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] => 2704564 [patent_doc_number] => 05056477 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-10-15 [patent_title] => 'Apparatus for adjusting a rotational angular relationship between a camshaft and its drive element' [patent_app_type] => 1 [patent_app_number] => 7/549034 [patent_app_country] => US [patent_app_date] => 1990-07-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 9 [patent_no_of_words] => 4313 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 264 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/056/05056477.pdf [firstpage_image] =>[orig_patent_app_number] => 549034 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/549034
Apparatus for adjusting a rotational angular relationship between a camshaft and its drive element Jul 5, 1990 Issued
Array ( [id] => 2654459 [patent_doc_number] => 04982706 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-01-08 [patent_title] => 'Valve control apparatus having a magnet valve for internal combustion engines' [patent_app_type] => 1 [patent_app_number] => 7/548406 [patent_app_country] => US [patent_app_date] => 1990-07-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 2514 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 212 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/982/04982706.pdf [firstpage_image] =>[orig_patent_app_number] => 548406 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/548406
Valve control apparatus having a magnet valve for internal combustion engines Jul 4, 1990 Issued
Array ( [id] => 2662741 [patent_doc_number] => 05065709 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-11-19 [patent_title] => 'Valve operating system for internal combustion engine' [patent_app_type] => 1 [patent_app_number] => 7/548123 [patent_app_country] => US [patent_app_date] => 1990-07-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 7495 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 153 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/065/05065709.pdf [firstpage_image] =>[orig_patent_app_number] => 548123 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/548123
Valve operating system for internal combustion engine Jul 4, 1990 Issued
Array ( [id] => 2747507 [patent_doc_number] => 05005538 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-04-09 [patent_title] => 'Extended circumference intake poppet valve system for opening and sealing a single valve seat' [patent_app_type] => 1 [patent_app_number] => 7/547810 [patent_app_country] => US [patent_app_date] => 1990-07-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 2131 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 119 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/005/05005538.pdf [firstpage_image] =>[orig_patent_app_number] => 547810 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/547810
Extended circumference intake poppet valve system for opening and sealing a single valve seat Jul 2, 1990 Issued
Array ( [id] => 2694031 [patent_doc_number] => 05052351 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-10-01 [patent_title] => 'Double overhead camshaft bearing structure' [patent_app_type] => 1 [patent_app_number] => 7/545953 [patent_app_country] => US [patent_app_date] => 1990-07-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 7 [patent_no_of_words] => 2462 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 182 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/052/05052351.pdf [firstpage_image] =>[orig_patent_app_number] => 545953 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/545953
Double overhead camshaft bearing structure Jul 1, 1990 Issued
Array ( [id] => 2727480 [patent_doc_number] => 05014655 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-05-14 [patent_title] => 'Camshaft drive of a multi-cylinder V-engine' [patent_app_type] => 1 [patent_app_number] => 7/546881 [patent_app_country] => US [patent_app_date] => 1990-07-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 1248 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/014/05014655.pdf [firstpage_image] =>[orig_patent_app_number] => 546881 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/546881
Camshaft drive of a multi-cylinder V-engine Jul 1, 1990 Issued
Array ( [id] => 2651495 [patent_doc_number] => 05033422 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-07-23 [patent_title] => 'Valve drive apparatus for double overhead camshaft engine' [patent_app_type] => 1 [patent_app_number] => 7/545951 [patent_app_country] => US [patent_app_date] => 1990-07-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 7 [patent_no_of_words] => 2261 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 183 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/033/05033422.pdf [firstpage_image] =>[orig_patent_app_number] => 545951 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/545951
Valve drive apparatus for double overhead camshaft engine Jul 1, 1990 Issued
Array ( [id] => 2673882 [patent_doc_number] => 05018487 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-05-28 [patent_title] => 'Valve timing mechanism with eccentric bushing on rocker shaft' [patent_app_type] => 1 [patent_app_number] => 7/545741 [patent_app_country] => US [patent_app_date] => 1990-06-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 16 [patent_no_of_words] => 5643 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 198 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/018/05018487.pdf [firstpage_image] =>[orig_patent_app_number] => 545741 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/545741
Valve timing mechanism with eccentric bushing on rocker shaft Jun 28, 1990 Issued
Array ( [id] => 2777511 [patent_doc_number] => 05143032 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-09-01 [patent_title] => 'Timing variator, particularly for changing the relative timing between a camshaft and the timing drive mechanism of an internal combustion engine' [patent_app_type] => 1 [patent_app_number] => 7/545021 [patent_app_country] => US [patent_app_date] => 1990-06-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 1767 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 212 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/143/05143032.pdf [firstpage_image] =>[orig_patent_app_number] => 545021 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/545021
Timing variator, particularly for changing the relative timing between a camshaft and the timing drive mechanism of an internal combustion engine Jun 27, 1990 Issued
