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
Array ( [id] => 2727020 [patent_doc_number] => 05027761 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-07-02 [patent_title] => 'Valve operating mechanism for internal combustion engine with a spark plug insertion hole in a rocker arm holder' [patent_app_type] => 1 [patent_app_number] => 7/416287 [patent_app_country] => US [patent_app_date] => 1989-10-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 2506 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 145 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/027/05027761.pdf [firstpage_image] =>[orig_patent_app_number] => 416287 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/416287
Valve operating mechanism for internal combustion engine with a spark plug insertion hole in a rocker arm holder Oct 1, 1989 Issued
Array ( [id] => 2718258 [patent_doc_number] => 04996955 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-03-05 [patent_title] => 'Intake- and/or exhaust-valve timing control system for internal combustion engines' [patent_app_type] => 1 [patent_app_number] => 7/414241 [patent_app_country] => US [patent_app_date] => 1989-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 7 [patent_no_of_words] => 4996 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 232 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/996/04996955.pdf [firstpage_image] =>[orig_patent_app_number] => 414241 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/414241
Intake- and/or exhaust-valve timing control system for internal combustion engines Sep 28, 1989 Issued
Array ( [id] => 2544396 [patent_doc_number] => 04960084 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-10-02 [patent_title] => 'Valve timing control system for internal combustion engine' [patent_app_type] => 1 [patent_app_number] => 7/414236 [patent_app_country] => US [patent_app_date] => 1989-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3965 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 240 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/960/04960084.pdf [firstpage_image] =>[orig_patent_app_number] => 414236 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/414236
Valve timing control system for internal combustion engine Sep 28, 1989 Issued
Array ( [id] => 2675971 [patent_doc_number] => 04989556 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-02-05 [patent_title] => 'Valve spring retainer for valve operating mechanism for internal combustion engine' [patent_app_type] => 1 [patent_app_number] => 7/414692 [patent_app_country] => US [patent_app_date] => 1989-09-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 15 [patent_no_of_words] => 12312 [patent_no_of_claims] => 39 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 53 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/989/04989556.pdf [firstpage_image] =>[orig_patent_app_number] => 414692 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/414692
Valve spring retainer for valve operating mechanism for internal combustion engine Sep 27, 1989 Issued
Array ( [id] => 2547912 [patent_doc_number] => 04944257 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-07-31 [patent_title] => 'Cold-formed rocker arm with bearing flanges and splash plate' [patent_app_type] => 1 [patent_app_number] => 7/413229 [patent_app_country] => US [patent_app_date] => 1989-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 1451 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/944/04944257.pdf [firstpage_image] =>[orig_patent_app_number] => 413229 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/413229
Cold-formed rocker arm with bearing flanges and splash plate Sep 26, 1989 Issued
Array ( [id] => 2582777 [patent_doc_number] => 04930464 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-06-05 [patent_title] => 'Hydraulically operating actuating device for a lift valve' [patent_app_type] => 1 [patent_app_number] => 7/413212 [patent_app_country] => US [patent_app_date] => 1989-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 2616 [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/04/930/04930464.pdf [firstpage_image] =>[orig_patent_app_number] => 413212 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/413212
Hydraulically operating actuating device for a lift valve Sep 26, 1989 Issued
Array ( [id] => 2613153 [patent_doc_number] => 04936264 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-06-26 [patent_title] => 'Intake- and/or exhaust-valve timing control system for internal combustion engines' [patent_app_type] => 1 [patent_app_number] => 7/411884 [patent_app_country] => US [patent_app_date] => 1989-09-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 4916 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 292 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/936/04936264.pdf [firstpage_image] =>[orig_patent_app_number] => 411884 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/411884
Intake- and/or exhaust-valve timing control system for internal combustion engines Sep 24, 1989 Issued
07/406081 VALVE DRIVING MEANS FOR V-TYPE ENGINE OF VEHICLE Sep 11, 1989 Abandoned
07/405769 ELECTRO-RHEOLOGICAL FUEL INJECTOR Sep 10, 1989 Abandoned
Array ( [id] => 2576987 [patent_doc_number] => 04922867 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-05-08 [patent_title] => 'Valve stop mechanism for internal combustion engines' [patent_app_type] => 1 [patent_app_number] => 7/400706 [patent_app_country] => US [patent_app_date] => 1989-08-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 4690 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 54 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/922/04922867.pdf [firstpage_image] =>[orig_patent_app_number] => 400706 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/400706
Valve stop mechanism for internal combustion engines Aug 29, 1989 Issued
Array ( [id] => 2726880 [patent_doc_number] => 05002022 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-03-26 [patent_title] => 'Valve control system with a variable timing hydraulic link' [patent_app_type] => 1 [patent_app_number] => 7/400705 [patent_app_country] => US [patent_app_date] => 1989-08-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 7822 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 344 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/002/05002022.pdf [firstpage_image] =>[orig_patent_app_number] => 400705 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/400705
