Search

Richard K. Chang

Examiner (ID: 14488, Phone: (571)270-3368 , Office: P/2464 )

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

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 2711605 [patent_doc_number] => 05008068 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-04-16 [patent_title] => 'Plant comprising a nuclear reactor, more particularly a control rod system for nuclear reactor plant' [patent_app_type] => 1 [patent_app_number] => 7/264960 [patent_app_country] => US [patent_app_date] => 1988-09-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 10 [patent_no_of_words] => 3903 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 167 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/008/05008068.pdf [firstpage_image] =>[orig_patent_app_number] => 264960 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/264960
Plant comprising a nuclear reactor, more particularly a control rod system for nuclear reactor plant Sep 5, 1988 Issued
Array ( [id] => 2556911 [patent_doc_number] => 04857261 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-08-15 [patent_title] => 'Reactor vessel head area monitoring system' [patent_app_type] => 1 [patent_app_number] => 7/238380 [patent_app_country] => US [patent_app_date] => 1988-08-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 2527 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 102 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/857/04857261.pdf [firstpage_image] =>[orig_patent_app_number] => 238380 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/238380
Reactor vessel head area monitoring system Aug 30, 1988 Issued
Array ( [id] => 2604086 [patent_doc_number] => 04902467 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-20 [patent_title] => 'Non-destructive testing of nuclear fuel rods' [patent_app_type] => 1 [patent_app_number] => 7/238659 [patent_app_country] => US [patent_app_date] => 1988-08-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 5864 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 459 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/902/04902467.pdf [firstpage_image] =>[orig_patent_app_number] => 238659 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/238659
Non-destructive testing of nuclear fuel rods Aug 30, 1988 Issued
Array ( [id] => 2511786 [patent_doc_number] => 04863673 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-09-05 [patent_title] => 'Check valve test method for control rod drive' [patent_app_type] => 1 [patent_app_number] => 7/236830 [patent_app_country] => US [patent_app_date] => 1988-08-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 3152 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 275 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/863/04863673.pdf [firstpage_image] =>[orig_patent_app_number] => 236830 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/236830
Check valve test method for control rod drive Aug 25, 1988 Issued
Array ( [id] => 2689833 [patent_doc_number] => 05019322 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-05-28 [patent_title] => 'Gas cooled nuclear reactor with a pebble bed of spherical operating elements' [patent_app_type] => 1 [patent_app_number] => 7/233980 [patent_app_country] => US [patent_app_date] => 1988-08-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 6 [patent_no_of_words] => 2269 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 140 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/019/05019322.pdf [firstpage_image] =>[orig_patent_app_number] => 233980 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/233980
Gas cooled nuclear reactor with a pebble bed of spherical operating elements Aug 18, 1988 Issued
07/232970 RECONSTITUTABLE CONTROL ASSEMBLY HAVING REMOVABLE CONTROL RODS WITH DETACHABLE SPLIT UPPER END PLUGS Aug 16, 1988 Abandoned
Array ( [id] => 2584257 [patent_doc_number] => 04927592 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-05-22 [patent_title] => 'Reversed field pinch apparatus' [patent_app_type] => 1 [patent_app_number] => 7/218162 [patent_app_country] => US [patent_app_date] => 1988-07-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 10 [patent_no_of_words] => 2024 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/927/04927592.pdf [firstpage_image] =>[orig_patent_app_number] => 218162 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/218162
Reversed field pinch apparatus Jul 12, 1988 Issued
Array ( [id] => 2554422 [patent_doc_number] => 04853176 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-08-01 [patent_title] => 'Hafnium stainless steel absorber rod for control rod' [patent_app_type] => 1 [patent_app_number] => 7/215188 [patent_app_country] => US [patent_app_date] => 1988-07-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 6 [patent_no_of_words] => 2591 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 162 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/853/04853176.pdf [firstpage_image] =>[orig_patent_app_number] => 215188 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/215188
Hafnium stainless steel absorber rod for control rod Jul 4, 1988 Issued
Array ( [id] => 2564227 [patent_doc_number] => 04900507 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-13 [patent_title] => 'Nuclear fuel assembly debris filter bottom nozzle' [patent_app_type] => 1 [patent_app_number] => 7/211150 [patent_app_country] => US [patent_app_date] => 1988-06-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 10 [patent_no_of_words] => 3684 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 435 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/900/04900507.pdf [firstpage_image] =>[orig_patent_app_number] => 211150 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/211150
Nuclear fuel assembly debris filter bottom nozzle Jun 21, 1988 Issued
Array ( [id] => 2542408 [patent_doc_number] => 04810459 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-03-07 [patent_title] => 'Method and apparatus for determining true formation porosity from measurement-while-drilling neutron porosity measurement devices' [patent_app_type] => 1 [patent_app_number] => 7/211109 [patent_app_country] => US [patent_app_date] => 1988-06-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 2928 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 254 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/810/04810459.pdf [firstpage_image] =>[orig_patent_app_number] => 211109 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/211109
