Search

Joseph Chang

Examiner (ID: 14238, Phone: (571)272-1759 , Office: P/2842 )

Most Active Art Unit
2817
Art Unit(s)
2843, 2817, 2842, 2849
Total Applications
2166
Issued Applications
1914
Pending Applications
115
Abandoned Applications
170

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 16761792 [patent_doc_number] => 20210107373 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-15 [patent_title] => POWER FEED SYSTEM [patent_app_type] => utility [patent_app_number] => 17/069536 [patent_app_country] => US [patent_app_date] => 2020-10-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 18174 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 186 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17069536 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/069536
Power feed system Oct 12, 2020 Issued
Array ( [id] => 16766091 [patent_doc_number] => 20210111673 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-15 [patent_title] => RC OSCILLATOR [patent_app_type] => utility [patent_app_number] => 17/062904 [patent_app_country] => US [patent_app_date] => 2020-10-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5003 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 67 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17062904 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/062904
RC oscillator Oct 4, 2020 Issued
Array ( [id] => 16782592 [patent_doc_number] => 20210119671 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-22 [patent_title] => SWITCHING TRANSFORMERS AND ELECTRONIC SYSTEMS INCLUDING THE SAME [patent_app_type] => utility [patent_app_number] => 17/060743 [patent_app_country] => US [patent_app_date] => 2020-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9177 [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] => 17060743 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/060743
Switching transformers and electronic systems including the same Sep 30, 2020 Issued
Array ( [id] => 17867922 [patent_doc_number] => 20220290658 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-15 [patent_title] => Method for Storing Potential Energy [patent_app_type] => utility [patent_app_number] => 17/763447 [patent_app_country] => US [patent_app_date] => 2020-09-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4615 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [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] => 17763447 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/763447
Method for storing potential energy Sep 24, 2020 Issued
Array ( [id] => 17653310 [patent_doc_number] => 11356057 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-06-07 [patent_title] => Temperature control circuit, oscillation control circuit, and temperature control method [patent_app_type] => utility [patent_app_number] => 17/029675 [patent_app_country] => US [patent_app_date] => 2020-09-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 19 [patent_no_of_words] => 8191 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 161 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17029675 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/029675
Temperature control circuit, oscillation control circuit, and temperature control method Sep 22, 2020 Issued
Array ( [id] => 16921382 [patent_doc_number] => 20210194474 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-06-24 [patent_title] => METHOD OF GENERATING PRECISE AND PVT-STABLE TIME DELAY OR FREQUENCY USING CMOS CIRCUITS [patent_app_type] => utility [patent_app_number] => 17/022608 [patent_app_country] => US [patent_app_date] => 2020-09-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8068 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -24 [patent_words_short_claim] => 187 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17022608 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/022608
Method of generating precise and PVT-stable time delay or frequency using CMOS circuits Sep 15, 2020 Issued
Array ( [id] => 16752988 [patent_doc_number] => 20210105000 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-08 [patent_title] => PEDESTAL MOUNTED WITH BLANK, CRYSTAL UNIT AND OSCILLATOR [patent_app_type] => utility [patent_app_number] => 17/020835 [patent_app_country] => US [patent_app_date] => 2020-09-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3955 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 35 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17020835 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/020835
PEDESTAL MOUNTED WITH BLANK, CRYSTAL UNIT AND OSCILLATOR Sep 14, 2020 Abandoned
Array ( [id] => 17965627 [patent_doc_number] => 20220346208 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-10-27 [patent_title] => DETERMINING AN ALTERNATIVE POSITION FOR A LIGHTING DEVICE FOR IMPROVING AN AUXILIARY FUNCTION [patent_app_type] => utility [patent_app_number] => 17/640565 [patent_app_country] => US [patent_app_date] => 2020-09-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8294 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 189 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17640565 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/640565
DETERMINING AN ALTERNATIVE POSITION FOR A LIGHTING DEVICE FOR IMPROVING AN AUXILIARY FUNCTION Sep 7, 2020 Pending
Array ( [id] => 17054271 [patent_doc_number] => 20210263705 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-08-26 [patent_title] => CALCULATING DEVICE [patent_app_type] => utility [patent_app_number] => 17/012716 [patent_app_country] => US [patent_app_date] => 2020-09-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 13255 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 185 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17012716 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/012716
Calculating device Sep 3, 2020 Issued
Array ( [id] => 19184344 [patent_doc_number] => 11990953 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-05-21 [patent_title] => Light trunking system having data transmission function [patent_app_type] => utility [patent_app_number] => 17/639954 [patent_app_country] => US [patent_app_date] => 2020-09-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3943 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 229 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17639954 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/639954
