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] => 8498834 [patent_doc_number] => 20120298242 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-11-29 [patent_title] => 'TUBE WITH AN IMPROVED CONNECTION PREFERABLY FOR AN AIR CONDITIONING SYSTEM' [patent_app_type] => utility [patent_app_number] => 13/514089 [patent_app_country] => US [patent_app_date] => 2010-12-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 1932 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 5 [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] => 13514089 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/514089
TUBE WITH AN IMPROVED CONNECTION PREFERABLY FOR AN AIR CONDITIONING SYSTEM Dec 9, 2010 Abandoned
Array ( [id] => 9868125 [patent_doc_number] => 08955886 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2015-02-17 [patent_title] => 'Hydraulic ducts and connecting assemblies' [patent_app_type] => utility [patent_app_number] => 12/962718 [patent_app_country] => US [patent_app_date] => 2010-12-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2076 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 295 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 12962718 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/962718
Hydraulic ducts and connecting assemblies Dec 7, 2010 Issued
Array ( [id] => 6137826 [patent_doc_number] => 20110127765 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2011-06-02 [patent_title] => 'CLAMPING COLLAR FOR A DUCT, DUCT PROVIDED THEREWITH AND METHOD FOR BLOCKING THE ROTATION OF THE COLLAR ON THIS DUCT' [patent_app_type] => utility [patent_app_number] => 12/954817 [patent_app_country] => US [patent_app_date] => 2010-11-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2644 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0127/20110127765.pdf [firstpage_image] =>[orig_patent_app_number] => 12954817 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/954817
Polymer duct having clamping collar Nov 25, 2010 Issued
Array ( [id] => 6208661 [patent_doc_number] => 20110133449 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2011-06-09 [patent_title] => 'THREADED JOINT SEALED TO INTERNAL AND EXTERNAL PRESSURES' [patent_app_type] => utility [patent_app_number] => 12/954588 [patent_app_country] => US [patent_app_date] => 2010-11-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 6254 [patent_no_of_claims] => 20 [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] => publications/A1/0133/20110133449.pdf [firstpage_image] =>[orig_patent_app_number] => 12954588 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/954588
Threaded joint sealed to internal and external pressures Nov 23, 2010 Issued
Array ( [id] => 8742746 [patent_doc_number] => 20130082463 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2013-04-04 [patent_title] => 'PIPE COUPLING' [patent_app_type] => utility [patent_app_number] => 13/505090 [patent_app_country] => US [patent_app_date] => 2010-11-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 3324 [patent_no_of_claims] => 25 [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] => 13505090 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/505090
Pipe coupling Oct 31, 2010 Issued
Array ( [id] => 8166737 [patent_doc_number] => 20120104747 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-05-03 [patent_title] => 'COMPLIANT SEALING JOINT' [patent_app_type] => utility [patent_app_number] => 12/915778 [patent_app_country] => US [patent_app_date] => 2010-10-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 1276 [patent_no_of_claims] => 20 [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] => publications/A1/0104/20120104747.pdf [firstpage_image] =>[orig_patent_app_number] => 12915778 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/915778
COMPLIANT SEALING JOINT Oct 28, 2010 Abandoned
Array ( [id] => 8344063 [patent_doc_number] => 20120204988 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-08-16 [patent_title] => ' PLUMBING FITTING TO CONTROL PEST INFESTATIONS IN BUILDINGS, ESPECIALLY TERMITES' [patent_app_type] => utility [patent_app_number] => 13/503469 [patent_app_country] => US [patent_app_date] => 2010-10-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 12 [patent_no_of_words] => 4692 [patent_no_of_claims] => 14 [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] => 13503469 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/503469
PLUMBING FITTING TO CONTROL PEST INFESTATIONS IN BUILDINGS, ESPECIALLY TERMITES Oct 21, 2010 Abandoned
Array ( [id] => 10077992 [patent_doc_number] => 09115836 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2015-08-25 [patent_title] => 'Tube retainer' [patent_app_type] => utility [patent_app_number] => 12/907627 [patent_app_country] => US [patent_app_date] => 2010-10-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 10 [patent_no_of_words] => 2980 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 404 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 12907627 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/907627
Tube retainer Oct 18, 2010 Issued
Array ( [id] => 6193295 [patent_doc_number] => 20110025049 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2011-02-03 [patent_title] => 'APPARATUS FOR CONNECTING PIPES' [patent_app_type] => utility [patent_app_number] => 12/905909 [patent_app_country] => US [patent_app_date] => 2010-10-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 12 [patent_no_of_words] => 3468 [patent_no_of_claims] => 18 [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] => publications/A1/0025/20110025049.pdf [firstpage_image] =>[orig_patent_app_number] => 12905909 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/905909
APPARATUS FOR CONNECTING PIPES Oct 14, 2010 Abandoned
Array ( [id] => 8332123 [patent_doc_number] => 20120198826 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-08-09 [patent_title] => 'CONNECTOR SYSTEM FOR EXHAUST EXTRACTION SYSTEM' [patent_app_type] => utility [patent_app_number] => 13/502089 [patent_app_country] => US [patent_app_date] => 2010-10-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 4577 [patent_no_of_claims] => 15 [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] => 13502089 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/502089
Connector system for exhaust extraction system Oct 13, 2010 Issued
