_title] => 'Information recording device' [patent_app_type] => new [patent_app_number] => 09/736826 [patent_app_country] => US [patent_app_date] => 2000-12-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 17 [patent_figures_cnt] => 17 [patent_no_of_words] => 11079 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 159 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0043/20010043418.pdf [firstpage_image] =>[orig_patent_app_number] => 09736826 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/736826
Information recording device having a function of erasing information in a standby state Dec 13, 2000 Issued
Array ( [id] => 1419274 [patent_doc_number] => 06535463 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2003-03-18 [patent_title] => 'Method and apparatus for high density recording of data on a disk, and recording medium produced thereby' [patent_app_type] => B2 [patent_app_number] => 09/735100 [patent_app_country] => US [patent_app_date] => 2000-12-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 17 [patent_no_of_words] => 6268 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 90 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/535/06535463.pdf [firstpage_image] =>[orig_patent_app_number] => 09735100 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/735100
Method and apparatus for high density recording of data on a disk, and recording medium produced thereby Dec 11, 2000 Issued
Array ( [id] => 1507027 [patent_doc_number] => 06466385 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-10-15 [patent_title] => 'Method and apparatus of forming a magnetic disk with a servo sector and a data sector on a spiral track' [patent_app_type] => B1 [patent_app_number] => 09/673900 [patent_app_country] => US [patent_app_date] => 2000-12-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 6084 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 85 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/466/06466385.pdf [firstpage_image] =>[orig_patent_app_number] => 09673900 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/673900
Method and apparatus of forming a magnetic disk with a servo sector and a data sector on a spiral track Dec 6, 2000 Issued
Array ( [id] => 1431321 [patent_doc_number] => 06504663 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2003-01-07 [patent_title] => 'Disk apparatus and disk medium having a ramp loading mechanism' [patent_app_type] => B2 [patent_app_number] => 09/731403 [patent_app_country] => US [patent_app_date] => 2000-12-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 28 [patent_no_of_words] => 8410 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 54 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/504/06504663.pdf [firstpage_image] =>[orig_patent_app_number] => 09731403 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/731403
Disk apparatus and disk medium having a ramp loading mechanism Dec 5, 2000 Issued
Array ( [id] => 5827044 [patent_doc_number] => 20020067561 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-06-06 [patent_title] => 'Method for detecting mechanical damage in a parking zone of a hard disk drive' [patent_app_type] => new [patent_app_number] => 09/732410 [patent_app_country] => US [patent_app_date] => 2000-12-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2479 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 56 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0067/20020067561.pdf [firstpage_image] =>[orig_patent_app_number] => 09732410 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/732410
Method for detecting mechanical damage in a parking zone of a hard disk drive Dec 5, 2000 Issued
Array ( [id] => 6879536 [patent_doc_number] => 20010030822 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2001-10-18 [patent_title] => 'Fly height control for a read/write head over patterned media' [patent_app_type] => new [patent_app_number] => 09/726906 [patent_app_country] => US [patent_app_date] => 2000-11-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 8732 [patent_no_of_claims] => 17 [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/A1/0030/20010030822.pdf [firstpage_image] =>[orig_patent_app_number] => 09726906 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/726906
Fly height control for a read/write head over patterned media Nov 29, 2000 Issued
Array ( [id] => 6875017 [patent_doc_number] => 20010000302 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2001-04-19 [patent_title] => 'Servo information writing method and storage device' [patent_app_type] => new-utility [patent_app_number] => 09/728366 [patent_app_country] => US [patent_app_date] => 2000-11-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 24 [patent_figures_cnt] => 24 [patent_no_of_words] => 13774 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 85 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0000/20010000302.pdf [firstpage_image] =>[orig_patent_app_number] => 09728366 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/728366
Servo information writing method and storage device Nov 29, 2000 Issued
Array ( [id] => 1457378 [patent_doc_number] => 06462896 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-10-08 [patent_title] => 'Method for minimizing adjacent track data loss during a write operation in a disk drive' [patent_app_type] => B1 [patent_app_number] => 09/728627 [patent_app_country] => US [patent_app_date] => 2000-11-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 2638 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 225 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/462/06462896.pdf [firstpage_image] =>[orig_patent_app_number] => 09728627 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/728627
Method for minimizing adjacent track data loss during a write operation in a disk drive Nov 29, 2000 Issued
Array ( [id] => 6603577 [patent_doc_number] => 20020063985 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-05-30 [patent_title] => 'Disc processing and treating system' [patent_app_type] => new [patent_app_number] => 09/726167 [patent_app_country] => US [patent_app_date] => 2000-11-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 2182 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 46 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0063/20020063985.pdf [firstpage_image] =>[orig_patent_app_number] => 09726167 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/726167
Disc processing and treating system Nov 28, 2000 Abandoned
Array ( [id] => 1549851 [patent_doc_number] => 06445522 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-09-03 [patent_title] => 'Disk device and method of generating signal representing head' [patent_app_type] => B1 [patent_app_number] => 09/716326 [patent_app_country] => US [patent_app_date] => 2000-11-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 18 [patent_figures_cnt] => 27 [patent_no_of_words] => 12337 [patent_no_of_claims] => 33 [patent_no_of_ind_claims] => 16 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/445/06445522.pdf [firstpage_image] =>[orig_patent_app_number] => 09716326 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/716326
Disk device and method of generating signal representing head Nov 20, 2000 Issued
Array ( [id] => 1507043 [patent_doc_number] => 06466388 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-10-15 [patent_title] => 'Overshoot control for voltage source/impedanced based write coil driver' [patent_app_type] => B1 [patent_app_number] => 09/715625 [patent_app_country] => US [patent_app_date] => 2000-11-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 8 [patent_no_of_words] => 1873 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 162 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/466/06466388.pdf [firstpage_image] =>[orig_patent_app_number] => 09715625 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/715625
Overshoot control for voltage source/impedanced based write coil driver Nov 16, 2000 Issued
Array ( [id] => 1410865 [patent_doc_number] => 06532127 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2003-03-11 [patent_title] => 'Differential voltage bias, voltage sense preamplifier architecture' [patent_app_type] => B1 [patent_app_number] => 09/714412 [patent_app_country] => US [patent_app_date] => 2000-11-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 2836 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 61 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/532/06532127.pdf [firstpage_image] =>[orig_patent_app_number] => 09714412 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/714412
Differential voltage bias, voltage sense preamplifier architecture Nov 15, 2000 Issued
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