Light trunking system having data transmission function Sep 2, 2020 Issued
Array ( [id] => 16692902 [patent_doc_number] => 20210075381 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-03-11 [patent_title] => SYSTEMS AND METHODS FOR SPLIT-FREQUENCY AMPLIFICATION [patent_app_type] => utility [patent_app_number] => 17/011524 [patent_app_country] => US [patent_app_date] => 2020-09-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8299 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 309 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17011524 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/011524
Systems and methods for split-frequency amplification Sep 2, 2020 Issued
Array ( [id] => 17494084 [patent_doc_number] => 11283406 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-03-22 [patent_title] => Oscillator, illumination device, and imaging device [patent_app_type] => utility [patent_app_number] => 17/001828 [patent_app_country] => US [patent_app_date] => 2020-08-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 26 [patent_no_of_words] => 7990 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 83 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17001828 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/001828
Oscillator, illumination device, and imaging device Aug 24, 2020 Issued
Array ( [id] => 17501380 [patent_doc_number] => 11290098 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-03-29 [patent_title] => System and method for calibration of pulse width modulation signals with higher resolution increments [patent_app_type] => utility [patent_app_number] => 17/001410 [patent_app_country] => US [patent_app_date] => 2020-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 4161 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 125 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17001410 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/001410
System and method for calibration of pulse width modulation signals with higher resolution increments Aug 23, 2020 Issued
Array ( [id] => 17883921 [patent_doc_number] => 20220299398 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-09-22 [patent_title] => GAS MONITORING SYSTEM [patent_app_type] => utility [patent_app_number] => 17/638384 [patent_app_country] => US [patent_app_date] => 2020-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6839 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 116 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17638384 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/638384
Gas monitoring system Aug 23, 2020 Issued
Array ( [id] => 16813105 [patent_doc_number] => 20210135660 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-05-06 [patent_title] => FILTERING CIRCUIT FOR PULSE WIDTH MODULATED SIGNAL [patent_app_type] => utility [patent_app_number] => 16/991126 [patent_app_country] => US [patent_app_date] => 2020-08-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 8296 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 133 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16991126 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/991126
Filtering circuit for pulse width modulated signal Aug 11, 2020 Issued
Array ( [id] => 16813122 [patent_doc_number] => 20210135677 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-05-06 [patent_title] => SYNCHRONIZED ELECTRIC METER HAVING AN ATOMIC CLOCK [patent_app_type] => utility [patent_app_number] => 16/988171 [patent_app_country] => US [patent_app_date] => 2020-08-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4071 [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] => 16988171 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/988171
Synchronized electric meter having an atomic clock Aug 6, 2020 Issued
Array ( [id] => 17456654 [patent_doc_number] => 11271525 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-03-08 [patent_title] => Inductor-capacitor oscillator and common mode resonator [patent_app_type] => utility [patent_app_number] => 16/984474 [patent_app_country] => US [patent_app_date] => 2020-08-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 17 [patent_figures_cnt] => 17 [patent_no_of_words] => 4297 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 101 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16984474 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/984474
Inductor-capacitor oscillator and common mode resonator Aug 3, 2020 Issued
Array ( [id] => 16441119 [patent_doc_number] => 20200358446 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2020-11-12 [patent_title] => PHASE LOCK LOOP REFERENCE LOSS DETECTION [patent_app_type] => utility [patent_app_number] => 16/940880 [patent_app_country] => US [patent_app_date] => 2020-07-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6618 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 67 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16940880 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/940880
Phase lock loop reference loss detection Jul 27, 2020 Issued
Array ( [id] => 17494083 [patent_doc_number] => 11283405 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-03-22 [patent_title] => Oscillator circuit [patent_app_type] => utility [patent_app_number] => 16/931790 [patent_app_country] => US [patent_app_date] => 2020-07-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 10 [patent_no_of_words] => 4351 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 192 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16931790 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/931790
Oscillator circuit Jul 16, 2020 Issued
Array ( [id] => 16584472 [patent_doc_number] => 20210018874 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-01-21 [patent_title] => ELECTRONICALLY CONTROLLED MECHANICAL WATCH AND METHOD FOR CONTROLLING ELECTRONICALLY CONTROLLED MECHANICAL WATCH [patent_app_type] => utility [patent_app_number] => 16/931531 [patent_app_country] => US [patent_app_date] => 2020-07-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9565 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 190 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 16931531 [rel_patent_id] =>[rel_patent_doc_number] =>)
16/931531
Electronically controlled mechanical watch and method for controlling electronically controlled mechanical watch Jul 16, 2020 Issued
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