Array ( [id] => 8724258 [patent_doc_number] => 08403369 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2013-03-26 [patent_title] => 'Connector for connecting a tank truck to an underground oil depot' [patent_app_type] => utility [patent_app_number] => 12/904208 [patent_app_country] => US [patent_app_date] => 2010-10-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 8 [patent_no_of_words] => 2522 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 240 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 12904208 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/904208
Connector for connecting a tank truck to an underground oil depot Oct 13, 2010 Issued
Array ( [id] => 10829704 [patent_doc_number] => 08857861 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2014-10-14 [patent_title] => 'Self-restrained pipe joint system' [patent_app_type] => utility [patent_app_number] => 12/902888 [patent_app_country] => US [patent_app_date] => 2010-10-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 11 [patent_no_of_words] => 4467 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 278 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 12902888 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/902888
Self-restrained pipe joint system Oct 11, 2010 Issued
Array ( [id] => 5941067 [patent_doc_number] => 20110101687 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2011-05-05 [patent_title] => 'Coupling' [patent_app_type] => utility [patent_app_number] => 12/898059 [patent_app_country] => US [patent_app_date] => 2010-10-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 5676 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0101/20110101687.pdf [firstpage_image] =>[orig_patent_app_number] => 12898059 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/898059
Coupling Oct 4, 2010 Abandoned
Array ( [id] => 12212900 [patent_doc_number] => 09909698 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2018-03-06 [patent_title] => 'Spherical flange joint' [patent_app_type] => utility [patent_app_number] => 12/893959 [patent_app_country] => US [patent_app_date] => 2010-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 5608 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 242 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 12893959 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/893959
Spherical flange joint Sep 28, 2010 Issued
Array ( [id] => 13885761 [patent_doc_number] => 10195414 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2019-02-05 [patent_title] => Lockable quick coupling [patent_app_type] => utility [patent_app_number] => 13/499207 [patent_app_country] => US [patent_app_date] => 2010-09-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 2999 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 286 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13499207 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/499207
Lockable quick coupling Sep 22, 2010 Issued
Array ( [id] => 6131030 [patent_doc_number] => 20110006521 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2011-01-13 [patent_title] => 'FITTING FOR METAL PIPE AND TUBING' [patent_app_type] => utility [patent_app_number] => 12/886634 [patent_app_country] => US [patent_app_date] => 2010-09-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 14713 [patent_no_of_claims] => 61 [patent_no_of_ind_claims] => 9 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0006/20110006521.pdf [firstpage_image] =>[orig_patent_app_number] => 12886634 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/886634
FITTING FOR METAL PIPE AND TUBING Sep 20, 2010 Abandoned
Array ( [id] => 6084073 [patent_doc_number] => 20110215566 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2011-09-08 [patent_title] => 'Flexible Assembly for Sprinklers' [patent_app_type] => utility [patent_app_number] => 12/877357 [patent_app_country] => US [patent_app_date] => 2010-09-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 5316 [patent_no_of_claims] => 33 [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] => publications/A1/0215/20110215566.pdf [firstpage_image] =>[orig_patent_app_number] => 12877357 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/877357
Flexible assembly for sprinklers Sep 7, 2010 Issued
Array ( [id] => 6198974 [patent_doc_number] => 20110061760 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2011-03-17 [patent_title] => 'CONDUITS AND COUPLING SYSTEMS FOR TRENCHLESS APPLICATIONS' [patent_app_type] => utility [patent_app_number] => 12/877398 [patent_app_country] => US [patent_app_date] => 2010-09-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 10982 [patent_no_of_claims] => 20 [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] => publications/A1/0061/20110061760.pdf [firstpage_image] =>[orig_patent_app_number] => 12877398 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/877398
CONDUITS AND COUPLING SYSTEMS FOR TRENCHLESS APPLICATIONS Sep 7, 2010 Abandoned
Array ( [id] => 7787952 [patent_doc_number] => 20120049508 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-03-01 [patent_title] => 'HOSE CONNECTION STRUCTURE OF AIR MATTRESS' [patent_app_type] => utility [patent_app_number] => 12/868079 [patent_app_country] => US [patent_app_date] => 2010-08-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 2361 [patent_no_of_claims] => 3 [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] => publications/A1/0049/20120049508.pdf [firstpage_image] =>[orig_patent_app_number] => 12868079 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/868079
Hose connection structure of air mattress Aug 24, 2010 Issued
Array ( [id] => 6068084 [patent_doc_number] => 20110042939 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2011-02-24 [patent_title] => 'Swiveling Preconditioned Air Connector for Aircraft' [patent_app_type] => utility [patent_app_number] => 12/861298 [patent_app_country] => US [patent_app_date] => 2010-08-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 1839 [patent_no_of_claims] => 3 [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] => publications/A1/0042/20110042939.pdf [firstpage_image] =>[orig_patent_app_number] => 12861298 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/861298
Swiveling Preconditioned Air Connector for Aircraft Aug 22, 2010 Abandoned
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