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] => 16383769 [patent_doc_number] => 10808593 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-10-20 [patent_title] => Exhaust gas treatment for an internal combustion engine [patent_app_type] => utility [patent_app_number] => 15/937625 [patent_app_country] => US [patent_app_date] => 2018-03-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2730 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 174 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15937625 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/937625
Exhaust gas treatment for an internal combustion engine Mar 26, 2018 Issued
Array ( [id] => 13463413 [patent_doc_number] => 20180283249 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-10-04 [patent_title] => EGR UREA HYDROLYSIS [patent_app_type] => utility [patent_app_number] => 15/935429 [patent_app_country] => US [patent_app_date] => 2018-03-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4866 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 80 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15935429 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/935429
EGR UREA HYDROLYSIS Mar 25, 2018 Abandoned
Array ( [id] => 16029455 [patent_doc_number] => 10677138 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-06-09 [patent_title] => Heat shield and gasket for reductant delivery unit [patent_app_type] => utility [patent_app_number] => 15/934132 [patent_app_country] => US [patent_app_date] => 2018-03-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 9 [patent_no_of_words] => 3729 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 149 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15934132 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/934132
Heat shield and gasket for reductant delivery unit Mar 22, 2018 Issued
Array ( [id] => 16611130 [patent_doc_number] => 10912164 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-02-02 [patent_title] => Heating device for exhaust catalyst [patent_app_type] => utility [patent_app_number] => 16/498562 [patent_app_country] => US [patent_app_date] => 2018-03-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 18 [patent_no_of_words] => 16437 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 435 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16498562 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/498562
Heating device for exhaust catalyst Mar 21, 2018 Issued
Array ( [id] => 14869479 [patent_doc_number] => 20190284981 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-09-19 [patent_title] => SELECTIVE CATALYTIC REDUCTION FAULT DETECTION [patent_app_type] => utility [patent_app_number] => 15/925116 [patent_app_country] => US [patent_app_date] => 2018-03-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8198 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 150 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15925116 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/925116
Selective catalytic reduction fault detection Mar 18, 2018 Issued
Array ( [id] => 13463523 [patent_doc_number] => 20180283304 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-10-04 [patent_title] => EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE [patent_app_type] => utility [patent_app_number] => 15/922187 [patent_app_country] => US [patent_app_date] => 2018-03-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13800 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 129 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15922187 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/922187
Exhaust purification system of internal combustion engine Mar 14, 2018 Issued
Array ( [id] => 16533869 [patent_doc_number] => 10876458 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-12-29 [patent_title] => Microwave irradiation device, exhaust purification apparatus, automobile and management system [patent_app_type] => utility [patent_app_number] => 15/914658 [patent_app_country] => US [patent_app_date] => 2018-03-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 30 [patent_figures_cnt] => 34 [patent_no_of_words] => 14025 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 194 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15914658 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/914658
Microwave irradiation device, exhaust purification apparatus, automobile and management system Mar 6, 2018 Issued
Array ( [id] => 13445767 [patent_doc_number] => 20180274426 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-09-27 [patent_title] => EXHAUST DEVICE [patent_app_type] => utility [patent_app_number] => 15/910516 [patent_app_country] => US [patent_app_date] => 2018-03-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3008 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15910516 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/910516
Exhaust device Mar 1, 2018 Issued
Array ( [id] => 14732729 [patent_doc_number] => 10385756 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-08-20 [patent_title] => Exhaust device of engine [patent_app_type] => utility [patent_app_number] => 15/905410 [patent_app_country] => US [patent_app_date] => 2018-02-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 7679 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 313 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15905410 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/905410
Exhaust device of engine Feb 25, 2018 Issued
Array ( [id] => 15724825 [patent_doc_number] => 10610829 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-04-07 [patent_title] => Honeycomb substrate for catalyst support, and catalytic converter for exhaust gas purification [patent_app_type] => utility [patent_app_number] => 16/484994 [patent_app_country] => US [patent_app_date] => 2018-02-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 9 [patent_no_of_words] => 6733 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [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] => 16484994 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/484994
Honeycomb substrate for catalyst support, and catalytic converter for exhaust gas purification Feb 25, 2018 Issued
