Search

Weilun Lo

Supervisory Patent Examiner (ID: 18821, Phone: (571)272-4847 , Office: P/2179 )

Most Active Art Unit
3402
Art Unit(s)
3748, 3747, 2179, 3402, 3761, 3723, 2899
Total Applications
2327
Issued Applications
2049
Pending Applications
47
Abandoned Applications
231

Applications

Application numberTitle of the applicationFiling DateStatus
07/533737 ELECTRO-RHEOLOGICAL VALVE Jun 4, 1990 Abandoned
Array ( [id] => 2688788 [patent_doc_number] => 04991550 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-02-12 [patent_title] => 'Oil pressure rush adjuster of a directly acting type' [patent_app_type] => 1 [patent_app_number] => 7/531038 [patent_app_country] => US [patent_app_date] => 1990-05-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 9 [patent_no_of_words] => 2537 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 166 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/991/04991550.pdf [firstpage_image] =>[orig_patent_app_number] => 531038 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/531038
Oil pressure rush adjuster of a directly acting type May 30, 1990 Issued
Array ( [id] => 2728374 [patent_doc_number] => 05029560 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-07-09 [patent_title] => 'Oil pressure lash adjuster of a directly acting type' [patent_app_type] => 1 [patent_app_number] => 7/531030 [patent_app_country] => US [patent_app_date] => 1990-05-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 12 [patent_no_of_words] => 2033 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 109 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/029/05029560.pdf [firstpage_image] =>[orig_patent_app_number] => 531030 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/531030
Oil pressure lash adjuster of a directly acting type May 30, 1990 Issued
Array ( [id] => 2689740 [patent_doc_number] => 05060607 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-10-29 [patent_title] => 'Tappet structure' [patent_app_type] => 1 [patent_app_number] => 7/530694 [patent_app_country] => US [patent_app_date] => 1990-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 1981 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 286 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/060/05060607.pdf [firstpage_image] =>[orig_patent_app_number] => 530694 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/530694
Tappet structure May 29, 1990 Issued
Array ( [id] => 2692700 [patent_doc_number] => 04981117 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-01-01 [patent_title] => 'Automatic clearance adjuster' [patent_app_type] => 1 [patent_app_number] => 7/476390 [patent_app_country] => US [patent_app_date] => 1990-05-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 2638 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 218 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/981/04981117.pdf [firstpage_image] =>[orig_patent_app_number] => 476390 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/476390
Automatic clearance adjuster May 28, 1990 Issued
Array ( [id] => 2629073 [patent_doc_number] => 04979475 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-12-25 [patent_title] => 'Rocker arm with rounded channel to engage a valve stem with semi-spherical end' [patent_app_type] => 1 [patent_app_number] => 7/528417 [patent_app_country] => US [patent_app_date] => 1990-05-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 1619 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 128 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/979/04979475.pdf [firstpage_image] =>[orig_patent_app_number] => 528417 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/528417
Rocker arm with rounded channel to engage a valve stem with semi-spherical end May 24, 1990 Issued
Array ( [id] => 2687331 [patent_doc_number] => 05000137 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-03-19 [patent_title] => 'Combustion engine push rod and a method of manufacturing said push rod' [patent_app_type] => 1 [patent_app_number] => 7/527752 [patent_app_country] => US [patent_app_date] => 1990-05-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 7 [patent_no_of_words] => 1949 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 269 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/000/05000137.pdf [firstpage_image] =>[orig_patent_app_number] => 527752 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/527752
Combustion engine push rod and a method of manufacturing said push rod May 22, 1990 Issued
Array ( [id] => 2717115 [patent_doc_number] => 05050544 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-09-24 [patent_title] => 'Structure for mounting the same type of camshafts on different types of cylinder heads' [patent_app_type] => 1 [patent_app_number] => 7/526302 [patent_app_country] => US [patent_app_date] => 1990-05-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 8 [patent_no_of_words] => 4906 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 126 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/050/05050544.pdf [firstpage_image] =>[orig_patent_app_number] => 526302 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/526302
Structure for mounting the same type of camshafts on different types of cylinder heads May 20, 1990 Issued
Array ( [id] => 2742264 [patent_doc_number] => 04993369 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-02-19 [patent_title] => 'Internal combustion engine' [patent_app_type] => 1 [patent_app_number] => 7/526065 [patent_app_country] => US [patent_app_date] => 1990-05-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 10 [patent_no_of_words] => 4174 [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/04/993/04993369.pdf [firstpage_image] =>[orig_patent_app_number] => 526065 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/526065
Internal combustion engine May 17, 1990 Issued
Array ( [id] => 2817520 [patent_doc_number] => 05119773 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-06-09 [patent_title] => 'Apparatus for operating the valves on internal combustion engines with a variable valve lift curve' [patent_app_type] => 1 [patent_app_number] => 7/466443 [patent_app_country] => US [patent_app_date] => 1990-05-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2462 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 10 [patent_words_short_claim] => 21 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/119/05119773.pdf [firstpage_image] =>[orig_patent_app_number] => 466443 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/466443
Apparatus for operating the valves on internal combustion engines with a variable valve lift curve May 15, 1990 Issued
