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
07/427245 FUEL PELLETS FOR THERMONUCLEAR REACTIONS Oct 24, 1989 Abandoned
Array ( [id] => 2744329 [patent_doc_number] => 05037605 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-08-06 [patent_title] => 'Nuclear fuel assembly debris filter' [patent_app_type] => 1 [patent_app_number] => 7/421042 [patent_app_country] => US [patent_app_date] => 1989-10-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 11 [patent_no_of_words] => 2106 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 162 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/037/05037605.pdf [firstpage_image] =>[orig_patent_app_number] => 421042 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/421042
Nuclear fuel assembly debris filter Oct 12, 1989 Issued
Array ( [id] => 2841650 [patent_doc_number] => 05110534 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-05-05 [patent_title] => 'Power source for nuclear fusion reactor' [patent_app_type] => 1 [patent_app_number] => 7/420729 [patent_app_country] => US [patent_app_date] => 1989-10-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 2364 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 198 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/110/05110534.pdf [firstpage_image] =>[orig_patent_app_number] => 420729 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/420729
Power source for nuclear fusion reactor Oct 10, 1989 Issued
Array ( [id] => 2768343 [patent_doc_number] => 05075072 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-12-24 [patent_title] => 'High temperature control rod assembly' [patent_app_type] => 1 [patent_app_number] => 7/419683 [patent_app_country] => US [patent_app_date] => 1989-10-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 3649 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 204 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/075/05075072.pdf [firstpage_image] =>[orig_patent_app_number] => 419683 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/419683
High temperature control rod assembly Oct 10, 1989 Issued
07/419540 CONTROL BLADE FOR NUCLEAR REACTOR Oct 9, 1989 Abandoned
Array ( [id] => 2877225 [patent_doc_number] => 05108692 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-04-28 [patent_title] => 'Non-destructive testing of nuclear fuel rods' [patent_app_type] => 1 [patent_app_number] => 7/410784 [patent_app_country] => US [patent_app_date] => 1989-09-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 5873 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 601 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/108/05108692.pdf [firstpage_image] =>[orig_patent_app_number] => 410784 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/410784
Non-destructive testing of nuclear fuel rods Sep 21, 1989 Issued
Array ( [id] => 2719706 [patent_doc_number] => 05024806 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-06-18 [patent_title] => 'Enhanced debris filter bottom nozzle for a nuclear fuel assembly' [patent_app_type] => 1 [patent_app_number] => 7/410574 [patent_app_country] => US [patent_app_date] => 1989-09-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 7 [patent_no_of_words] => 3219 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 375 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/024/05024806.pdf [firstpage_image] =>[orig_patent_app_number] => 410574 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/410574
Enhanced debris filter bottom nozzle for a nuclear fuel assembly Sep 20, 1989 Issued
07/408003 BOILING WATER REACTOR SYSTEM WITH DOWNCOMER STEAM RELEASE CHANNEL Sep 14, 1989 Abandoned
Array ( [id] => 2637549 [patent_doc_number] => 04938918 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-07-03 [patent_title] => 'Element immersed in coolant of nuclear reactor' [patent_app_type] => 1 [patent_app_number] => 7/405597 [patent_app_country] => US [patent_app_date] => 1989-09-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 2637 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 290 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/938/04938918.pdf [firstpage_image] =>[orig_patent_app_number] => 405597 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/405597
Element immersed in coolant of nuclear reactor Sep 10, 1989 Issued
Array ( [id] => 2676826 [patent_doc_number] => 05066453 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-11-19 [patent_title] => 'Nuclear fuel assembly coolant control' [patent_app_type] => 1 [patent_app_number] => 7/389298 [patent_app_country] => US [patent_app_date] => 1989-08-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 2145 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 209 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/066/05066453.pdf [firstpage_image] =>[orig_patent_app_number] => 389298 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/389298
Nuclear fuel assembly coolant control Aug 2, 1989 Issued