Array ( [id] => 14748115 [patent_doc_number] => 20190257231 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-08-22 [patent_title] => METHODS AND SYSTEMS FOR REMOVING MOISTURE FROM ENGINE EXHAUST SYSTEM [patent_app_type] => utility [patent_app_number] => 15/902946 [patent_app_country] => US [patent_app_date] => 2018-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 10790 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 73 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15902946 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/902946
Methods and systems for removing moisture from engine exhaust system Feb 21, 2018 Issued
Array ( [id] => 16468919 [patent_doc_number] => 20200370456 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-11-26 [patent_title] => SYSTEMS AND METHODS FOR DETERMINING EXHAUST FLOW RATE [patent_app_type] => utility [patent_app_number] => 16/968952 [patent_app_country] => US [patent_app_date] => 2018-02-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9342 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [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] => 16968952 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/968952
Systems and methods for determining exhaust flow rate Feb 14, 2018 Issued
Array ( [id] => 16878615 [patent_doc_number] => 11028752 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2021-06-08 [patent_title] => Reductant insertion assembly comprising a bladder [patent_app_type] => utility [patent_app_number] => 16/968320 [patent_app_country] => US [patent_app_date] => 2018-02-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 12 [patent_no_of_words] => 9233 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 111 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16968320 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/968320
Reductant insertion assembly comprising a bladder Feb 11, 2018 Issued
Array ( [id] => 15697929 [patent_doc_number] => 10605135 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-03-31 [patent_title] => System and method for the monitoring and controlling of emissions for multiple engines [patent_app_type] => utility [patent_app_number] => 15/893169 [patent_app_country] => US [patent_app_date] => 2018-02-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 18 [patent_figures_cnt] => 28 [patent_no_of_words] => 15812 [patent_no_of_claims] => 20 [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] => 15893169 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/893169
System and method for the monitoring and controlling of emissions for multiple engines Feb 8, 2018 Issued
Array ( [id] => 15310273 [patent_doc_number] => 10519830 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-12-31 [patent_title] => Method for adjusting the pressure in a pumping system [patent_app_type] => utility [patent_app_number] => 15/886227 [patent_app_country] => US [patent_app_date] => 2018-02-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 3 [patent_no_of_words] => 2057 [patent_no_of_claims] => 8 [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] => 15886227 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/886227
Method for adjusting the pressure in a pumping system Jan 31, 2018 Issued
Array ( [id] => 12815251 [patent_doc_number] => 20180163587 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-06-14 [patent_title] => SILOXANE REMOVAL SYSTEM AND MEDIA REGENERATION METHODS [patent_app_type] => utility [patent_app_number] => 15/882860 [patent_app_country] => US [patent_app_date] => 2018-01-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7133 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -21 [patent_words_short_claim] => 118 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15882860 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/882860
Siloxane removal system and media regeneration methods Jan 28, 2018 Issued
Array ( [id] => 14626015 [patent_doc_number] => 20190226375 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2019-07-25 [patent_title] => Systems and Methods for Improving Injector Accuracy [patent_app_type] => utility [patent_app_number] => 15/878952 [patent_app_country] => US [patent_app_date] => 2018-01-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7244 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 104 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15878952 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/878952
Systems and methods for improving injector accuracy Jan 23, 2018 Issued
Array ( [id] => 15667775 [patent_doc_number] => 10598109 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-03-24 [patent_title] => Methods and systems for aftertreatment preheating [patent_app_type] => utility [patent_app_number] => 15/874286 [patent_app_country] => US [patent_app_date] => 2018-01-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 7187 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 146 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15874286 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/874286
Methods and systems for aftertreatment preheating Jan 17, 2018 Issued
Array ( [id] => 15542055 [patent_doc_number] => 10570797 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2020-02-25 [patent_title] => Exhaust after-treatment system with improved DEF purge cycling in agricultural vehicles [patent_app_type] => utility [patent_app_number] => 15/863032 [patent_app_country] => US [patent_app_date] => 2018-01-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 4280 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 247 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15863032 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/863032
Exhaust after-treatment system with improved DEF purge cycling in agricultural vehicles Jan 4, 2018 Issued
Array ( [id] => 12887233 [patent_doc_number] => 20180187586 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2018-07-05 [patent_title] => EXHAUST SYSTEM [patent_app_type] => utility [patent_app_number] => 15/861934 [patent_app_country] => US [patent_app_date] => 2018-01-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3680 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 84 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 15861934 [rel_patent_id] =>[rel_patent_doc_number] =>)
15/861934
Exhaust system Jan 3, 2018 Issued
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