Search

Li Wu Chang

Examiner (ID: 335, Phone: (571)270-3809 , Office: P/2124 )

Most Active Art Unit
2124
Art Unit(s)
2142, 2129, 2124
Total Applications
877
Issued Applications
744
Pending Applications
34
Abandoned Applications
120

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 2035265 [patent_doc_number] => 04413935 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-11-08 [patent_title] => 'Flow splitter for dividing a stream of pulverulent material into multiple streams' [patent_app_type] => 1 [patent_app_number] => 6/278242 [patent_app_country] => US [patent_app_date] => 1981-06-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2475 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 273 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/413/04413935.pdf [firstpage_image] =>[orig_patent_app_number] => 278242 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/278242
Flow splitter for dividing a stream of pulverulent material into multiple streams Jun 28, 1981 Issued
Array ( [id] => 2037865 [patent_doc_number] => 04412762 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-11-01 [patent_title] => 'Pneumatic unloading of particulates' [patent_app_type] => 1 [patent_app_number] => 6/277301 [patent_app_country] => US [patent_app_date] => 1981-06-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 2638 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 77 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/412/04412762.pdf [firstpage_image] =>[orig_patent_app_number] => 277301 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/277301
Pneumatic unloading of particulates Jun 24, 1981 Issued
Array ( [id] => 2040098 [patent_doc_number] => 04382725 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-05-10 [patent_title] => 'Pneumatic outlet valve' [patent_app_type] => 1 [patent_app_number] => 6/250793 [patent_app_country] => US [patent_app_date] => 1981-04-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 6 [patent_no_of_words] => 1840 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 132 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/382/04382725.pdf [firstpage_image] =>[orig_patent_app_number] => 250793 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/250793
Pneumatic outlet valve Apr 2, 1981 Issued
Array ( [id] => 2108410 [patent_doc_number] => 04451183 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1984-05-29 [patent_title] => 'Method and arrangement of transporting aggregate, fragmented material and the like' [patent_app_type] => 1 [patent_app_number] => 6/250409 [patent_app_country] => US [patent_app_date] => 1981-04-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 4 [patent_no_of_words] => 2759 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 141 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/451/04451183.pdf [firstpage_image] =>[orig_patent_app_number] => 250409 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/250409
Method and arrangement of transporting aggregate, fragmented material and the like Apr 1, 1981 Issued
Array ( [id] => 2042920 [patent_doc_number] => 04405265 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-09-20 [patent_title] => 'Method and apparatus for the continuous transfer of particulates from a liquid conveying medium to a gaseous conveying medium' [patent_app_type] => 1 [patent_app_number] => 6/245078 [patent_app_country] => US [patent_app_date] => 1981-03-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 2634 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 242 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/405/04405265.pdf [firstpage_image] =>[orig_patent_app_number] => 245078 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/245078
Method and apparatus for the continuous transfer of particulates from a liquid conveying medium to a gaseous conveying medium Mar 17, 1981 Issued
Array ( [id] => 2040081 [patent_doc_number] => 04382723 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-05-10 [patent_title] => 'Silo for storage of powder-like commodities' [patent_app_type] => 1 [patent_app_number] => 6/244960 [patent_app_country] => US [patent_app_date] => 1981-03-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 2474 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 151 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/382/04382723.pdf [firstpage_image] =>[orig_patent_app_number] => 244960 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/244960
Silo for storage of powder-like commodities Mar 17, 1981 Issued
Array ( [id] => 2019410 [patent_doc_number] => 04372712 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-02-08 [patent_title] => 'Continuous transfer of particles from a gaseous conveying medium to a liquid conveying medium' [patent_app_type] => 1 [patent_app_number] => 6/245110 [patent_app_country] => US [patent_app_date] => 1981-03-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1501 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 126 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/372/04372712.pdf [firstpage_image] =>[orig_patent_app_number] => 245110 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/245110
Continuous transfer of particles from a gaseous conveying medium to a liquid conveying medium Mar 17, 1981 Issued
Array ( [id] => 2049631 [patent_doc_number] => 04389143 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-06-21 [patent_title] => 'Method of unplugging dense conveying system' [patent_app_type] => 1 [patent_app_number] => 6/244528 [patent_app_country] => US [patent_app_date] => 1981-03-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 2153 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 184 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/389/04389143.pdf [firstpage_image] =>[orig_patent_app_number] => 244528 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/244528
Method of unplugging dense conveying system Mar 15, 1981 Issued
Array ( [id] => 2002327 [patent_doc_number] => 04411560 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-10-25 [patent_title] => 'Pneumatic hopper discharge outlet' [patent_app_type] => 1 [patent_app_number] => 6/243390 [patent_app_country] => US [patent_app_date] => 1981-03-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 8 [patent_no_of_words] => 3045 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 109 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/411/04411560.pdf [firstpage_image] =>[orig_patent_app_number] => 243390 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/243390
Pneumatic hopper discharge outlet Mar 12, 1981 Issued
Array ( [id] => 2029366 [patent_doc_number] => 04381839 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-05-03 [patent_title] => 'Gantry having adjustable side supports' [patent_app_type] => 1 [patent_app_number] => 6/239318 [patent_app_country] => US [patent_app_date] => 1981-03-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 10 [patent_no_of_words] => 3535 [patent_no_of_claims] => 6 [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/04/381/04381839.pdf [firstpage_image] =>[orig_patent_app_number] => 239318 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/239318