Valve control system with a variable timing hydraulic link Aug 29, 1989 Issued
Array ( [id] => 2582758 [patent_doc_number] => 04930463 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-06-05 [patent_title] => 'Electro-rheological valve control mechanism' [patent_app_type] => 1 [patent_app_number] => 7/399178 [patent_app_country] => US [patent_app_date] => 1989-08-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 22 [patent_no_of_words] => 6662 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 152 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/930/04930463.pdf [firstpage_image] =>[orig_patent_app_number] => 399178 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/399178
Electro-rheological valve control mechanism Aug 27, 1989 Issued
Array ( [id] => 2618373 [patent_doc_number] => 04913106 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-04-03 [patent_title] => 'Variable duration valve lifter improvements' [patent_app_type] => 1 [patent_app_number] => 7/398883 [patent_app_country] => US [patent_app_date] => 1989-08-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 8 [patent_no_of_words] => 2973 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 36 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/913/04913106.pdf [firstpage_image] =>[orig_patent_app_number] => 398883 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/398883
Variable duration valve lifter improvements Aug 27, 1989 Issued
Array ( [id] => 2614851 [patent_doc_number] => 04951623 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-08-28 [patent_title] => 'Double overhead camshaft engine' [patent_app_type] => 1 [patent_app_number] => 7/397854 [patent_app_country] => US [patent_app_date] => 1989-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 2828 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 165 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/951/04951623.pdf [firstpage_image] =>[orig_patent_app_number] => 397854 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/397854
Double overhead camshaft engine Aug 23, 1989 Issued
Array ( [id] => 2727002 [patent_doc_number] => 05027760 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-07-02 [patent_title] => 'Variable timing system for engine valve operating gear' [patent_app_type] => 1 [patent_app_number] => 7/415249 [patent_app_country] => US [patent_app_date] => 1989-08-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 8 [patent_no_of_words] => 3276 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 323 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/027/05027760.pdf [firstpage_image] =>[orig_patent_app_number] => 415249 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/415249
Variable timing system for engine valve operating gear Aug 21, 1989 Issued
Array ( [id] => 2688694 [patent_doc_number] => 05012773 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-05-07 [patent_title] => 'Intake- and/or exhaust-valve timing control system for internal combustion engine' [patent_app_type] => 1 [patent_app_number] => 7/395582 [patent_app_country] => US [patent_app_date] => 1989-08-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 4094 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 191 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/012/05012773.pdf [firstpage_image] =>[orig_patent_app_number] => 395582 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/395582
Intake- and/or exhaust-valve timing control system for internal combustion engine Aug 17, 1989 Issued
Array ( [id] => 2617799 [patent_doc_number] => 04909197 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-03-20 [patent_title] => 'Cam follower assembly with pinless roller' [patent_app_type] => 1 [patent_app_number] => 7/394668 [patent_app_country] => US [patent_app_date] => 1989-08-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 9 [patent_no_of_words] => 3719 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 150 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/909/04909197.pdf [firstpage_image] =>[orig_patent_app_number] => 394668 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/394668
Cam follower assembly with pinless roller Aug 15, 1989 Issued
Array ( [id] => 2606520 [patent_doc_number] => 04949687 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-08-21 [patent_title] => 'Four valve cylinder head for a four cycle engine' [patent_app_type] => 1 [patent_app_number] => 7/399478 [patent_app_country] => US [patent_app_date] => 1989-08-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2640 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 143 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/949/04949687.pdf [firstpage_image] =>[orig_patent_app_number] => 399478 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/399478
Four valve cylinder head for a four cycle engine Aug 15, 1989 Issued
Array ( [id] => 2547894 [patent_doc_number] => 04944256 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-07-31 [patent_title] => 'Rocker arm arrangement for internal combustion engine poppet valves and the like' [patent_app_type] => 1 [patent_app_number] => 7/394091 [patent_app_country] => US [patent_app_date] => 1989-08-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 16 [patent_no_of_words] => 3100 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 179 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/944/04944256.pdf [firstpage_image] =>[orig_patent_app_number] => 394091 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/394091
Rocker arm arrangement for internal combustion engine poppet valves and the like Aug 14, 1989 Issued
Array ( [id] => 2718240 [patent_doc_number] => 04996954 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-03-05 [patent_title] => 'Method for detecting an irregularity in valve-timing changeover in an engine' [patent_app_type] => 1 [patent_app_number] => 7/388235 [patent_app_country] => US [patent_app_date] => 1989-08-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 12 [patent_no_of_words] => 6675 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 162 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/996/04996954.pdf [firstpage_image] =>[orig_patent_app_number] => 388235 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/388235
Method for detecting an irregularity in valve-timing changeover in an engine Jul 31, 1989 Issued
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