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
07/298159 PNEUMATIC SAFETY EQUIPMENT TO PREVENT THE OVERHEATING OF NUCLEAR REACTORS Jan 15, 1989 Abandoned
Array ( [id] => 2523835 [patent_doc_number] => 04888150 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-12-19 [patent_title] => 'Control rod for nuclear reactors' [patent_app_type] => 1 [patent_app_number] => 7/291254 [patent_app_country] => US [patent_app_date] => 1988-12-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 2281 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 116 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/888/04888150.pdf [firstpage_image] =>[orig_patent_app_number] => 291254 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/291254
Control rod for nuclear reactors Dec 27, 1988 Issued
Array ( [id] => 2581272 [patent_doc_number] => 04925624 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-05-15 [patent_title] => 'Pressurized water nuclear reactor with solid partitioning' [patent_app_type] => 1 [patent_app_number] => 7/286820 [patent_app_country] => US [patent_app_date] => 1988-12-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 1786 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 207 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/925/04925624.pdf [firstpage_image] =>[orig_patent_app_number] => 286820 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/286820
Pressurized water nuclear reactor with solid partitioning Dec 19, 1988 Issued
Array ( [id] => 2523852 [patent_doc_number] => 04888151 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-12-19 [patent_title] => 'Reconstitutable control assembly having removable control rods with detachable split upper end plugs' [patent_app_type] => 1 [patent_app_number] => 7/284566 [patent_app_country] => US [patent_app_date] => 1988-12-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 23 [patent_no_of_words] => 5875 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 27 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/888/04888151.pdf [firstpage_image] =>[orig_patent_app_number] => 284566 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/284566
Reconstitutable control assembly having removable control rods with detachable split upper end plugs Dec 14, 1988 Issued
Array ( [id] => 2622107 [patent_doc_number] => 04919883 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-04-24 [patent_title] => 'Lower end fitting debris collector and end cap spacer grid' [patent_app_type] => 1 [patent_app_number] => 7/284018 [patent_app_country] => US [patent_app_date] => 1988-12-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 2371 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 313 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/919/04919883.pdf [firstpage_image] =>[orig_patent_app_number] => 284018 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/284018
Lower end fitting debris collector and end cap spacer grid Dec 13, 1988 Issued
Array ( [id] => 2587679 [patent_doc_number] => 04917856 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-04-17 [patent_title] => 'Self-latching reactivity-reducing device for use in on-site spent fuel assembly storage' [patent_app_type] => 1 [patent_app_number] => 7/281148 [patent_app_country] => US [patent_app_date] => 1988-12-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 9 [patent_no_of_words] => 3336 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 307 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/917/04917856.pdf [firstpage_image] =>[orig_patent_app_number] => 281148 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/281148
Self-latching reactivity-reducing device for use in on-site spent fuel assembly storage Dec 7, 1988 Issued
Array ( [id] => 2719724 [patent_doc_number] => 05024807 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-06-18 [patent_title] => 'Debris catching spring detent spacer grid' [patent_app_type] => 1 [patent_app_number] => 7/279687 [patent_app_country] => US [patent_app_date] => 1988-12-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 18 [patent_no_of_words] => 2161 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 303 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/024/05024807.pdf [firstpage_image] =>[orig_patent_app_number] => 279687 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/279687
Debris catching spring detent spacer grid Dec 4, 1988 Issued
Array ( [id] => 2679136 [patent_doc_number] => 04905260 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-27 [patent_title] => 'Nuclear reactor containment arrangement with permanent cavity seal ring' [patent_app_type] => 1 [patent_app_number] => 7/270879 [patent_app_country] => US [patent_app_date] => 1988-11-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 3811 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 209 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/905/04905260.pdf [firstpage_image] =>[orig_patent_app_number] => 270879 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/270879
Nuclear reactor containment arrangement with permanent cavity seal ring Nov 13, 1988 Issued
Array ( [id] => 2663392 [patent_doc_number] => 04904442 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-27 [patent_title] => 'Permanent cavity seal ring for a nuclear reactor containment arrangement' [patent_app_type] => 1 [patent_app_number] => 7/270878 [patent_app_country] => US [patent_app_date] => 1988-11-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 3568 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 229 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/904/04904442.pdf [firstpage_image] =>[orig_patent_app_number] => 270878 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/270878
Permanent cavity seal ring for a nuclear reactor containment arrangement Nov 13, 1988 Issued
Array ( [id] => 2602794 [patent_doc_number] => 04941159 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-07-10 [patent_title] => 'Low neutron fluence nuclear reactor internals' [patent_app_type] => 1 [patent_app_number] => 7/257917 [patent_app_country] => US [patent_app_date] => 1988-10-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 3561 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 168 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/941/04941159.pdf [firstpage_image] =>[orig_patent_app_number] => 257917 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/257917
Low neutron fluence nuclear reactor internals Oct 13, 1988 Issued
