Search

Ching Chang

Examiner (ID: 13656, Phone: (571)272-4857 , Office: P/3748 )

Most Active Art Unit
3748
Art Unit(s)
3748, 3746
Total Applications
1871
Issued Applications
1700
Pending Applications
11
Abandoned Applications
170

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 11874111 [patent_doc_number] => 09745874 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2017-08-29 [patent_title] => 'Piston assembly retainer with integrated spring seat' [patent_app_type] => utility [patent_app_number] => 14/919164 [patent_app_country] => US [patent_app_date] => 2015-10-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2312 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 75 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14919164 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/919164
Piston assembly retainer with integrated spring seat Oct 20, 2015 Issued
Array ( [id] => 11845091 [patent_doc_number] => 09732639 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2017-08-15 [patent_title] => 'Variable lift valve train' [patent_app_type] => utility [patent_app_number] => 14/887828 [patent_app_country] => US [patent_app_date] => 2015-10-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 1796 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 258 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14887828 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/887828
Variable lift valve train Oct 19, 2015 Issued
Array ( [id] => 11562222 [patent_doc_number] => 09624796 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2017-04-18 [patent_title] => 'Valve-timing control apparatus for internal combustion engine' [patent_app_type] => utility [patent_app_number] => 14/883718 [patent_app_country] => US [patent_app_date] => 2015-10-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 17 [patent_no_of_words] => 9031 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 195 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14883718 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/883718
Valve-timing control apparatus for internal combustion engine Oct 14, 2015 Issued
Array ( [id] => 11409465 [patent_doc_number] => 09556759 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2017-01-31 [patent_title] => 'Valve timing controller' [patent_app_type] => utility [patent_app_number] => 14/881456 [patent_app_country] => US [patent_app_date] => 2015-10-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 13 [patent_no_of_words] => 6348 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 228 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14881456 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/881456
Valve timing controller Oct 12, 2015 Issued
Array ( [id] => 10756436 [patent_doc_number] => 20160102588 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2016-04-14 [patent_title] => 'ACTUATOR FOR LIFT-SWITCHABLE VALVE TRAINS OF INTERNAL COMBUSTION ENGINES' [patent_app_type] => utility [patent_app_number] => 14/876841 [patent_app_country] => US [patent_app_date] => 2015-10-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 4880 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14876841 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/876841
Adjustment shaft actuator for lift-switchable valve trains of internal combustion engines Oct 6, 2015 Issued
Array ( [id] => 10792284 [patent_doc_number] => 20160138438 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2016-05-19 [patent_title] => 'CYLINDER HEAD ARRANGEMENT FOR VARIABLE VALVE ACTUATION ROCKER ARM ASSEMBLIES' [patent_app_type] => utility [patent_app_number] => 14/876928 [patent_app_country] => US [patent_app_date] => 2015-10-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 108 [patent_figures_cnt] => 108 [patent_no_of_words] => 54882 [patent_no_of_claims] => 47 [patent_no_of_ind_claims] => 8 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14876928 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/876928
Cylinder head arrangement for variable valve actuation rocker arm assemblies Oct 6, 2015 Issued
Array ( [id] => 11642718 [patent_doc_number] => 09664075 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2017-05-30 [patent_title] => 'Custom VVA rocker arms for left hand and right hand orientations' [patent_app_type] => utility [patent_app_number] => 14/876026 [patent_app_country] => US [patent_app_date] => 2015-10-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 94 [patent_figures_cnt] => 153 [patent_no_of_words] => 48377 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 189 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14876026 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/876026
Custom VVA rocker arms for left hand and right hand orientations Oct 5, 2015 Issued
Array ( [id] => 14120407 [patent_doc_number] => 10247054 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-04-02 [patent_title] => Electromagnetic adjusting device [patent_app_type] => utility [patent_app_number] => 15/519779 [patent_app_country] => US [patent_app_date] => 2015-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 3 [patent_no_of_words] => 1633 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 183 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15519779 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/519779
Electromagnetic adjusting device Sep 30, 2015 Issued
Array ( [id] => 11800148 [patent_doc_number] => 09540966 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2017-01-10 [patent_title] => 'Oil control valve system for valve actuation switching' [patent_app_type] => utility [patent_app_number] => 14/867569 [patent_app_country] => US [patent_app_date] => 2015-09-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 4764 [patent_no_of_claims] => 20 [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] =>[firstpage_image] =>[orig_patent_app_number] => 14867569 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/867569
Oil control valve system for valve actuation switching Sep 27, 2015 Issued
Array ( [id] => 11888547 [patent_doc_number] => 09759099 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2017-09-12 [patent_title] => 'Valve drive train device for an internal combustion engine' [patent_app_type] => utility [patent_app_number] => 14/866872 [patent_app_country] => US [patent_app_date] => 2015-09-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 2955 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14866872 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/866872