Array ( [id] => 2687869 [patent_doc_number] => 05054440 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-10-08 [patent_title] => 'Cam follower device for valve driving mechanism in engine' [patent_app_type] => 1 [patent_app_number] => 7/543645 [patent_app_country] => US [patent_app_date] => 1990-06-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 18 [patent_no_of_words] => 5030 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 24 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/054/05054440.pdf [firstpage_image] =>[orig_patent_app_number] => 543645 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/543645
Cam follower device for valve driving mechanism in engine Jun 25, 1990 Issued
Array ( [id] => 2689707 [patent_doc_number] => 05060605 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-10-29 [patent_title] => 'Valve drive mechanism for vehicle engine' [patent_app_type] => 1 [patent_app_number] => 7/543591 [patent_app_country] => US [patent_app_date] => 1990-06-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 10 [patent_no_of_words] => 3883 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 183 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/060/05060605.pdf [firstpage_image] =>[orig_patent_app_number] => 543591 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/543591
Valve drive mechanism for vehicle engine Jun 25, 1990 Issued
Array ( [id] => 2729384 [patent_doc_number] => 05036807 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-08-06 [patent_title] => 'Variable valve timing lift device' [patent_app_type] => 1 [patent_app_number] => 7/541893 [patent_app_country] => US [patent_app_date] => 1990-06-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 2619 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 125 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/036/05036807.pdf [firstpage_image] =>[orig_patent_app_number] => 541893 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/541893
Variable valve timing lift device Jun 21, 1990 Issued
Array ( [id] => 2747543 [patent_doc_number] => 05005540 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-04-09 [patent_title] => 'Valve timing control system for an internal combustion engine' [patent_app_type] => 1 [patent_app_number] => 7/541711 [patent_app_country] => US [patent_app_date] => 1990-06-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2705 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 182 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/005/05005540.pdf [firstpage_image] =>[orig_patent_app_number] => 541711 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/541711
Valve timing control system for an internal combustion engine Jun 20, 1990 Issued
Array ( [id] => 2659667 [patent_doc_number] => 05044329 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-09-03 [patent_title] => 'Adjustable pushrod guide plate assembly' [patent_app_type] => 1 [patent_app_number] => 7/524035 [patent_app_country] => US [patent_app_date] => 1990-06-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 433 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/044/05044329.pdf [firstpage_image] =>[orig_patent_app_number] => 524035 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/524035
Adjustable pushrod guide plate assembly Jun 18, 1990 Issued
Array ( [id] => 2796334 [patent_doc_number] => 05085181 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-02-04 [patent_title] => 'Electro/hydraulic variable valve timing system' [patent_app_type] => 1 [patent_app_number] => 7/539238 [patent_app_country] => US [patent_app_date] => 1990-06-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 6 [patent_no_of_words] => 2955 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 69 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/085/05085181.pdf [firstpage_image] =>[orig_patent_app_number] => 539238 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/539238
Electro/hydraulic variable valve timing system Jun 17, 1990 Issued
Array ( [id] => 2833134 [patent_doc_number] => 05125370 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-06-30 [patent_title] => 'Control system for electromagnetically driven valve' [patent_app_type] => 1 [patent_app_number] => 7/499338 [patent_app_country] => US [patent_app_date] => 1990-06-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 2383 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 155 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/125/05125370.pdf [firstpage_image] =>[orig_patent_app_number] => 499338 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/499338
Control system for electromagnetically driven valve Jun 17, 1990 Issued
Array ( [id] => 2844909 [patent_doc_number] => 05081976 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-01-21 [patent_title] => 'Bucket tappet for an internal combustion engine with overhead camshaft' [patent_app_type] => 1 [patent_app_number] => 7/539210 [patent_app_country] => US [patent_app_date] => 1990-06-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1194 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 104 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/081/05081976.pdf [firstpage_image] =>[orig_patent_app_number] => 539210 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/539210
Bucket tappet for an internal combustion engine with overhead camshaft Jun 17, 1990 Issued
Array ( [id] => 2652869 [patent_doc_number] => 05025761 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-06-25 [patent_title] => 'Variable valve-timing device' [patent_app_type] => 1 [patent_app_number] => 7/537374 [patent_app_country] => US [patent_app_date] => 1990-06-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 9 [patent_no_of_words] => 2125 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 470 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/025/05025761.pdf [firstpage_image] =>[orig_patent_app_number] => 537374 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/537374
Variable valve-timing device Jun 12, 1990 Issued
Array ( [id] => 2689689 [patent_doc_number] => 05060604 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-10-29 [patent_title] => 'Method of detecting failure of a valve timing changeover control system of an internal combustion engine' [patent_app_type] => 1 [patent_app_number] => 7/536745 [patent_app_country] => US [patent_app_date] => 1990-06-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 7162 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 44 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/060/05060604.pdf [firstpage_image] =>[orig_patent_app_number] => 536745 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/536745
Method of detecting failure of a valve timing changeover control system of an internal combustion engine Jun 11, 1990 Issued
07/533733 ELECTRO-RHEOLOGICAL VALVE CONTROL MECHANISM Jun 4, 1990 Abandoned
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