Search

Hoang C. Dang

Examiner (ID: 17143)

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

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 354979 [patent_doc_number] => 07487831 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2009-02-10 [patent_title] => 'Downhole surge pressure reduction and filtering apparatus' [patent_app_type] => utility [patent_app_number] => 11/778258 [patent_app_country] => US [patent_app_date] => 2007-07-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 41 [patent_no_of_words] => 7228 [patent_no_of_claims] => 37 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 66 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/487/07487831.pdf [firstpage_image] =>[orig_patent_app_number] => 11778258 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/778258
Downhole surge pressure reduction and filtering apparatus Jul 15, 2007 Issued
Array ( [id] => 329145 [patent_doc_number] => 07510008 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2009-03-31 [patent_title] => 'Method and apparatus for decreasing drag force of trigger mechanism' [patent_app_type] => utility [patent_app_number] => 11/778441 [patent_app_country] => US [patent_app_date] => 2007-07-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 10 [patent_no_of_words] => 2654 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 203 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/510/07510008.pdf [firstpage_image] =>[orig_patent_app_number] => 11778441 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/778441
Method and apparatus for decreasing drag force of trigger mechanism Jul 15, 2007 Issued
Array ( [id] => 4799934 [patent_doc_number] => 20080011521 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2008-01-17 [patent_title] => 'Retaining Element for a Jack Element' [patent_app_type] => utility [patent_app_number] => 11/774645 [patent_app_country] => US [patent_app_date] => 2007-07-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3516 [patent_no_of_claims] => 20 [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/A1/0011/20080011521.pdf [firstpage_image] =>[orig_patent_app_number] => 11774645 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/774645
Retaining element for a jack element Jul 8, 2007 Issued
Array ( [id] => 68550 [patent_doc_number] => 07753144 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2010-07-13 [patent_title] => 'Drill bit with a retained jack element' [patent_app_type] => utility [patent_app_number] => 11/774647 [patent_app_country] => US [patent_app_date] => 2007-07-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 25 [patent_no_of_words] => 6710 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/753/07753144.pdf [firstpage_image] =>[orig_patent_app_number] => 11774647 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/774647
Drill bit with a retained jack element Jul 8, 2007 Issued
Array ( [id] => 5293175 [patent_doc_number] => 20090008101 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2009-01-08 [patent_title] => 'Method of Producing a Low Pressure Well' [patent_app_type] => utility [patent_app_number] => 11/774361 [patent_app_country] => US [patent_app_date] => 2007-07-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2413 [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/A1/0008/20090008101.pdf [firstpage_image] =>[orig_patent_app_number] => 11774361 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/774361
Method of Producing a Low Pressure Well Jul 5, 2007 Abandoned
Array ( [id] => 5293174 [patent_doc_number] => 20090008100 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2009-01-08 [patent_title] => 'Fixed-point packoff element with primary seal test capability' [patent_app_type] => utility [patent_app_number] => 11/824691 [patent_app_country] => US [patent_app_date] => 2007-07-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 3234 [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/A1/0008/20090008100.pdf [firstpage_image] =>[orig_patent_app_number] => 11824691 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/824691
Fixed-point packoff element with primary seal test capability Jul 1, 2007 Issued
Array ( [id] => 552744 [patent_doc_number] => 07464772 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2008-12-16 [patent_title] => 'Downhole pressure pulse activated by jack element' [patent_app_type] => utility [patent_app_number] => 11/766707 [patent_app_country] => US [patent_app_date] => 2007-06-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 12 [patent_no_of_words] => 5501 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/464/07464772.pdf [firstpage_image] =>[orig_patent_app_number] => 11766707 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/766707
Downhole pressure pulse activated by jack element Jun 20, 2007 Issued
Array ( [id] => 4560655 [patent_doc_number] => 07823662 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2010-11-02 [patent_title] => 'Hydrocarbon recovery drill string apparatus, subterranean hydrocarbon recovery drilling methods, and subterranean hydrocarbon recovery methods' [patent_app_type] => utility [patent_app_number] => 11/820721 [patent_app_country] => US [patent_app_date] => 2007-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 9 [patent_no_of_words] => 5634 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 160 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/823/07823662.pdf [firstpage_image] =>[orig_patent_app_number] => 11820721 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/820721
Hydrocarbon recovery drill string apparatus, subterranean hydrocarbon recovery drilling methods, and subterranean hydrocarbon recovery methods Jun 19, 2007 Issued
Array ( [id] => 4756096 [patent_doc_number] => 20080308321 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2008-12-18 [patent_title] => 'Interchangeable bearing blocks for drill bits, and drill bits including same' [patent_app_type] => utility [patent_app_number] => 11/818820 [patent_app_country] => US [patent_app_date] => 2007-06-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 12 [patent_no_of_words] => 7752 [patent_no_of_claims] => 59 [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/A1/0308/20080308321.pdf [firstpage_image] =>[orig_patent_app_number] => 11818820 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/818820
Interchangeable bearing blocks for drill bits, and drill bits including same Jun 13, 2007 Issued
Array ( [id] => 4946403 [patent_doc_number] => 20080302529 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2008-12-11 [patent_title] => 'Multi-zone formation fluid evaluation system and method for use of same' [patent_app_type] => utility [patent_app_number] => 11/811761 [patent_app_country] => US [patent_app_date] => 2007-06-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 7248 [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/A1/0302/20080302529.pdf [firstpage_image] =>[orig_patent_app_number] => 11811761 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/811761