Valve drive train device for an internal combustion engine Sep 25, 2015 Issued
Array ( [id] => 13052511 [patent_doc_number] => 10047640 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2018-08-14 [patent_title] => Roller tappet and method for manufacturing a housing element of a roller tappet [patent_app_type] => utility [patent_app_number] => 14/861487 [patent_app_country] => US [patent_app_date] => 2015-09-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 1602 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 151 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14861487 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/861487
Roller tappet and method for manufacturing a housing element of a roller tappet Sep 21, 2015 Issued
Array ( [id] => 11537369 [patent_doc_number] => 09611767 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2017-04-04 [patent_title] => 'Lost motion assembly in a valve bridge for use with a valve train comprising a hydraulic lash adjuster' [patent_app_type] => utility [patent_app_number] => 14/858644 [patent_app_country] => US [patent_app_date] => 2015-09-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 11 [patent_no_of_words] => 6620 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 171 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14858644 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/858644
Lost motion assembly in a valve bridge for use with a valve train comprising a hydraulic lash adjuster Sep 17, 2015 Issued
Array ( [id] => 11800150 [patent_doc_number] => 09540969 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2017-01-10 [patent_title] => 'Variable valve mechanism of internal combustion engine' [patent_app_type] => utility [patent_app_number] => 14/856347 [patent_app_country] => US [patent_app_date] => 2015-09-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 16 [patent_no_of_words] => 6030 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 254 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14856347 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/856347
Variable valve mechanism of internal combustion engine Sep 15, 2015 Issued
Array ( [id] => 11800197 [patent_doc_number] => 09541018 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2017-01-10 [patent_title] => 'Engine cylinder bank-to-bank torque imbalance correction' [patent_app_type] => utility [patent_app_number] => 14/851033 [patent_app_country] => US [patent_app_date] => 2015-09-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 4721 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 189 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14851033 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/851033
Engine cylinder bank-to-bank torque imbalance correction Sep 10, 2015 Issued
Array ( [id] => 11298396 [patent_doc_number] => 09506396 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2016-11-29 [patent_title] => 'Twin scroll turbocharger with EGR takeoffs' [patent_app_type] => utility [patent_app_number] => 14/850865 [patent_app_country] => US [patent_app_date] => 2015-09-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 7566 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 129 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14850865 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/850865
Twin scroll turbocharger with EGR takeoffs Sep 9, 2015 Issued
Array ( [id] => 12429972 [patent_doc_number] => 09976500 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2018-05-22 [patent_title] => Method and system for selective cylinder deactivation [patent_app_type] => utility [patent_app_number] => 14/849218 [patent_app_country] => US [patent_app_date] => 2015-09-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 11060 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 52 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14849218 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/849218
Method and system for selective cylinder deactivation Sep 8, 2015 Issued
Array ( [id] => 10714925 [patent_doc_number] => 20160061072 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2016-03-03 [patent_title] => 'VALVETRAIN ASSEMBLY' [patent_app_type] => utility [patent_app_number] => 14/843287 [patent_app_country] => US [patent_app_date] => 2015-09-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 19 [patent_figures_cnt] => 19 [patent_no_of_words] => 6443 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14843287 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/843287
Valvetrain assembly Sep 1, 2015 Issued
Array ( [id] => 10799912 [patent_doc_number] => 20160146069 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2016-05-26 [patent_title] => 'METHOD AND SYSTEM FOR RELEASING JAMMING OF LOCKING PIN BY USE OF HOLDING CONTROL' [patent_app_type] => utility [patent_app_number] => 14/838633 [patent_app_country] => US [patent_app_date] => 2015-08-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3149 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14838633 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/838633
METHOD AND SYSTEM FOR RELEASING JAMMING OF LOCKING PIN BY USE OF HOLDING CONTROL Aug 27, 2015 Abandoned
Array ( [id] => 13344331 [patent_doc_number] => 20180223705 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-08-09 [patent_title] => A VARIABLE VALVE ACTUATION MECHANISM, AN INTERNAL COMBUSTION ENGINE, AND A VEHICLE [patent_app_type] => utility [patent_app_number] => 15/750426 [patent_app_country] => US [patent_app_date] => 2015-08-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4191 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -22 [patent_words_short_claim] => 128 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15750426 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/750426
Variable valve actuation mechanism, an internal combustion engine, and a vehicle Aug 18, 2015 Issued
Array ( [id] => 10714922 [patent_doc_number] => 20160061069 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2016-03-03 [patent_title] => 'VALVE LIFT CONTROL DEVICE WITH CYLINDER DEACTIVATION' [patent_app_type] => utility [patent_app_number] => 14/828932 [patent_app_country] => US [patent_app_date] => 2015-08-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 12 [patent_no_of_words] => 9798 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 14828932 [rel_patent_id] =>[rel_patent_doc_number] =>)
14/828932
Valve lift control device with cylinder deactivation Aug 17, 2015 Issued
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