Search

Hung K Du

Examiner (ID: 6322, Phone: (571)270-1810 , Office: P/2645 )

Most Active Art Unit
2645
Art Unit(s)
2617, 2647, 2645
Total Applications
327
Issued Applications
159
Pending Applications
0
Abandoned Applications
168

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 17400544 [patent_doc_number] => 20220042634 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-02-10 [patent_title] => Coupling for Coupling of One or More Hoses to a Cleaning Machine [patent_app_type] => utility [patent_app_number] => 17/379293 [patent_app_country] => US [patent_app_date] => 2021-07-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4318 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [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] => 17379293 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/379293
Coupling for coupling of one or more hoses to a cleaning machine Jul 18, 2021 Issued
Array ( [id] => 18392289 [patent_doc_number] => 20230160508 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-05-25 [patent_title] => PIPE COUPLING GASKET [patent_app_type] => utility [patent_app_number] => 17/918082 [patent_app_country] => US [patent_app_date] => 2021-06-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6420 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 225 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17918082 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/918082
PIPE COUPLING GASKET Jun 13, 2021 Pending
Array ( [id] => 18917302 [patent_doc_number] => 11879575 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-01-23 [patent_title] => Enhanced gimbal joint for conduits [patent_app_type] => utility [patent_app_number] => 17/344595 [patent_app_country] => US [patent_app_date] => 2021-06-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 10 [patent_no_of_words] => 9948 [patent_no_of_claims] => 16 [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] => 17344595 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/344595
Enhanced gimbal joint for conduits Jun 9, 2021 Issued
Array ( [id] => 17290783 [patent_doc_number] => 20210386622 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-12-16 [patent_title] => FLUID COUPLINGS [patent_app_type] => utility [patent_app_number] => 17/331202 [patent_app_country] => US [patent_app_date] => 2021-05-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4991 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 123 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17331202 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/331202
FLUID COUPLINGS May 25, 2021 Abandoned
Array ( [id] => 17068180 [patent_doc_number] => 20210270395 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-02 [patent_title] => PENETRATION FITTING HAVING COMPRESSION SEALS AND METHODS OF INSTALLING AND USING THE SAME [patent_app_type] => utility [patent_app_number] => 17/324992 [patent_app_country] => US [patent_app_date] => 2021-05-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 24402 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -16 [patent_words_short_claim] => 132 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17324992 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/324992
Penetration fitting having compression seals and methods of installing and using the same May 18, 2021 Issued
Array ( [id] => 17068179 [patent_doc_number] => 20210270394 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-09-02 [patent_title] => PENETRATION FITTING HAVING COMPRESSION SEALS AND METHODS OF INSTALLING AND USING THE SAME [patent_app_type] => utility [patent_app_number] => 17/324852 [patent_app_country] => US [patent_app_date] => 2021-05-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 24402 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 167 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17324852 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/324852
Penetration fitting having compression seals and methods of installing and using the same May 18, 2021 Issued
Array ( [id] => 18512160 [patent_doc_number] => 20230228356 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-07-20 [patent_title] => A MULTI-CONDUIT SYSTEM [patent_app_type] => utility [patent_app_number] => 17/998538 [patent_app_country] => US [patent_app_date] => 2021-05-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3667 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -23 [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] => 17998538 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/998538
Multi-conduit system May 11, 2021 Issued
Array ( [id] => 17186029 [patent_doc_number] => 20210332914 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-10-28 [patent_title] => Critical Containment Room Fluid Feed-Through Assembly [patent_app_type] => utility [patent_app_number] => 17/238592 [patent_app_country] => US [patent_app_date] => 2021-04-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1838 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 108 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17238592 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/238592
Critical Containment Room Fluid Feed-Through Assembly Apr 22, 2021 Abandoned
Array ( [id] => 18406578 [patent_doc_number] => 20230167929 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-06-01 [patent_title] => PIPE COUPLING GASKET ASSEMBLY [patent_app_type] => utility [patent_app_number] => 17/919061 [patent_app_country] => US [patent_app_date] => 2021-04-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4408 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -8 [patent_words_short_claim] => 136 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17919061 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/919061
PIPE COUPLING GASKET ASSEMBLY Apr 20, 2021 Pending
Array ( [id] => 18702150 [patent_doc_number] => 11788653 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2023-10-17 [patent_title] => Liquid manure hose coupler [patent_app_type] => utility [patent_app_number] => 17/228523 [patent_app_country] => US [patent_app_date] => 2021-04-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 4681 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 378 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17228523 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/228523
Liquid manure hose coupler Apr 11, 2021 Issued