Multi-zone formation fluid evaluation system and method for use of same Jun 10, 2007 Abandoned
Array ( [id] => 223893 [patent_doc_number] => 07604074 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2009-10-20 [patent_title] => 'Cutting elements and bits incorporating the same' [patent_app_type] => utility [patent_app_number] => 11/811671 [patent_app_country] => US [patent_app_date] => 2007-06-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 10 [patent_no_of_words] => 4077 [patent_no_of_claims] => 26 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 141 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/604/07604074.pdf [firstpage_image] =>[orig_patent_app_number] => 11811671 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/811671
Cutting elements and bits incorporating the same Jun 10, 2007 Issued
Array ( [id] => 51053 [patent_doc_number] => 07766086 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2010-08-03 [patent_title] => 'Fluid actuated circulating sub' [patent_app_type] => utility [patent_app_number] => 11/811301 [patent_app_country] => US [patent_app_date] => 2007-06-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 5851 [patent_no_of_claims] => 29 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 161 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/766/07766086.pdf [firstpage_image] =>[orig_patent_app_number] => 11811301 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/811301
Fluid actuated circulating sub Jun 7, 2007 Issued
Array ( [id] => 5007538 [patent_doc_number] => 20070278015 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2007-12-06 [patent_title] => 'Cutting Element Having Asymmetrical Crest For Roller Cone Drill Bit' [patent_app_type] => utility [patent_app_number] => 11/758341 [patent_app_country] => US [patent_app_date] => 2007-06-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 8986 [patent_no_of_claims] => 44 [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/A1/0278/20070278015.pdf [firstpage_image] =>[orig_patent_app_number] => 11758341 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/758341
Cutting element having asymmetrical crest for roller cone drill bit Jun 4, 2007 Issued
Array ( [id] => 5059744 [patent_doc_number] => 20070221380 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2007-09-27 [patent_title] => 'SURFACE CONTROLLED SUBSURFACE LATERAL BRANCH SAFETY VALVE' [patent_app_type] => utility [patent_app_number] => 11/753000 [patent_app_country] => US [patent_app_date] => 2007-05-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 7098 [patent_no_of_claims] => 7 [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/A1/0221/20070221380.pdf [firstpage_image] =>[orig_patent_app_number] => 11753000 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/753000
Surface controlled subsurface lateral branch safety valve May 23, 2007 Issued
Array ( [id] => 321378 [patent_doc_number] => 07516791 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2009-04-14 [patent_title] => 'Configurable wellbore zone isolation system and related systems' [patent_app_type] => utility [patent_app_number] => 11/753411 [patent_app_country] => US [patent_app_date] => 2007-05-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 8 [patent_no_of_words] => 5258 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 82 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/516/07516791.pdf [firstpage_image] =>[orig_patent_app_number] => 11753411 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/753411
Configurable wellbore zone isolation system and related systems May 23, 2007 Issued
Array ( [id] => 4974161 [patent_doc_number] => 20070215390 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2007-09-20 [patent_title] => 'NOVEL BITS AND CUTTING STRUCTURES' [patent_app_type] => utility [patent_app_number] => 11/752151 [patent_app_country] => US [patent_app_date] => 2007-05-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 6037 [patent_no_of_claims] => 47 [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/A1/0215/20070215390.pdf [firstpage_image] =>[orig_patent_app_number] => 11752151 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/752151
NOVEL BITS AND CUTTING STRUCTURES May 21, 2007 Abandoned
Array ( [id] => 89394 [patent_doc_number] => 07730956 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2010-06-08 [patent_title] => 'Downhole pressure balanced electrical connections' [patent_app_type] => utility [patent_app_number] => 11/751696 [patent_app_country] => US [patent_app_date] => 2007-05-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 9 [patent_no_of_words] => 4516 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/730/07730956.pdf [firstpage_image] =>[orig_patent_app_number] => 11751696 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/751696
Downhole pressure balanced electrical connections May 21, 2007 Issued
Array ( [id] => 5025753 [patent_doc_number] => 20070267199 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2007-11-22 [patent_title] => 'APPARATUS AND METHODS TO PROTECT CONNECTIONS' [patent_app_type] => utility [patent_app_number] => 11/751841 [patent_app_country] => US [patent_app_date] => 2007-05-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 4246 [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/A1/0267/20070267199.pdf [firstpage_image] =>[orig_patent_app_number] => 11751841 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/751841
Apparatus and methods to protect connections May 21, 2007 Issued
Array ( [id] => 284564 [patent_doc_number] => 07549489 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2009-06-23 [patent_title] => 'Jack element with a stop-off' [patent_app_type] => utility [patent_app_number] => 11/750700 [patent_app_country] => US [patent_app_date] => 2007-05-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 14 [patent_no_of_words] => 3704 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 70 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/549/07549489.pdf [firstpage_image] =>[orig_patent_app_number] => 11750700 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/750700
Jack element with a stop-off May 17, 2007 Issued
Array ( [id] => 219487 [patent_doc_number] => 07607481 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2009-10-27 [patent_title] => 'Method and apparatus for dropping a pump down plug or ball' [patent_app_type] => utility [patent_app_number] => 11/749591 [patent_app_country] => US [patent_app_date] => 2007-05-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 19 [patent_no_of_words] => 3475 [patent_no_of_claims] => 33 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 249 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/607/07607481.pdf [firstpage_image] =>[orig_patent_app_number] => 11749591 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/749591
Method and apparatus for dropping a pump down plug or ball May 15, 2007 Issued
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