Gantry having adjustable side supports Mar 1, 1981 Issued
Array ( [id] => 2005945 [patent_doc_number] => 04398852 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-08-16 [patent_title] => 'Process and apparatus for adding and removing particles from pressurized reactors' [patent_app_type] => 1 [patent_app_number] => 6/235195 [patent_app_country] => US [patent_app_date] => 1981-02-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 3664 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 130 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/398/04398852.pdf [firstpage_image] =>[orig_patent_app_number] => 235195 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/235195
Process and apparatus for adding and removing particles from pressurized reactors Feb 16, 1981 Issued
Array ( [id] => 1994743 [patent_doc_number] => 04373838 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-02-15 [patent_title] => 'Vacuum sewage transport system' [patent_app_type] => 1 [patent_app_number] => 6/234110 [patent_app_country] => US [patent_app_date] => 1981-02-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 4467 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 214 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/373/04373838.pdf [firstpage_image] =>[orig_patent_app_number] => 234110 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/234110
Vacuum sewage transport system Feb 12, 1981 Issued
Array ( [id] => 1951011 [patent_doc_number] => 04354793 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1982-10-19 [patent_title] => 'Reel locking mechanism for a reel loader apparatus' [patent_app_type] => 1 [patent_app_number] => 6/232257 [patent_app_country] => US [patent_app_date] => 1981-02-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 6 [patent_no_of_words] => 2211 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 363 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/354/04354793.pdf [firstpage_image] =>[orig_patent_app_number] => 232257 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/232257
Reel locking mechanism for a reel loader apparatus Feb 5, 1981 Issued
Array ( [id] => 2072692 [patent_doc_number] => 04460306 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1984-07-17 [patent_title] => 'Wheel dolly' [patent_app_type] => 1 [patent_app_number] => 6/222675 [patent_app_country] => US [patent_app_date] => 1981-01-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 1846 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 93 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/460/04460306.pdf [firstpage_image] =>[orig_patent_app_number] => 222675 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/222675
Wheel dolly Jan 4, 1981 Issued
Array ( [id] => 2018253 [patent_doc_number] => 04394914 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-07-26 [patent_title] => 'Telescopic cranes' [patent_app_type] => 1 [patent_app_number] => 6/218175 [patent_app_country] => US [patent_app_date] => 1980-12-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 8 [patent_no_of_words] => 1690 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 193 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/394/04394914.pdf [firstpage_image] =>[orig_patent_app_number] => 218175 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/218175
Telescopic cranes Dec 18, 1980 Issued
Array ( [id] => 2018453 [patent_doc_number] => 04370087 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-01-25 [patent_title] => 'Dumping apparatus for particulate-bearing container' [patent_app_type] => 1 [patent_app_number] => 6/206581 [patent_app_country] => US [patent_app_date] => 1980-11-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 1854 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 182 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/370/04370087.pdf [firstpage_image] =>[orig_patent_app_number] => 206581 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/206581
Dumping apparatus for particulate-bearing container Nov 12, 1980 Issued
Array ( [id] => 1957351 [patent_doc_number] => 04339222 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1982-07-13 [patent_title] => 'Door locking mechanism for hopper car doors' [patent_app_type] => 1 [patent_app_number] => 6/202533 [patent_app_country] => US [patent_app_date] => 1980-10-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 7 [patent_no_of_words] => 1987 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 181 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/339/04339222.pdf [firstpage_image] =>[orig_patent_app_number] => 202533 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/202533
Door locking mechanism for hopper car doors Oct 30, 1980 Issued
Array ( [id] => 1979665 [patent_doc_number] => 04359307 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1982-11-16 [patent_title] => 'Vehicle for transporting compressible materials' [patent_app_type] => 1 [patent_app_number] => 6/197301 [patent_app_country] => US [patent_app_date] => 1980-10-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 12 [patent_no_of_words] => 3481 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 282 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/359/04359307.pdf [firstpage_image] =>[orig_patent_app_number] => 197301 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/197301
Vehicle for transporting compressible materials Oct 14, 1980 Issued
Array ( [id] => 1963791 [patent_doc_number] => 04330232 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1982-05-18 [patent_title] => 'Grain bin and truck loading and unloading system' [patent_app_type] => 1 [patent_app_number] => 6/191610 [patent_app_country] => US [patent_app_date] => 1980-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 2581 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 392 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/330/04330232.pdf [firstpage_image] =>[orig_patent_app_number] => 191610 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/191610
Grain bin and truck loading and unloading system Sep 28, 1980 Issued
Array ( [id] => 1981361 [patent_doc_number] => 04363590 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1982-12-14 [patent_title] => 'Power operated boat loading/unloading marine trailer' [patent_app_type] => 1 [patent_app_number] => 6/190997 [patent_app_country] => US [patent_app_date] => 1980-09-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 8 [patent_no_of_words] => 3041 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 136 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/363/04363590.pdf [firstpage_image] =>[orig_patent_app_number] => 190997 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/190997
Power operated boat loading/unloading marine trailer Sep 25, 1980 Issued
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