Array ( [id] => 2615956 [patent_doc_number] => 04976230 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-12-11 [patent_title] => 'Valve mechanism, preferably for an internal combustion engine, having pressure medium supply passage' [patent_app_type] => 1 [patent_app_number] => 7/523864 [patent_app_country] => US [patent_app_date] => 1990-05-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 2049 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/976/04976230.pdf [firstpage_image] =>[orig_patent_app_number] => 523864 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/523864
Valve mechanism, preferably for an internal combustion engine, having pressure medium supply passage May 14, 1990 Issued
Array ( [id] => 2747525 [patent_doc_number] => 05005539 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-04-09 [patent_title] => 'Engine cycle control system' [patent_app_type] => 1 [patent_app_number] => 7/522320 [patent_app_country] => US [patent_app_date] => 1990-05-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 11 [patent_no_of_words] => 3293 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 372 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/005/05005539.pdf [firstpage_image] =>[orig_patent_app_number] => 522320 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/522320
Engine cycle control system May 10, 1990 Issued
Array ( [id] => 2828744 [patent_doc_number] => 05103780 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-04-14 [patent_title] => 'Valve timing control system for internal combustion engine' [patent_app_type] => 1 [patent_app_number] => 7/521698 [patent_app_country] => US [patent_app_date] => 1990-05-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3954 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 192 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/103/05103780.pdf [firstpage_image] =>[orig_patent_app_number] => 521698 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/521698
Valve timing control system for internal combustion engine May 9, 1990 Issued
Array ( [id] => 2753169 [patent_doc_number] => 05074259 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-12-24 [patent_title] => 'Electrically operated cylinder valve' [patent_app_type] => 1 [patent_app_number] => 7/520725 [patent_app_country] => US [patent_app_date] => 1990-05-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2197 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 228 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/074/05074259.pdf [firstpage_image] =>[orig_patent_app_number] => 520725 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/520725
Electrically operated cylinder valve May 8, 1990 Issued
Array ( [id] => 2728354 [patent_doc_number] => 04986227 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-01-22 [patent_title] => 'Variable lift valve train' [patent_app_type] => 1 [patent_app_number] => 7/520550 [patent_app_country] => US [patent_app_date] => 1990-05-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 3938 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 155 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/986/04986227.pdf [firstpage_image] =>[orig_patent_app_number] => 520550 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/520550
Variable lift valve train May 7, 1990 Issued
Array ( [id] => 2714591 [patent_doc_number] => 05031585 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-07-16 [patent_title] => 'Electromagnetic brake for a camshaft phase change device' [patent_app_type] => 1 [patent_app_number] => 7/519969 [patent_app_country] => US [patent_app_date] => 1990-05-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 2126 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 188 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/031/05031585.pdf [firstpage_image] =>[orig_patent_app_number] => 519969 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/519969
Electromagnetic brake for a camshaft phase change device May 6, 1990 Issued
Array ( [id] => 2753188 [patent_doc_number] => 05074260 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-12-24 [patent_title] => 'Valve driving device and valve driving method for internal combustion engine' [patent_app_type] => 1 [patent_app_number] => 7/515438 [patent_app_country] => US [patent_app_date] => 1990-04-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 18 [patent_no_of_words] => 5566 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/074/05074260.pdf [firstpage_image] =>[orig_patent_app_number] => 515438 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/515438
Valve driving device and valve driving method for internal combustion engine Apr 26, 1990 Issued
Array ( [id] => 2698624 [patent_doc_number] => 05007382 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-04-16 [patent_title] => 'Cycle changeable engine' [patent_app_type] => 1 [patent_app_number] => 7/514445 [patent_app_country] => US [patent_app_date] => 1990-04-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 6250 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 277 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/007/05007382.pdf [firstpage_image] =>[orig_patent_app_number] => 514445 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/514445
Cycle changeable engine Apr 24, 1990 Issued
Array ( [id] => 2673900 [patent_doc_number] => 05018488 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-05-28 [patent_title] => 'Hydraulic tappets' [patent_app_type] => 1 [patent_app_number] => 7/514090 [patent_app_country] => US [patent_app_date] => 1990-04-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1619 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 161 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/018/05018488.pdf [firstpage_image] =>[orig_patent_app_number] => 514090 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/514090
Hydraulic tappets Apr 24, 1990 Issued
Array ( [id] => 2738582 [patent_doc_number] => 05058541 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-10-22 [patent_title] => 'Valve operating system of internal combustion engine' [patent_app_type] => 1 [patent_app_number] => 7/513795 [patent_app_country] => US [patent_app_date] => 1990-04-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 4195 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 119 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/058/05058541.pdf [firstpage_image] =>[orig_patent_app_number] => 513795 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/513795
Valve operating system of internal combustion engine Apr 23, 1990 Issued
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