Array ( [id] => 2641358 [patent_doc_number] => 04980121 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-12-25 [patent_title] => 'Protective device for lower end portion of a nuclear fuel rod cladding' [patent_app_type] => 1 [patent_app_number] => 7/386065 [patent_app_country] => US [patent_app_date] => 1989-07-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 9 [patent_no_of_words] => 2675 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 352 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/980/04980121.pdf [firstpage_image] =>[orig_patent_app_number] => 386065 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/386065
Protective device for lower end portion of a nuclear fuel rod cladding Jul 27, 1989 Issued
Array ( [id] => 2674628 [patent_doc_number] => 04947485 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-08-07 [patent_title] => 'Method for obtaining load-following capability in natural circulation, free-surface separation boiling water reactors' [patent_app_type] => 1 [patent_app_number] => 7/383787 [patent_app_country] => US [patent_app_date] => 1989-07-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 4882 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 252 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/947/04947485.pdf [firstpage_image] =>[orig_patent_app_number] => 383787 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/383787
Method for obtaining load-following capability in natural circulation, free-surface separation boiling water reactors Jul 23, 1989 Issued
07/374987 PROCESS AND APPARATUS FOR THE DETECTION OF SUBSTANCES AND IN PARTICULAR EXPLOSIVES BY NEUTRON IRRADIATION THEREOF Jul 2, 1989 Abandoned
Array ( [id] => 2740154 [patent_doc_number] => 05002720 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-03-26 [patent_title] => 'Electret enabled thermal neutron flux detection and measurement' [patent_app_type] => 1 [patent_app_number] => 7/374129 [patent_app_country] => US [patent_app_date] => 1989-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 5625 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 206 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/002/05002720.pdf [firstpage_image] =>[orig_patent_app_number] => 374129 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/374129
Electret enabled thermal neutron flux detection and measurement Jun 29, 1989 Issued
Array ( [id] => 2891848 [patent_doc_number] => 05183626 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-02-02 [patent_title] => 'Control cluster including demountable fuel for a nuclear fuel assembly' [patent_app_type] => 1 [patent_app_number] => 7/372494 [patent_app_country] => US [patent_app_date] => 1989-06-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 3410 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 308 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/183/05183626.pdf [firstpage_image] =>[orig_patent_app_number] => 372494 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/372494
Control cluster including demountable fuel for a nuclear fuel assembly Jun 27, 1989 Issued
07/367534 EXPLOSIVE DETECTION SYSTEM USING AN ARTIFICIAL NEURAL SYSTEM Jun 15, 1989 Abandoned
Array ( [id] => 2582727 [patent_doc_number] => 04963315 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-10-16 [patent_title] => 'Low level detector monitor' [patent_app_type] => 1 [patent_app_number] => 7/358755 [patent_app_country] => US [patent_app_date] => 1989-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2847 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 134 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/963/04963315.pdf [firstpage_image] =>[orig_patent_app_number] => 358755 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/358755
Low level detector monitor May 29, 1989 Issued
Array ( [id] => 2628809 [patent_doc_number] => 04976911 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-12-11 [patent_title] => 'Nuclear reactivity control using laser induced polarization' [patent_app_type] => 1 [patent_app_number] => 7/357248 [patent_app_country] => US [patent_app_date] => 1989-05-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 3149 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 155 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/976/04976911.pdf [firstpage_image] =>[orig_patent_app_number] => 357248 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/357248
Nuclear reactivity control using laser induced polarization May 25, 1989 Issued
Array ( [id] => 2665907 [patent_doc_number] => 05034183 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-07-23 [patent_title] => 'Apparatus for colliding nuclear particle beams using ring magnets' [patent_app_type] => 1 [patent_app_number] => 7/355930 [patent_app_country] => US [patent_app_date] => 1989-05-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 2285 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 330 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/034/05034183.pdf [firstpage_image] =>[orig_patent_app_number] => 355930 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/355930
Apparatus for colliding nuclear particle beams using ring magnets May 22, 1989 Issued
07/355808 REACTOR POWER MEASURING METHOD May 21, 1989 Abandoned
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