Array ( [id] => 2598781 [patent_doc_number] => 04948555 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-08-14 [patent_title] => 'Removal device for controlling the flow rate of coolant fluid in a fast-neutron nuclear reactor assembly and corresponding control process and assembly' [patent_app_type] => 1 [patent_app_number] => 7/257914 [patent_app_country] => US [patent_app_date] => 1988-10-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 11 [patent_no_of_words] => 5411 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 380 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/948/04948555.pdf [firstpage_image] =>[orig_patent_app_number] => 257914 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/257914
Removal device for controlling the flow rate of coolant fluid in a fast-neutron nuclear reactor assembly and corresponding control process and assembly Oct 13, 1988 Issued
Array ( [id] => 2597624 [patent_doc_number] => 04911880 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-03-27 [patent_title] => 'Nuclear reactor having a unitary pressure container structure' [patent_app_type] => 1 [patent_app_number] => 7/254084 [patent_app_country] => US [patent_app_date] => 1988-10-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2415 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 239 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/911/04911880.pdf [firstpage_image] =>[orig_patent_app_number] => 254084 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/254084
Nuclear reactor having a unitary pressure container structure Oct 5, 1988 Issued
Array ( [id] => 2567017 [patent_doc_number] => H0000722 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-01-02 [patent_title] => 'Nuclear reactor fuel with radially varying enrichment' [patent_app_type] => 7 [patent_app_number] => 7/252292 [patent_app_country] => US [patent_app_date] => 1988-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 8 [patent_no_of_words] => 1507 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 58 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/H0/000/H0000722.pdf [firstpage_image] =>[orig_patent_app_number] => 252292 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/252292
Nuclear reactor fuel with radially varying enrichment Sep 29, 1988 Issued
Array ( [id] => 2456857 [patent_doc_number] => H0000690 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-10-03 [patent_title] => 'Device to allow for expansion of nuclear fuel assemblies' [patent_app_type] => 7 [patent_app_number] => 7/252293 [patent_app_country] => US [patent_app_date] => 1988-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 8 [patent_no_of_words] => 1932 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 284 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/H0/000/H0000690.pdf [firstpage_image] =>[orig_patent_app_number] => 252293 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/252293
Device to allow for expansion of nuclear fuel assemblies Sep 29, 1988 Issued
Array ( [id] => 2581198 [patent_doc_number] => 04925620 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-05-15 [patent_title] => 'Control rod absorber section fabrication by square tube configuration and dual laser welding process' [patent_app_type] => 1 [patent_app_number] => 7/250631 [patent_app_country] => US [patent_app_date] => 1988-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 20 [patent_no_of_words] => 6310 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 238 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/925/04925620.pdf [firstpage_image] =>[orig_patent_app_number] => 250631 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/250631
Control rod absorber section fabrication by square tube configuration and dual laser welding process Sep 28, 1988 Issued
Array ( [id] => 2471370 [patent_doc_number] => 04879086 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-11-07 [patent_title] => 'Neutron economic reactivity control system for light water reactors' [patent_app_type] => 1 [patent_app_number] => 7/250040 [patent_app_country] => US [patent_app_date] => 1988-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 7014 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 264 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/879/04879086.pdf [firstpage_image] =>[orig_patent_app_number] => 250040 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/250040
Neutron economic reactivity control system for light water reactors Sep 26, 1988 Issued
Array ( [id] => 2663375 [patent_doc_number] => 04904441 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-27 [patent_title] => 'Method of forming a pellet of condensed gas and a pellet injector for injecting the same into a reactor' [patent_app_type] => 1 [patent_app_number] => 7/247941 [patent_app_country] => US [patent_app_date] => 1988-09-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 9 [patent_no_of_words] => 6080 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 156 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/904/04904441.pdf [firstpage_image] =>[orig_patent_app_number] => 247941 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/247941
Method of forming a pellet of condensed gas and a pellet injector for injecting the same into a reactor Sep 21, 1988 Issued
Array ( [id] => 2472931 [patent_doc_number] => 04875945 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-10-24 [patent_title] => 'Process for cleaning the exhaust gas of a fusion reactor' [patent_app_type] => 1 [patent_app_number] => 7/246233 [patent_app_country] => US [patent_app_date] => 1988-09-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 3389 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 378 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/875/04875945.pdf [firstpage_image] =>[orig_patent_app_number] => 246233 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/246233
Process for cleaning the exhaust gas of a fusion reactor Sep 18, 1988 Issued
Array ( [id] => 2740198 [patent_doc_number] => 05002722 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-03-26 [patent_title] => 'Nuclear fuel assembly with coolant flow fractionation' [patent_app_type] => 1 [patent_app_number] => 7/242003 [patent_app_country] => US [patent_app_date] => 1988-09-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 9 [patent_no_of_words] => 2445 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 302 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/002/05002722.pdf [firstpage_image] =>[orig_patent_app_number] => 242003 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/242003
Nuclear fuel assembly with coolant flow fractionation Sep 7, 1988 Issued
07/241405 CRITICALITY CONTROL AND FISSILE MATERIAL CONCENTRATION MEASURING APPARATUS Sep 6, 1988 Abandoned
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