Search

Hoang C Dang

Examiner (ID: 12125)

Most Active Art Unit
3506
Art Unit(s)
3672, 3506, 3625, 2731
Total Applications
3000
Issued Applications
2548
Pending Applications
156
Abandoned Applications
295

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 4524879 [patent_doc_number] => RE042030 [patent_country] => US [patent_kind] => E1 [patent_issue_date] => 2011-01-18 [patent_title] => 'Critical velocity reduction in a gas well' [patent_app_type] => reissue [patent_app_number] => 12/492526 [patent_app_country] => US [patent_app_date] => 2009-06-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 3104 [patent_no_of_claims] => 44 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 54 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/RE/042/RE042030.pdf [firstpage_image] =>[orig_patent_app_number] => 12492526 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/492526
Critical velocity reduction in a gas well Jun 25, 2009 Issued
Array ( [id] => 6488090 [patent_doc_number] => 20100200236 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2010-08-12 [patent_title] => 'Method of Circulating While Retrieving Bottom Hole Assembly in Casing' [patent_app_type] => utility [patent_app_number] => 12/491966 [patent_app_country] => US [patent_app_date] => 2009-06-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 4645 [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] => publications/A1/0200/20100200236.pdf [firstpage_image] =>[orig_patent_app_number] => 12491966 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/491966
Method of circulating while retrieving bottom hole assembly in casing Jun 24, 2009 Issued
Array ( [id] => 5455581 [patent_doc_number] => 20090255733 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2009-10-15 [patent_title] => 'Lead the Bit Rotary Steerable System' [patent_app_type] => utility [patent_app_number] => 12/491149 [patent_app_country] => US [patent_app_date] => 2009-06-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 2870 [patent_no_of_claims] => 17 [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/A1/0255/20090255733.pdf [firstpage_image] =>[orig_patent_app_number] => 12491149 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/491149
Lead the bit rotary steerable system Jun 23, 2009 Issued
Array ( [id] => 5487753 [patent_doc_number] => 20090288824 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2009-11-26 [patent_title] => 'MULTI-ZONE FORMATION FLUID EVALUATION SYSTEM AND METHOD FOR USE OF SAME' [patent_app_type] => utility [patent_app_number] => 12/488539 [patent_app_country] => US [patent_app_date] => 2009-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 12 [patent_no_of_words] => 7883 [patent_no_of_claims] => 20 [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/A1/0288/20090288824.pdf [firstpage_image] =>[orig_patent_app_number] => 12488539 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/488539
MULTI-ZONE FORMATION FLUID EVALUATION SYSTEM AND METHOD FOR USE OF SAME Jun 19, 2009 Abandoned
Array ( [id] => 8434116 [patent_doc_number] => 08281882 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-10-09 [patent_title] => 'Jack element for a drill bit' [patent_app_type] => utility [patent_app_number] => 12/475344 [patent_app_country] => US [patent_app_date] => 2009-05-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 13 [patent_no_of_words] => 6286 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 129 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 12475344 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/475344
Jack element for a drill bit May 28, 2009 Issued
Array ( [id] => 30471 [patent_doc_number] => 07784550 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2010-08-31 [patent_title] => 'Downhole apparatus with a swellable connector' [patent_app_type] => utility [patent_app_number] => 12/470401 [patent_app_country] => US [patent_app_date] => 2009-05-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 14 [patent_no_of_words] => 9236 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 97 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/784/07784550.pdf [firstpage_image] =>[orig_patent_app_number] => 12470401 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/470401
Downhole apparatus with a swellable connector May 20, 2009 Issued
Array ( [id] => 181017 [patent_doc_number] => 07650951 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2010-01-26 [patent_title] => 'Resettable actuator for downhole tool' [patent_app_type] => utility [patent_app_number] => 12/424901 [patent_app_country] => US [patent_app_date] => 2009-04-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 22 [patent_figures_cnt] => 24 [patent_no_of_words] => 5256 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 58 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/650/07650951.pdf [firstpage_image] =>[orig_patent_app_number] => 12424901 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/424901
Resettable actuator for downhole tool Apr 15, 2009 Issued
Array ( [id] => 159769 [patent_doc_number] => 07669663 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2010-03-02 [patent_title] => 'Resettable actuator for downhole tool' [patent_app_type] => utility [patent_app_number] => 12/424853 [patent_app_country] => US [patent_app_date] => 2009-04-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 22 [patent_figures_cnt] => 24 [patent_no_of_words] => 5246 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 72 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/669/07669663.pdf [firstpage_image] =>[orig_patent_app_number] => 12424853 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/424853
Resettable actuator for downhole tool Apr 15, 2009 Issued
Array ( [id] => 5352575 [patent_doc_number] => 20090183919 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2009-07-23 [patent_title] => 'Downhole Percussive Tool with Alternating Pressure Differentials' [patent_app_type] => utility [patent_app_number] => 12/415188 [patent_app_country] => US [patent_app_date] => 2009-03-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 5027 [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/A1/0183/20090183919.pdf [firstpage_image] =>[orig_patent_app_number] => 12415188 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/415188
Downhole percussive tool with alternating pressure differentials Mar 30, 2009 Issued
Array ( [id] => 168364 [patent_doc_number] => 07661487 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2010-02-16 [patent_title] => 'Downhole percussive tool with alternating pressure differentials' [patent_app_type] => utility [patent_app_number] => 12/415315 [patent_app_country] => US [patent_app_date] => 2009-03-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 18 [patent_no_of_words] => 5178 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 116 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/661/07661487.pdf [firstpage_image] =>[orig_patent_app_number] => 12415315 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/415315
Downhole percussive tool with alternating pressure differentials Mar 30, 2009 Issued
