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] => 4379747 [patent_doc_number] => 06275345 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-08-14 [patent_title] => 'System and method for estimating a frequency of slider airbearing resonance' [patent_app_type] => 1 [patent_app_number] => 9/204396 [patent_app_country] => US [patent_app_date] => 1998-12-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 13 [patent_no_of_words] => 7607 [patent_no_of_claims] => 34 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/275/06275345.pdf [firstpage_image] =>[orig_patent_app_number] => 204396 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/204396
System and method for estimating a frequency of slider airbearing resonance Dec 1, 1998 Issued
Array ( [id] => 1589705 [patent_doc_number] => 06359743 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-03-19 [patent_title] => 'Apparatus and method for reducing thermal interference in MR heads in disk drives' [patent_app_type] => B1 [patent_app_number] => 09/197122 [patent_app_country] => US [patent_app_date] => 1998-11-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 9 [patent_no_of_words] => 5629 [patent_no_of_claims] => 39 [patent_no_of_ind_claims] => 14 [patent_words_short_claim] => 93 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/359/06359743.pdf [firstpage_image] =>[orig_patent_app_number] => 09197122 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/197122
Apparatus and method for reducing thermal interference in MR heads in disk drives Nov 19, 1998 Issued
09/117364 METHOD AND APPARATUS FOR INCREASING THE SAMPLE RATE OF A DISC DRIVE WITH LOW OVERHEAD Nov 19, 1998 Abandoned
Array ( [id] => 4392001 [patent_doc_number] => 06304404 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-10-16 [patent_title] => 'Recording medium driving apparatus and tracking method' [patent_app_type] => 1 [patent_app_number] => 9/191638 [patent_app_country] => US [patent_app_date] => 1998-11-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 18 [patent_no_of_words] => 7896 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 142 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/304/06304404.pdf [firstpage_image] =>[orig_patent_app_number] => 191638 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/191638
Recording medium driving apparatus and tracking method Nov 12, 1998 Issued
Array ( [id] => 1442871 [patent_doc_number] => 06335840 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-01-01 [patent_title] => 'Thermal asperity pointer for servo sector' [patent_app_type] => B1 [patent_app_number] => 09/188836 [patent_app_country] => US [patent_app_date] => 1998-11-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 6505 [patent_no_of_claims] => 26 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 144 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/335/06335840.pdf [firstpage_image] =>[orig_patent_app_number] => 09188836 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/188836
Thermal asperity pointer for servo sector Nov 8, 1998 Issued
Array ( [id] => 4297631 [patent_doc_number] => 06268973 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-07-31 [patent_title] => 'Generating appendable points in encoded data' [patent_app_type] => 1 [patent_app_number] => 9/182306 [patent_app_country] => US [patent_app_date] => 1998-10-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 14 [patent_no_of_words] => 11009 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 8 [patent_words_short_claim] => 74 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/268/06268973.pdf [firstpage_image] =>[orig_patent_app_number] => 182306 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/182306
Generating appendable points in encoded data Oct 29, 1998 Issued
Array ( [id] => 4393018 [patent_doc_number] => 06295177 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-09-25 [patent_title] => 'Method of and apparatus for arranging data received in a data transfer from a data source' [patent_app_type] => 1 [patent_app_number] => 9/182308 [patent_app_country] => US [patent_app_date] => 1998-10-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 14 [patent_no_of_words] => 11134 [patent_no_of_claims] => 40 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 122 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/295/06295177.pdf [firstpage_image] =>[orig_patent_app_number] => 182308 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/182308
Method of and apparatus for arranging data received in a data transfer from a data source Oct 29, 1998 Issued
Array ( [id] => 4289672 [patent_doc_number] => 06282039 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-08-28 [patent_title] => 'Scratch protection in tape data storage system' [patent_app_type] => 1 [patent_app_number] => 9/182444 [patent_app_country] => US [patent_app_date] => 1998-10-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 13 [patent_no_of_words] => 7374 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 159 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/282/06282039.pdf [firstpage_image] =>[orig_patent_app_number] => 182444 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/182444
Scratch protection in tape data storage system Oct 29, 1998 Issued
Array ( [id] => 1358189 [patent_doc_number] => 06583945 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2003-06-24 [patent_title] => 'Method for irreversibly write-securing a magnetic storage cartridge' [patent_app_type] => B1 [patent_app_number] => 09/183874 [patent_app_country] => US [patent_app_date] => 1998-10-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 8 [patent_no_of_words] => 4371 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 40 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/583/06583945.pdf [firstpage_image] =>[orig_patent_app_number] => 09183874 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/183874
Method for irreversibly write-securing a magnetic storage cartridge Oct 29, 1998 Issued
Array ( [id] => 4368067 [patent_doc_number] => 06219192 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-04-17 [patent_title] => 'Method and apparatus for the compensation of an additive signal in a data signal' [patent_app_type] => 1 [patent_app_number] => 9/179148 [patent_app_country] => US [patent_app_date] => 1998-10-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 12 [patent_no_of_words] => 8259 [patent_no_of_claims] => 49 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 103 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/219/06219192.pdf [firstpage_image] =>[orig_patent_app_number] => 179148 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/179148
Method and apparatus for the compensation of an additive signal in a data signal Oct 25, 1998 Issued
Array ( [id] => 4308579 [patent_doc_number] => 06185057 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-02-06 [patent_title] => 'Method and apparatus for increasing the speed of write driver circuitry' [patent_app_type] => 1 [patent_app_number] => 9/176227 [patent_app_country] => US [patent_app_date] => 1998-10-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 6584 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 59 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/185/06185057.pdf [firstpage_image] =>[orig_patent_app_number] => 176227 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/176227
