Search

Richard K. Chang

Examiner (ID: 15304, Phone: (571)270-3368 , Office: P/2464 )

Most Active Art Unit
2464
Art Unit(s)
2663, 2464, 2616
Total Applications
302
Issued Applications
252
Pending Applications
10
Abandoned Applications
46

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 8093877 [patent_doc_number] => 20120082544 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-04-05 [patent_title] => 'GIRDER FOR SUPPORTING A TIDAL TURBINE FAIRING AND TIDAL TURBINE COMPRISING SUCH A GIRDER' [patent_app_type] => utility [patent_app_number] => 13/247130 [patent_app_country] => US [patent_app_date] => 2011-09-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 4273 [patent_no_of_claims] => 11 [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/A1/0082/20120082544.pdf [firstpage_image] =>[orig_patent_app_number] => 13247130 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/247130
Girder for supporting a tidal turbine fairing and tidal turbine comprising such a girder Sep 27, 2011 Issued
Array ( [id] => 8707349 [patent_doc_number] => 20130064638 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2013-03-14 [patent_title] => 'Boundary Layer Blowing Using Steam Seal Leakage Flow' [patent_app_type] => utility [patent_app_number] => 13/227574 [patent_app_country] => US [patent_app_date] => 2011-09-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 2898 [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] => 13227574 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/227574
Boundary Layer Blowing Using Steam Seal Leakage Flow Sep 7, 2011 Abandoned
Array ( [id] => 7817263 [patent_doc_number] => 20120063883 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-03-15 [patent_title] => 'METHODS AND DEVICES FOR LOW SPEED LOW TORQUE TESTING OF A ROTOR IN A TURBOMACHINERY' [patent_app_type] => utility [patent_app_number] => 13/226069 [patent_app_country] => US [patent_app_date] => 2011-09-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 14 [patent_no_of_words] => 4940 [patent_no_of_claims] => 10 [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/A1/0063/20120063883.pdf [firstpage_image] =>[orig_patent_app_number] => 13226069 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/226069
Methods and devices for low speed low torque testing of a rotor in a turbomachinery Sep 5, 2011 Issued
Array ( [id] => 8696757 [patent_doc_number] => 20130058766 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2013-03-07 [patent_title] => 'Systems, Methods, and Apparatus for a Labyrinth Seal' [patent_app_type] => utility [patent_app_number] => 13/226122 [patent_app_country] => US [patent_app_date] => 2011-09-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 2929 [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] =>[firstpage_image] =>[orig_patent_app_number] => 13226122 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/226122
Systems, methods, and apparatus for a labyrinth seal Sep 5, 2011 Issued
Array ( [id] => 10542103 [patent_doc_number] => 09267218 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2016-02-23 [patent_title] => 'Protective coating for titanium last stage buckets' [patent_app_type] => utility [patent_app_number] => 13/224628 [patent_app_country] => US [patent_app_date] => 2011-09-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3655 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 162 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13224628 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/224628
Protective coating for titanium last stage buckets Sep 1, 2011 Issued
Array ( [id] => 11141971 [patent_doc_number] => 09377027 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2016-06-28 [patent_title] => 'Vertical double-suction pump having beneficial axial thrust' [patent_app_type] => utility [patent_app_number] => 13/207473 [patent_app_country] => US [patent_app_date] => 2011-08-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 1937 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 322 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13207473 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/207473
Vertical double-suction pump having beneficial axial thrust Aug 10, 2011 Issued
Array ( [id] => 10020085 [patent_doc_number] => 09062561 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2015-06-23 [patent_title] => 'Endwall component for a turbine stage of a gas turbine engine' [patent_app_type] => utility [patent_app_number] => 13/207784 [patent_app_country] => US [patent_app_date] => 2011-08-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 14 [patent_no_of_words] => 3998 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [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] => 13207784 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/207784
Endwall component for a turbine stage of a gas turbine engine Aug 10, 2011 Issued
Array ( [id] => 8658914 [patent_doc_number] => 20130039743 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2013-02-14 [patent_title] => 'METHOD AND APPARATUS FOR MEASURING TURBINE SHELL CLEARANCE' [patent_app_type] => utility [patent_app_number] => 13/207536 [patent_app_country] => US [patent_app_date] => 2011-08-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 4632 [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] =>[firstpage_image] =>[orig_patent_app_number] => 13207536 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/207536
Method and apparatus for measuring turbine shell clearance Aug 10, 2011 Issued
Array ( [id] => 8323325 [patent_doc_number] => 20120195738 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-08-02 [patent_title] => 'SHOCKPROOF FAN APPARATUS' [patent_app_type] => utility [patent_app_number] => 13/207414 [patent_app_country] => US [patent_app_date] => 2011-08-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 755 [patent_no_of_claims] => 13 [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] =>[firstpage_image] =>[orig_patent_app_number] => 13207414 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/207414
SHOCKPROOF FAN APPARATUS Aug 10, 2011 Abandoned
Array ( [id] => 8312430 [patent_doc_number] => 20120189452 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-07-26 [patent_title] => ' Impeller Attachment Method' [patent_app_type] => utility [patent_app_number] => 13/186647 [patent_app_country] => US [patent_app_date] => 2011-07-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2678 [patent_no_of_claims] => 9 [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] =>[firstpage_image] =>[orig_patent_app_number] => 13186647 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/186647