Array ( [id] => 17142581 [patent_doc_number] => 20210310593 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-10-07 [patent_title] => LIQUID LINE WITH A PLASTIC CORRUGATED HOSE [patent_app_type] => utility [patent_app_number] => 17/224323 [patent_app_country] => US [patent_app_date] => 2021-04-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1925 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 109 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17224323 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/224323
Liquid line with a plastic corrugated hose Apr 6, 2021 Issued
Array ( [id] => 17370953 [patent_doc_number] => 20220026005 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2022-01-27 [patent_title] => JOINT ASSEMBLY [patent_app_type] => utility [patent_app_number] => 17/194750 [patent_app_country] => US [patent_app_date] => 2021-03-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2055 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -5 [patent_words_short_claim] => 179 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17194750 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/194750
Joint assembly Mar 7, 2021 Issued
Array ( [id] => 16863510 [patent_doc_number] => 11022246 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2021-06-01 [patent_title] => Waste system securing strap assembly [patent_app_type] => utility [patent_app_number] => 17/160756 [patent_app_country] => US [patent_app_date] => 2021-01-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 9 [patent_no_of_words] => 2670 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [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] => 17160756 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/160756
Waste system securing strap assembly Jan 27, 2021 Issued
Array ( [id] => 17860267 [patent_doc_number] => 11441419 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2022-09-13 [patent_title] => Downhole telemetry system having a mud-activated power generator and method therefor [patent_app_type] => utility [patent_app_number] => 17/161227 [patent_app_country] => US [patent_app_date] => 2021-01-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 38 [patent_no_of_words] => 13985 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 116 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17161227 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/161227
Downhole telemetry system having a mud-activated power generator and method therefor Jan 27, 2021 Issued
Array ( [id] => 18779606 [patent_doc_number] => 11821304 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2023-11-21 [patent_title] => Downhole telemetry system having an electro-magnetic reciever and a mud pulser and method therefor [patent_app_type] => utility [patent_app_number] => 17/161192 [patent_app_country] => US [patent_app_date] => 2021-01-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 38 [patent_no_of_words] => 13985 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 227 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17161192 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/161192
Downhole telemetry system having an electro-magnetic reciever and a mud pulser and method therefor Jan 27, 2021 Issued
Array ( [id] => 16793731 [patent_doc_number] => 20210123548 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-29 [patent_title] => APPARATUS FOR CONNECTION AND SEALING OF UTILITY CONNECTIONS [patent_app_type] => utility [patent_app_number] => 17/141230 [patent_app_country] => US [patent_app_date] => 2021-01-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3523 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 130 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17141230 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/141230
Apparatus for connection and sealing of utility connections Jan 4, 2021 Issued
Array ( [id] => 16793733 [patent_doc_number] => 20210123550 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2021-04-29 [patent_title] => Fitting Device, Arrangement and Method [patent_app_type] => utility [patent_app_number] => 17/139011 [patent_app_country] => US [patent_app_date] => 2020-12-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4267 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -18 [patent_words_short_claim] => 166 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17139011 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/139011
Fitting Device, Arrangement and Method Dec 30, 2020 Abandoned
Array ( [id] => 18980933 [patent_doc_number] => 11906095 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-02-20 [patent_title] => Combined metal / plastic tubing apparatuses and methods of manufacture [patent_app_type] => utility [patent_app_number] => 17/135351 [patent_app_country] => US [patent_app_date] => 2020-12-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 4398 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 218 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17135351 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/135351
Combined metal / plastic tubing apparatuses and methods of manufacture Dec 27, 2020 Issued
Array ( [id] => 19292297 [patent_doc_number] => 12031647 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2024-07-09 [patent_title] => Wide range coupling [patent_app_type] => utility [patent_app_number] => 17/124912 [patent_app_country] => US [patent_app_date] => 2020-12-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 10052 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 175 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17124912 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/124912
Wide range coupling Dec 16, 2020 Issued
Array ( [id] => 18125544 [patent_doc_number] => 20230011161 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-01-12 [patent_title] => Mitigation of Buckling in Subsea Pipe-in-Pipe Systems [patent_app_type] => utility [patent_app_number] => 17/784612 [patent_app_country] => US [patent_app_date] => 2020-12-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4786 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 17 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 17784612 [rel_patent_id] =>[rel_patent_doc_number] =>)
17/784612
Mitigation of Buckling in Subsea Pipe-in-Pipe Systems Dec 10, 2020 Pending
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