Method and apparatus for increasing the speed of write driver circuitry Oct 20, 1998 Issued
Array ( [id] => 4425366 [patent_doc_number] => 06178059 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-01-23 [patent_title] => 'Method for writing servo information on a magnetic recording disk' [patent_app_type] => 1 [patent_app_number] => 9/176056 [patent_app_country] => US [patent_app_date] => 1998-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 1843 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 115 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/178/06178059.pdf [firstpage_image] =>[orig_patent_app_number] => 176056 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/176056
Method for writing servo information on a magnetic recording disk Oct 19, 1998 Issued
Array ( [id] => 4418198 [patent_doc_number] => 06301069 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-10-09 [patent_title] => 'Servo control apparatus utilizing clock signal and control data' [patent_app_type] => 1 [patent_app_number] => 9/162860 [patent_app_country] => US [patent_app_date] => 1998-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 7014 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 127 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/301/06301069.pdf [firstpage_image] =>[orig_patent_app_number] => 162860 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/162860
Servo control apparatus utilizing clock signal and control data Sep 28, 1998 Issued
Array ( [id] => 4168936 [patent_doc_number] => 06104560 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2000-08-15 [patent_title] => 'Method and apparatus for data reproducing in disk storage system' [patent_app_type] => 1 [patent_app_number] => 9/162885 [patent_app_country] => US [patent_app_date] => 1998-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 22 [patent_figures_cnt] => 80 [patent_no_of_words] => 7910 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 348 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/104/06104560.pdf [firstpage_image] =>[orig_patent_app_number] => 162885 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/162885
Method and apparatus for data reproducing in disk storage system Sep 28, 1998 Issued
Array ( [id] => 4418164 [patent_doc_number] => 06301066 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-10-09 [patent_title] => 'Storage device having internal and external recording circuits' [patent_app_type] => 1 [patent_app_number] => 9/162225 [patent_app_country] => US [patent_app_date] => 1998-09-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 14485 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 145 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/301/06301066.pdf [firstpage_image] =>[orig_patent_app_number] => 162225 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/162225
Storage device having internal and external recording circuits Sep 27, 1998 Issued
Array ( [id] => 4307459 [patent_doc_number] => 06181493 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-01-30 [patent_title] => 'Write fault thresholds adaptive by head and disc location in a disc drive' [patent_app_type] => 1 [patent_app_number] => 9/161105 [patent_app_country] => US [patent_app_date] => 1998-09-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 13 [patent_no_of_words] => 6581 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 73 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/181/06181493.pdf [firstpage_image] =>[orig_patent_app_number] => 161105 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/161105
Write fault thresholds adaptive by head and disc location in a disc drive Sep 24, 1998 Issued
Array ( [id] => 4425355 [patent_doc_number] => 06178054 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-01-23 [patent_title] => 'Selecting write fault thresholds by head and disc location in a disc drive' [patent_app_type] => 1 [patent_app_number] => 9/160945 [patent_app_country] => US [patent_app_date] => 1998-09-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 13 [patent_no_of_words] => 6731 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 159 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/178/06178054.pdf [firstpage_image] =>[orig_patent_app_number] => 160945 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/160945
Selecting write fault thresholds by head and disc location in a disc drive Sep 24, 1998 Issued
Array ( [id] => 4324971 [patent_doc_number] => 06317280 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-11-13 [patent_title] => 'Thermomagnetic recording and reproducing head having a heating head with a width narrower than the magnetic heads, a recording and reproducing device with such a heating head and methods related thereto' [patent_app_type] => 1 [patent_app_number] => 9/159700 [patent_app_country] => US [patent_app_date] => 1998-09-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 37 [patent_no_of_words] => 9240 [patent_no_of_claims] => 26 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 131 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/317/06317280.pdf [firstpage_image] =>[orig_patent_app_number] => 159700 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/159700
Thermomagnetic recording and reproducing head having a heating head with a width narrower than the magnetic heads, a recording and reproducing device with such a heating head and methods related thereto Sep 23, 1998 Issued
Array ( [id] => 4297621 [patent_doc_number] => 06268972 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2001-07-31 [patent_title] => 'Method for measuring relative and absolute amplitudes of a signal read from a data storage medium' [patent_app_type] => 1 [patent_app_number] => 9/157226 [patent_app_country] => US [patent_app_date] => 1998-09-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 16 [patent_no_of_words] => 8047 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 111 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/268/06268972.pdf [firstpage_image] =>[orig_patent_app_number] => 157226 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/157226
Method for measuring relative and absolute amplitudes of a signal read from a data storage medium Sep 17, 1998 Issued
Array ( [id] => 4094874 [patent_doc_number] => 06163420 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 2000-12-19 [patent_title] => 'Interleaved analog tracking timing and gain feedback loops for partial response maximum likelihood (PRML) data detection for direct access storage device (DASD)' [patent_app_type] => 1 [patent_app_number] => 9/156020 [patent_app_country] => US [patent_app_date] => 1998-09-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 11 [patent_no_of_words] => 3013 [patent_no_of_claims] => 16 [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] => patents/06/163/06163420.pdf [firstpage_image] =>[orig_patent_app_number] => 156020 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/156020
Interleaved analog tracking timing and gain feedback loops for partial response maximum likelihood (PRML) data detection for direct access storage device (DASD) Sep 16, 1998 Issued
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