Impeller Attachment Method Jul 19, 2011 Abandoned
Array ( [id] => 8611778 [patent_doc_number] => 20130017090 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2013-01-17 [patent_title] => 'SCALLOP CURVATURE FOR RADIAL TURBINE WHEEL' [patent_app_type] => utility [patent_app_number] => 13/179634 [patent_app_country] => US [patent_app_date] => 2011-07-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 2290 [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] =>[firstpage_image] =>[orig_patent_app_number] => 13179634 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/179634
Scallop curvature for radial turbine wheel Jul 10, 2011 Issued
Array ( [id] => 9760957 [patent_doc_number] => 08845271 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2014-09-30 [patent_title] => 'Turbocharger bearing system' [patent_app_type] => utility [patent_app_number] => 13/134118 [patent_app_country] => US [patent_app_date] => 2011-05-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3008 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 244 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13134118 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/134118
Turbocharger bearing system May 30, 2011 Issued
Array ( [id] => 8220527 [patent_doc_number] => 20120134824 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-05-31 [patent_title] => 'Lightweight, Collapsible Axial Wind Generator' [patent_app_type] => utility [patent_app_number] => 13/149763 [patent_app_country] => US [patent_app_date] => 2011-05-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 22 [patent_figures_cnt] => 22 [patent_no_of_words] => 4721 [patent_no_of_claims] => 2 [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] => 13149763 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/149763
Lightweight, Collapsible Axial Wind Generator May 30, 2011 Abandoned
Array ( [id] => 8501888 [patent_doc_number] => 20120301297 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2012-11-29 [patent_title] => 'Fluid turbine device for power generation' [patent_app_type] => utility [patent_app_number] => 13/134068 [patent_app_country] => US [patent_app_date] => 2011-05-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3586 [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] =>[firstpage_image] =>[orig_patent_app_number] => 13134068 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/134068
Fluid turbine device for power generation May 27, 2011 Abandoned
Array ( [id] => 7579530 [patent_doc_number] => 20110293413 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2011-12-01 [patent_title] => 'Ceiling fixture protection system and method' [patent_app_type] => utility [patent_app_number] => 13/134070 [patent_app_country] => US [patent_app_date] => 2011-05-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 3051 [patent_no_of_claims] => 13 [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/A1/0293/20110293413.pdf [firstpage_image] =>[orig_patent_app_number] => 13134070 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/134070
Ceiling fixture protection system and method May 27, 2011 Issued
Array ( [id] => 10836772 [patent_doc_number] => 08864440 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2014-10-21 [patent_title] => 'Wind sail turbine' [patent_app_type] => utility [patent_app_number] => 13/134049 [patent_app_country] => US [patent_app_date] => 2011-05-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 10 [patent_no_of_words] => 2557 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 208 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13134049 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/134049
Wind sail turbine May 26, 2011 Issued
Array ( [id] => 9426311 [patent_doc_number] => 08702375 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2014-04-22 [patent_title] => 'Turbine stator vane' [patent_app_type] => utility [patent_app_number] => 13/111113 [patent_app_country] => US [patent_app_date] => 2011-05-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 9 [patent_no_of_words] => 2008 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 134 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13111113 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/111113
Turbine stator vane May 18, 2011 Issued
Array ( [id] => 7580530 [patent_doc_number] => 20110294413 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2011-12-01 [patent_title] => 'PORTABLE AIR MOVING DEVICE WITH MULTI-DIRECTIONAL GRILL' [patent_app_type] => utility [patent_app_number] => 13/111250 [patent_app_country] => US [patent_app_date] => 2011-05-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 2880 [patent_no_of_claims] => 24 [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/A1/0294/20110294413.pdf [firstpage_image] =>[orig_patent_app_number] => 13111250 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/111250
PORTABLE AIR MOVING DEVICE WITH MULTI-DIRECTIONAL GRILL May 18, 2011 Abandoned
Array ( [id] => 9215499 [patent_doc_number] => 08628294 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2014-01-14 [patent_title] => 'Turbine stator vane with purge air channel' [patent_app_type] => utility [patent_app_number] => 13/111106 [patent_app_country] => US [patent_app_date] => 2011-05-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 10 [patent_no_of_words] => 2287 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 111 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 13111106 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/111106
Turbine stator vane with purge air channel May 18, 2011 Issued
Array ( [id] => 8787712 [patent_doc_number] => 20130104681 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2013-05-02 [patent_title] => 'GEARBOX IN A TURBINE ENGINE' [patent_app_type] => utility [patent_app_number] => 13/699949 [patent_app_country] => US [patent_app_date] => 2011-05-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2229 [patent_no_of_claims] => 12 [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] =>[firstpage_image] =>[orig_patent_app_number] => 13699949 [rel_patent_id] =>[rel_patent_doc_number] =>)
13/699949
GEARBOX IN A TURBINE ENGINE May 16, 2011 Abandoned
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