Search

Sunray Chang

Examiner (ID: 17547, Phone: (571)272-3682 , Office: P/2121 )

Most Active Art Unit
2121
Art Unit(s)
2121
Total Applications
427
Issued Applications
241
Pending Applications
14
Abandoned Applications
172

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 16629301 [patent_doc_number] => 20210047954 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-02-18 [patent_title] => Method for Operating an Exhaust System of an Internal Combustion Engine of a Motor Vehicle and Exhaust System for an Internal Combustion Engine of a Motor Vehicle [patent_app_type] => utility [patent_app_number] => 16/963111 [patent_app_country] => US [patent_app_date] => 2018-12-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5964 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16963111 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/963111
Method for operating an exhaust system of an internal combustion engine of a motor vehicle and exhaust system for an internal combustion engine of a motor vehicle Dec 20, 2018 Issued
Array ( [id] => 17743172 [patent_doc_number] => 11391231 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-07-19 [patent_title] => Internal combustion engine with exhaust gas aftertreatment and control of the nitrogen oxide emissions [patent_app_type] => utility [patent_app_number] => 17/416499 [patent_app_country] => US [patent_app_date] => 2018-12-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 9314 [patent_no_of_claims] => 20 [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] => 17416499 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/416499
Internal combustion engine with exhaust gas aftertreatment and control of the nitrogen oxide emissions Dec 19, 2018 Issued
Array ( [id] => 16062195 [patent_doc_number] => 10690036 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2020-06-23 [patent_title] => Diagnostic test for engine exhaust system [patent_app_type] => utility [patent_app_number] => 16/227920 [patent_app_country] => US [patent_app_date] => 2018-12-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 9 [patent_no_of_words] => 11095 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 154 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16227920 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/227920
Diagnostic test for engine exhaust system Dec 19, 2018 Issued
Array ( [id] => 16074193 [patent_doc_number] => 20200191083 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-06-18 [patent_title] => SYSTEMS AND METHODS FOR OXYGEN SENSOR LIGHT-OFF [patent_app_type] => utility [patent_app_number] => 16/223948 [patent_app_country] => US [patent_app_date] => 2018-12-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11556 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 34 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16223948 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/223948
Systems and methods for oxygen sensor light-off Dec 17, 2018 Issued
Array ( [id] => 17142383 [patent_doc_number] => 20210310395 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-10-07 [patent_title] => ENGINE EXHAUST AFTERTREATMENT DEVICE AND METHOD [patent_app_type] => utility [patent_app_number] => 17/287935 [patent_app_country] => US [patent_app_date] => 2018-12-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4929 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 398 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17287935 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/287935
Engine exhaust aftertreatment device and method Dec 13, 2018 Issued
Array ( [id] => 14469369 [patent_doc_number] => 20190186327 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-06-20 [patent_title] => ABNORMALITY DIAGNOSIS DEVICE FOR REDUCING AGENT ADDING DEVICE [patent_app_type] => utility [patent_app_number] => 16/218669 [patent_app_country] => US [patent_app_date] => 2018-12-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 18201 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 299 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16218669 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/218669
Abnormality diagnosis device for reducing agent adding device Dec 12, 2018 Issued
Array ( [id] => 14469369 [patent_doc_number] => 20190186327 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-06-20 [patent_title] => ABNORMALITY DIAGNOSIS DEVICE FOR REDUCING AGENT ADDING DEVICE [patent_app_type] => utility [patent_app_number] => 16/218669 [patent_app_country] => US [patent_app_date] => 2018-12-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 18201 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 299 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16218669 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/218669
Abnormality diagnosis device for reducing agent adding device Dec 12, 2018 Issued
Array ( [id] => 16461428 [patent_doc_number] => 10844768 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-11-24 [patent_title] => Abnormality determination device [patent_app_type] => utility [patent_app_number] => 16/218723 [patent_app_country] => US [patent_app_date] => 2018-12-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 10 [patent_no_of_words] => 8813 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [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] => 16218723 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/218723
Abnormality determination device Dec 12, 2018 Issued
Array ( [id] => 14469369 [patent_doc_number] => 20190186327 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-06-20 [patent_title] => ABNORMALITY DIAGNOSIS DEVICE FOR REDUCING AGENT ADDING DEVICE [patent_app_type] => utility [patent_app_number] => 16/218669 [patent_app_country] => US [patent_app_date] => 2018-12-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 18201 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 299 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16218669 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/218669
Abnormality diagnosis device for reducing agent adding device Dec 12, 2018 Issued
Array ( [id] => 14469369 [patent_doc_number] => 20190186327 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-06-20 [patent_title] => ABNORMALITY DIAGNOSIS DEVICE FOR REDUCING AGENT ADDING DEVICE [patent_app_type] => utility [patent_app_number] => 16/218669 [patent_app_country] => US [patent_app_date] => 2018-12-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 18201 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 299 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16218669 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/218669
