Search

Celia C. Chang

Examiner (ID: 8606, Phone: (571)272-0679 , Office: P/1625 )

Most Active Art Unit
1625
Art Unit(s)
1612, 1625, 1202, 1203, 2899
Total Applications
3041
Issued Applications
1838
Pending Applications
177
Abandoned Applications
1031

Applications

Application numberTitle of the applicationFiling DateStatus
06/653898 SKEWED DOUBLE GROOVE SLIDE JOINT Sep 23, 1984 Abandoned
Array ( [id] => 2231918 [patent_doc_number] => 04576095 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1986-03-18 [patent_title] => 'Ballast tamping machine' [patent_app_type] => 1 [patent_app_number] => 6/648715 [patent_app_country] => US [patent_app_date] => 1984-09-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 2742 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 265 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/576/04576095.pdf [firstpage_image] =>[orig_patent_app_number] => 648715 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/648715
Ballast tamping machine Sep 9, 1984 Issued
Array ( [id] => 2267307 [patent_doc_number] => 04625651 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1986-12-02 [patent_title] => 'Mobile track switch leveling, lining and tamping machine' [patent_app_type] => 1 [patent_app_number] => 6/643862 [patent_app_country] => US [patent_app_date] => 1984-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 3584 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 259 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/625/04625651.pdf [firstpage_image] =>[orig_patent_app_number] => 643862 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/643862
Mobile track switch leveling, lining and tamping machine Aug 23, 1984 Issued
Array ( [id] => 2224903 [patent_doc_number] => 04572079 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1986-02-25 [patent_title] => 'Mobile track leveling, lining and tamping machine' [patent_app_type] => 1 [patent_app_number] => 6/643865 [patent_app_country] => US [patent_app_date] => 1984-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 2769 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 283 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/572/04572079.pdf [firstpage_image] =>[orig_patent_app_number] => 643865 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/643865
Mobile track leveling, lining and tamping machine Aug 23, 1984 Issued
Array ( [id] => 2305192 [patent_doc_number] => 04685398 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1987-08-11 [patent_title] => 'Comprehensive unit transportation system' [patent_app_type] => 1 [patent_app_number] => 6/629123 [patent_app_country] => US [patent_app_date] => 1984-08-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 25 [patent_no_of_words] => 13882 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 331 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/685/04685398.pdf [firstpage_image] =>[orig_patent_app_number] => 629123 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/629123
Comprehensive unit transportation system Aug 13, 1984 Issued
Array ( [id] => 2214577 [patent_doc_number] => 04624188 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1986-11-25 [patent_title] => 'Stack supporting container car' [patent_app_type] => 1 [patent_app_number] => 6/640733 [patent_app_country] => US [patent_app_date] => 1984-08-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 15 [patent_no_of_words] => 3699 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 428 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/624/04624188.pdf [firstpage_image] =>[orig_patent_app_number] => 640733 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/640733
Stack supporting container car Aug 13, 1984 Issued
Array ( [id] => 2331094 [patent_doc_number] => 04655142 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1987-04-07 [patent_title] => 'Apparatus for correcting the level and cross level of a track' [patent_app_type] => 1 [patent_app_number] => 6/620145 [patent_app_country] => US [patent_app_date] => 1984-06-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 4531 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 410 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/655/04655142.pdf [firstpage_image] =>[orig_patent_app_number] => 620145 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/620145
Apparatus for correcting the level and cross level of a track Jun 12, 1984 Issued
Array ( [id] => 2211580 [patent_doc_number] => 04627360 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1986-12-09 [patent_title] => 'Mobile track leveling, lining and tamping machine' [patent_app_type] => 1 [patent_app_number] => 6/618121 [patent_app_country] => US [patent_app_date] => 1984-06-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 4138 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 346 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/627/04627360.pdf [firstpage_image] =>[orig_patent_app_number] => 618121 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/618121
Mobile track leveling, lining and tamping machine Jun 6, 1984 Issued
Array ( [id] => 2253971 [patent_doc_number] => 04628822 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1986-12-16 [patent_title] => 'Continuously advancing track leveling, lining and tamping machine' [patent_app_type] => 1 [patent_app_number] => 6/618238 [patent_app_country] => US [patent_app_date] => 1984-06-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 5827 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 365 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/628/04628822.pdf [firstpage_image] =>[orig_patent_app_number] => 618238 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/618238
Continuously advancing track leveling, lining and tamping machine Jun 6, 1984 Issued
Array ( [id] => 2208902 [patent_doc_number] => 04630541 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1986-12-23 [patent_title] => 'Mobile track leveling, lining and tamping machine' [patent_app_type] => 1 [patent_app_number] => 6/618122 [patent_app_country] => US [patent_app_date] => 1984-06-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 6453 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 277 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/630/04630541.pdf [firstpage_image] =>[orig_patent_app_number] => 618122 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/618122