Method and apparatus for determining true formation porosity from measurement-while-drilling neutron porosity measurement devices Jun 20, 1988 Issued
Array ( [id] => 2518773 [patent_doc_number] => 04880559 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-11-14 [patent_title] => 'Ceric acid decontamination of nuclear reactors' [patent_app_type] => 1 [patent_app_number] => 7/208825 [patent_app_country] => US [patent_app_date] => 1988-06-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2917 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 130 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/880/04880559.pdf [firstpage_image] =>[orig_patent_app_number] => 208825 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/208825
Ceric acid decontamination of nuclear reactors Jun 14, 1988 Issued
Array ( [id] => 2663411 [patent_doc_number] => 04904443 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-27 [patent_title] => 'Control rod drive with upward removable drive internals' [patent_app_type] => 1 [patent_app_number] => 7/202864 [patent_app_country] => US [patent_app_date] => 1988-06-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 5908 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 236 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/904/04904443.pdf [firstpage_image] =>[orig_patent_app_number] => 202864 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/202864
Electrical adaptor Jun 7, 1988 Issued
Array ( [id] => 2663411 [patent_doc_number] => 04904443 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-27 [patent_title] => 'Control rod drive with upward removable drive internals' [patent_app_type] => 1 [patent_app_number] => 7/202864 [patent_app_country] => US [patent_app_date] => 1988-06-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 5908 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 236 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/904/04904443.pdf [firstpage_image] =>[orig_patent_app_number] => 202864 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/202864
Electrical adaptor Jun 7, 1988 Issued
Array ( [id] => 2663411 [patent_doc_number] => 04904443 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-27 [patent_title] => 'Control rod drive with upward removable drive internals' [patent_app_type] => 1 [patent_app_number] => 7/202864 [patent_app_country] => US [patent_app_date] => 1988-06-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 5908 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 236 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/904/04904443.pdf [firstpage_image] =>[orig_patent_app_number] => 202864 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/202864
Control rod drive with upward removable drive internals Jun 1, 1988 Issued
Array ( [id] => 2663411 [patent_doc_number] => 04904443 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-27 [patent_title] => 'Control rod drive with upward removable drive internals' [patent_app_type] => 1 [patent_app_number] => 7/202864 [patent_app_country] => US [patent_app_date] => 1988-06-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 7 [patent_no_of_words] => 5908 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 236 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/904/04904443.pdf [firstpage_image] =>[orig_patent_app_number] => 202864 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/202864
Control rod drive with upward removable drive internals Jun 1, 1988 Issued
Array ( [id] => 2521138 [patent_doc_number] => H0000599 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-03-07 [patent_title] => 'Apparatus and method for simulating material damage from a fusion reactor' [patent_app_type] => 7 [patent_app_number] => 7/196537 [patent_app_country] => US [patent_app_date] => 1988-05-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 3485 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 54 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/H0/000/H0000599.pdf [firstpage_image] =>[orig_patent_app_number] => 196537 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/196537
Apparatus and method for simulating material damage from a fusion reactor May 19, 1988 Issued
Array ( [id] => 2525286 [patent_doc_number] => 04839137 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-06-13 [patent_title] => 'Nuclear steam supply system and method of installation' [patent_app_type] => 1 [patent_app_number] => 7/195438 [patent_app_country] => US [patent_app_date] => 1988-05-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 17 [patent_no_of_words] => 2948 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 313 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/839/04839137.pdf [firstpage_image] =>[orig_patent_app_number] => 195438 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/195438
Nuclear steam supply system and method of installation May 15, 1988 Issued
Array ( [id] => 2547483 [patent_doc_number] => 04832905 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-05-23 [patent_title] => 'Lower end fitting debris collector' [patent_app_type] => 1 [patent_app_number] => 7/181805 [patent_app_country] => US [patent_app_date] => 1988-04-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 7 [patent_no_of_words] => 2191 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 169 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/832/04832905.pdf [firstpage_image] =>[orig_patent_app_number] => 181805 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/181805
Lower end fitting debris collector Apr 14, 1988 Issued
Array ( [id] => 2476030 [patent_doc_number] => 04882121 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-11-21 [patent_title] => 'Apparatus for the detection of E. G. explosive substances' [patent_app_type] => 1 [patent_app_number] => 7/175629 [patent_app_country] => US [patent_app_date] => 1988-03-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1862 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 121 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/882/04882121.pdf [firstpage_image] =>[orig_patent_app_number] => 175629 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/175629
Apparatus for the detection of E. G. explosive substances Mar 30, 1988 Issued
07/173786 CORE OF LIGHT-WATER REACTOR Mar 27, 1988 Abandoned
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