Abnormality diagnosis device for reducing agent adding device Dec 12, 2018 Issued
Array ( [id] => 16074179 [patent_doc_number] => 20200191076 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-06-18 [patent_title] => CONTROL SYSTEM FOR VARIABLE DISPLACEMENT ENGINE [patent_app_type] => utility [patent_app_number] => 16/218087 [patent_app_country] => US [patent_app_date] => 2018-12-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6369 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 69 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16218087 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/218087
Control system for variable displacement engine Dec 11, 2018 Issued
Array ( [id] => 16591148 [patent_doc_number] => 10900399 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-01-26 [patent_title] => Movable emission control system for auxiliary diesel engines [patent_app_type] => utility [patent_app_number] => 16/215099 [patent_app_country] => US [patent_app_date] => 2018-12-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 17 [patent_no_of_words] => 5557 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16215099 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/215099
Movable emission control system for auxiliary diesel engines Dec 9, 2018 Issued
Array ( [id] => 15979187 [patent_doc_number] => 10669908 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2020-06-02 [patent_title] => Power generating systems and methods for reducing startup NOx emissions in fossile fueled power generation system [patent_app_type] => utility [patent_app_number] => 16/208084 [patent_app_country] => US [patent_app_date] => 2018-12-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 9 [patent_no_of_words] => 7636 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 121 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16208084 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/208084
Power generating systems and methods for reducing startup NOx emissions in fossile fueled power generation system Dec 2, 2018 Issued
Array ( [id] => 17976095 [patent_doc_number] => 11492946 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-11-08 [patent_title] => Aftertreatment system [patent_app_type] => utility [patent_app_number] => 17/296031 [patent_app_country] => US [patent_app_date] => 2018-11-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 5469 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 198 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17296031 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/296031
Aftertreatment system Nov 25, 2018 Issued
Array ( [id] => 16468977 [patent_doc_number] => 20200370514 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-11-26 [patent_title] => METHOD FOR OPERATING A CATALYTIC EVAPORATOR AND USES OF THE METHOD [patent_app_type] => utility [patent_app_number] => 16/766802 [patent_app_country] => US [patent_app_date] => 2018-11-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3823 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16766802 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/766802
Method for operating a catalytic evaporator and uses of the method Nov 21, 2018 Issued
Array ( [id] => 16484686 [patent_doc_number] => 20200378287 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-12-03 [patent_title] => Method for Operating an Exhaust System, in Particular of a Motor Vehicle [patent_app_type] => utility [patent_app_number] => 16/766482 [patent_app_country] => US [patent_app_date] => 2018-11-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7177 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16766482 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/766482
Method for operating an exhaust system, in particular of a motor vehicle Nov 15, 2018 Issued
Array ( [id] => 17435098 [patent_doc_number] => 11260406 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-03-01 [patent_title] => Injector [patent_app_type] => utility [patent_app_number] => 16/764058 [patent_app_country] => US [patent_app_date] => 2018-11-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 13 [patent_no_of_words] => 3284 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 239 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16764058 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/764058
Injector Nov 12, 2018 Issued
Array ( [id] => 16043847 [patent_doc_number] => 10683787 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-06-16 [patent_title] => Automotive exhaust aftertreatment system having onboard ammonia reactor with hybrid heating [patent_app_type] => utility [patent_app_number] => 16/184540 [patent_app_country] => US [patent_app_date] => 2018-11-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 5526 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 147 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16184540 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/184540
Automotive exhaust aftertreatment system having onboard ammonia reactor with hybrid heating Nov 7, 2018 Issued
Array ( [id] => 16407304 [patent_doc_number] => 10815850 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-10-27 [patent_title] => Method for catalyst purge control based on engine temperature and vehicle using the same [patent_app_type] => utility [patent_app_number] => 16/179130 [patent_app_country] => US [patent_app_date] => 2018-11-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 4726 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 139 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16179130 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/179130
Method for catalyst purge control based on engine temperature and vehicle using the same Nov 1, 2018 Issued
Array ( [id] => 14408385 [patent_doc_number] => 20190170036 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-06-06 [patent_title] => DEVICE TO SUPPLY AN INTERNAL COMBUSTION ENGINE WITH WATER COMING FROM A TANK OF AN EXHAUST SYSTEM PROVIDED WITH EXHAUST GAS AFTER-TREATMENT [patent_app_type] => utility [patent_app_number] => 16/177595 [patent_app_country] => US [patent_app_date] => 2018-11-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4248 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 232 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16177595 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/177595
Device to supply an internal combustion engine with water coming from a tank of an exhaust system provided with exhaust gas after-treatment Oct 31, 2018 Issued
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