Mobile track leveling, lining and tamping machine Jun 6, 1984 Issued
Array ( [id] => 2248759 [patent_doc_number] => 04588126 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1986-05-13 [patent_title] => 'Metal element for fastening a rail to a concrete tie' [patent_app_type] => 1 [patent_app_number] => 6/615457 [patent_app_country] => US [patent_app_date] => 1984-05-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 10 [patent_no_of_words] => 2303 [patent_no_of_claims] => 6 [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/04/588/04588126.pdf [firstpage_image] =>[orig_patent_app_number] => 615457 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/615457
Metal element for fastening a rail to a concrete tie May 29, 1984 Issued
Array ( [id] => 2232286 [patent_doc_number] => 04632037 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1986-12-30 [patent_title] => 'Moble track leveling, lining and tamping machine' [patent_app_type] => 1 [patent_app_number] => 6/610343 [patent_app_country] => US [patent_app_date] => 1984-05-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 5734 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 369 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/632/04632037.pdf [firstpage_image] =>[orig_patent_app_number] => 610343 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/610343
Moble track leveling, lining and tamping machine May 14, 1984 Issued
Array ( [id] => 2283700 [patent_doc_number] => 04659043 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1987-04-21 [patent_title] => 'Railroad hot box detector' [patent_app_type] => 1 [patent_app_number] => 6/609938 [patent_app_country] => US [patent_app_date] => 1984-05-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 1293 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 165 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/659/04659043.pdf [firstpage_image] =>[orig_patent_app_number] => 609938 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/609938
Railroad hot box detector May 13, 1984 Issued
Array ( [id] => 2354421 [patent_doc_number] => 04646645 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1987-03-03 [patent_title] => 'Mobile track leveling, lining and tamping machine' [patent_app_type] => 1 [patent_app_number] => 6/608999 [patent_app_country] => US [patent_app_date] => 1984-05-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 2960 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 329 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/646/04646645.pdf [firstpage_image] =>[orig_patent_app_number] => 608999 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/608999
Mobile track leveling, lining and tamping machine May 9, 1984 Issued
Array ( [id] => 2211550 [patent_doc_number] => 04627358 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1986-12-09 [patent_title] => 'Continuous action track leveling, lining and tamping machine' [patent_app_type] => 1 [patent_app_number] => 6/609026 [patent_app_country] => US [patent_app_date] => 1984-05-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 14 [patent_no_of_words] => 10719 [patent_no_of_claims] => 38 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 298 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/627/04627358.pdf [firstpage_image] =>[orig_patent_app_number] => 609026 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/609026
Continuous action track leveling, lining and tamping machine May 9, 1984 Issued
Array ( [id] => 2289865 [patent_doc_number] => 04643101 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1987-02-17 [patent_title] => 'Mobile track leveling, lining and tamping machine' [patent_app_type] => 1 [patent_app_number] => 6/607207 [patent_app_country] => US [patent_app_date] => 1984-05-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 12 [patent_no_of_words] => 8833 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 203 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/643/04643101.pdf [firstpage_image] =>[orig_patent_app_number] => 607207 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/607207
Mobile track leveling, lining and tamping machine May 3, 1984 Issued
Array ( [id] => 2214862 [patent_doc_number] => 04609144 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1986-09-02 [patent_title] => 'Railroad tie cover' [patent_app_type] => 1 [patent_app_number] => 6/604469 [patent_app_country] => US [patent_app_date] => 1984-04-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 12 [patent_no_of_words] => 6374 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 124 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/609/04609144.pdf [firstpage_image] =>[orig_patent_app_number] => 604469 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/604469
Railroad tie cover Apr 26, 1984 Issued
Array ( [id] => 2354483 [patent_doc_number] => 04646650 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1987-03-03 [patent_title] => 'Trolley device in a duplex chain conveyor' [patent_app_type] => 1 [patent_app_number] => 6/605010 [patent_app_country] => US [patent_app_date] => 1984-04-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2313 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 565 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/646/04646650.pdf [firstpage_image] =>[orig_patent_app_number] => 605010 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/605010
Trolley device in a duplex chain conveyor Apr 26, 1984 Issued
06/602120 HIGH SPEED STREAMLINED COACH Apr 18, 1984 Abandoned
Array ( [id] => 2585546 [patent_doc_number] => 04940264 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-07-10 [patent_title] => 'Flange connection' [patent_app_type] => 1 [patent_app_number] => 6/599501 [patent_app_country] => US [patent_app_date] => 1984-04-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 4 [patent_no_of_words] => 3422 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 8 [patent_words_short_claim] => 22 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/940/04940264.pdf [firstpage_image] =>[orig_patent_app_number] => 599501 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/599501
Flange connection Apr 11, 1984 Issued
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