Array ( [id] => 4429329 [patent_doc_number] => 07896091 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2011-03-01 [patent_title] => 'Convertible seal' [patent_app_type] => utility [patent_app_number] => 12/412650 [patent_app_country] => US [patent_app_date] => 2009-03-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 4020 [patent_no_of_claims] => 27 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 27 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/896/07896091.pdf [firstpage_image] =>[orig_patent_app_number] => 12412650 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/412650
Convertible seal Mar 26, 2009 Issued
Array ( [id] => 4453204 [patent_doc_number] => 07891417 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2011-02-22 [patent_title] => 'Completion apparatus for measuring streaming potentials and determining earth formation characteristics' [patent_app_type] => utility [patent_app_number] => 12/400241 [patent_app_country] => US [patent_app_date] => 2009-03-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 34 [patent_figures_cnt] => 34 [patent_no_of_words] => 10432 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 138 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/891/07891417.pdf [firstpage_image] =>[orig_patent_app_number] => 12400241 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/400241
Completion apparatus for measuring streaming potentials and determining earth formation characteristics Mar 8, 2009 Issued
Array ( [id] => 4627893 [patent_doc_number] => 08006770 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2011-08-30 [patent_title] => 'Expandable casing with enhanced collapse resistance and sealing capability' [patent_app_type] => utility [patent_app_number] => 12/371741 [patent_app_country] => US [patent_app_date] => 2009-02-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 2634 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 55 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/08/006/08006770.pdf [firstpage_image] =>[orig_patent_app_number] => 12371741 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/371741
Expandable casing with enhanced collapse resistance and sealing capability Feb 15, 2009 Issued
Array ( [id] => 4453208 [patent_doc_number] => 07891419 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2011-02-22 [patent_title] => 'Downhole well cleaning tool' [patent_app_type] => utility [patent_app_number] => 12/352101 [patent_app_country] => US [patent_app_date] => 2009-01-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 7 [patent_no_of_words] => 6067 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 368 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/891/07891419.pdf [firstpage_image] =>[orig_patent_app_number] => 12352101 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/352101
Downhole well cleaning tool Jan 11, 2009 Issued
Array ( [id] => 6450445 [patent_doc_number] => 20100089594 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2010-04-15 [patent_title] => 'METHOD AND APPARATUS FOR DROPPING A PUMP DOWN PLUG OR BALL' [patent_app_type] => utility [patent_app_number] => 12/349109 [patent_app_country] => US [patent_app_date] => 2009-01-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 24 [patent_figures_cnt] => 24 [patent_no_of_words] => 5976 [patent_no_of_claims] => 21 [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/A1/0089/20100089594.pdf [firstpage_image] =>[orig_patent_app_number] => 12349109 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/349109
Method and apparatus for dropping a pump down plug or ball Jan 5, 2009 Issued
Array ( [id] => 5261712 [patent_doc_number] => 20090114397 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2009-05-07 [patent_title] => 'HYBRID WELLHEAD SYSTEM AND METHOD OF USE' [patent_app_type] => utility [patent_app_number] => 12/347280 [patent_app_country] => US [patent_app_date] => 2008-12-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 21 [patent_figures_cnt] => 21 [patent_no_of_words] => 7299 [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/A1/0114/20090114397.pdf [firstpage_image] =>[orig_patent_app_number] => 12347280 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/347280
Hybrid wellhead system and method of use Dec 30, 2008 Issued
Array ( [id] => 5281818 [patent_doc_number] => 20090095491 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2009-04-16 [patent_title] => 'COILED TUBING/TOP DRIVE RIG AND METHOD' [patent_app_type] => utility [patent_app_number] => 12/337089 [patent_app_country] => US [patent_app_date] => 2008-12-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 13 [patent_no_of_words] => 7529 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 7 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0095/20090095491.pdf [firstpage_image] =>[orig_patent_app_number] => 12337089 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/337089
COILED TUBING/TOP DRIVE RIG AND METHOD Dec 16, 2008 Abandoned
Array ( [id] => 6396095 [patent_doc_number] => 20100147596 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2010-06-17 [patent_title] => 'Drillable Bit Nozzle Retainer with Interchangeable Nozzle Capability' [patent_app_type] => utility [patent_app_number] => 12/336241 [patent_app_country] => US [patent_app_date] => 2008-12-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 1177 [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/A1/0147/20100147596.pdf [firstpage_image] =>[orig_patent_app_number] => 12336241 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/336241
Drillable Bit Nozzle Retainer with Interchangeable Nozzle Capability Dec 15, 2008 Abandoned
Array ( [id] => 88927 [patent_doc_number] => 07735560 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2010-06-15 [patent_title] => 'Distortion compensation for rod piston bore in subsurface safety valves' [patent_app_type] => utility [patent_app_number] => 12/323152 [patent_app_country] => US [patent_app_date] => 2008-11-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 8 [patent_no_of_words] => 2175 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 59 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/735/07735560.pdf [firstpage_image] =>[orig_patent_app_number] => 12323152 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/323152
Distortion compensation for rod piston bore in subsurface safety valves Nov 24, 2008 Issued
Array ( [id] => 5524203 [patent_doc_number] => 20090194279 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2009-08-06 [patent_title] => 'DOWNHOLE SAMPLING TOOL AND METHOD FOR USING SAME' [patent_app_type] => utility [patent_app_number] => 12/277664 [patent_app_country] => US [patent_app_date] => 2008-11-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 7741 [patent_no_of_claims] => 20 [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/A1/0194/20090194279.pdf [firstpage_image] =>[orig_patent_app_number] => 12277664 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/277664
Downhole sampling tool and method for using same Nov 24, 2008 Issued
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