Search

Dah Wei D. Yuan

Supervisory Patent Examiner (ID: 10199, Phone: (571)272-1295 , Office: P/1717 )

Most Active Art Unit
1745
Art Unit(s)
1795, 1727, 1717, 1745
Total Applications
504
Issued Applications
341
Pending Applications
54
Abandoned Applications
113

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 630220 [patent_doc_number] => 07132180 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-11-07 [patent_title] => 'Alkyl sorbitan emulsion compositions for fuel cell reformer start-up' [patent_app_type] => utility [patent_app_number] => 10/324208 [patent_app_country] => US [patent_app_date] => 2002-12-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 4515 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 150 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/132/07132180.pdf [firstpage_image] =>[orig_patent_app_number] => 10324208 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/324208
Alkyl sorbitan emulsion compositions for fuel cell reformer start-up Dec 19, 2002 Issued
Array ( [id] => 744003 [patent_doc_number] => 07026068 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-04-11 [patent_title] => 'Positive electrode active material for lithium ion secondary battery' [patent_app_type] => utility [patent_app_number] => 10/320375 [patent_app_country] => US [patent_app_date] => 2002-12-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 8 [patent_no_of_words] => 10414 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 18 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/026/07026068.pdf [firstpage_image] =>[orig_patent_app_number] => 10320375 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/320375
Positive electrode active material for lithium ion secondary battery Dec 16, 2002 Issued
Array ( [id] => 6668630 [patent_doc_number] => 20030113613 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-06-19 [patent_title] => 'High energy density rechargeable cell for medical device applications' [patent_app_type] => new [patent_app_number] => 10/320319 [patent_app_country] => US [patent_app_date] => 2002-12-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3706 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 71 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0113/20030113613.pdf [firstpage_image] =>[orig_patent_app_number] => 10320319 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/320319
High energy density rechargeable cell for medical device applications Dec 15, 2002 Abandoned
Array ( [id] => 442288 [patent_doc_number] => 07255945 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2007-08-14 [patent_title] => 'Compact fuel cell system with efficient power generation performance' [patent_app_type] => utility [patent_app_number] => 10/316512 [patent_app_country] => US [patent_app_date] => 2002-12-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 14 [patent_no_of_words] => 5184 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 317 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/255/07255945.pdf [firstpage_image] =>[orig_patent_app_number] => 10316512 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/316512
Compact fuel cell system with efficient power generation performance Dec 9, 2002 Issued
Array ( [id] => 6869732 [patent_doc_number] => 20030082421 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-05-01 [patent_title] => 'Liquid fuel-housing tank for fuel cell and fuel cell' [patent_app_type] => new [patent_app_number] => 10/315101 [patent_app_country] => US [patent_app_date] => 2002-12-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 11338 [patent_no_of_claims] => 39 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 51 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0082/20030082421.pdf [firstpage_image] =>[orig_patent_app_number] => 10315101 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/315101
Liquid fuel-housing tank for fuel cell and fuel cell Dec 9, 2002 Issued
Array ( [id] => 1021099 [patent_doc_number] => 06887599 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-05-03 [patent_title] => 'Procedure for starting up a fuel cell system using a fuel purge' [patent_app_type] => utility [patent_app_number] => 10/305301 [patent_app_country] => US [patent_app_date] => 2002-11-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 5696 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 175 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/887/06887599.pdf [firstpage_image] =>[orig_patent_app_number] => 10305301 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/305301
Procedure for starting up a fuel cell system using a fuel purge Nov 25, 2002 Issued
Array ( [id] => 6658688 [patent_doc_number] => 20030134164 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-07-17 [patent_title] => 'Procedure for shutting down a fuel cell system using air purge' [patent_app_type] => new [patent_app_number] => 10/305300 [patent_app_country] => US [patent_app_date] => 2002-11-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 5869 [patent_no_of_claims] => 32 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 207 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0134/20030134164.pdf [firstpage_image] =>[orig_patent_app_number] => 10305300 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/305300
Procedure for shutting down a fuel cell system using air purge Nov 25, 2002 Issued
Array ( [id] => 7464800 [patent_doc_number] => 20040101732 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-05-27 [patent_title] => 'Ion conductive membrane for electrochemical application' [patent_app_type] => new [patent_app_number] => 10/303072 [patent_app_country] => US [patent_app_date] => 2002-11-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1447 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 30 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0101/20040101732.pdf [firstpage_image] =>[orig_patent_app_number] => 10303072 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/303072
Ion conductive membrane for electrochemical application Nov 22, 2002 Issued
Array ( [id] => 7201148 [patent_doc_number] => 20040086775 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-05-06 [patent_title] => 'Fuel cell having a variable gas diffusion layer' [patent_app_type] => new [patent_app_number] => 10/289694 [patent_app_country] => US [patent_app_date] => 2002-11-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 12 [patent_no_of_words] => 10202 [patent_no_of_claims] => 68 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 73 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0086/20040086775.pdf [firstpage_image] =>[orig_patent_app_number] => 10289694 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/289694
Fuel cell having a variable gas diffusion layer Nov 5, 2002 Abandoned
Array ( [id] => 6631983 [patent_doc_number] => 20030211395 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-11-13 [patent_title] => 'High capacity alkaline batteries with fluorinated graphite containing cathodes' [patent_app_type] => new [patent_app_number] => 10/275076 [patent_app_country] => US [patent_app_date] => 2002-11-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 3524 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 22 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0211/20030211395.pdf [firstpage_image] =>[orig_patent_app_number] => 10275076 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/275076
High capacity alkaline batteries with fluorinated graphite containing cathodes Oct 31, 2002 Abandoned
Array ( [id] => 6696281 [patent_doc_number] => 20030108475 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-06-12 [patent_title] => 'Carbonaceous material for hydrogen storage and method for preparation thereof, carbonaceous material having hydrogen absorbed therein and method for preparation thereof, cell and fuel using carbonaceous material having hydrogen absorbed therein' [patent_app_type] => new [patent_app_number] => 10/221874 [patent_app_country] => US [patent_app_date] => 2002-11-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 11175 [patent_no_of_claims] => 60 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 25 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0108/20030108475.pdf [firstpage_image] =>[orig_patent_app_number] => 10221874 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/221874
Carbonaceous material for hydrogen storage and method for preparation thereof, carbonaceous material having hydrogen absorbed therein and method for preparation thereof, cell and fuel using carbonaceous material having hydrogen absorbed therein Oct 31, 2002 Abandoned
Array ( [id] => 7201018 [patent_doc_number] => 20040086755 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-05-06 [patent_title] => 'Portable fuel cell system' [patent_app_type] => new [patent_app_number] => 10/283986 [patent_app_country] => US [patent_app_date] => 2002-10-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2702 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 39 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0086/20040086755.pdf [firstpage_image] =>[orig_patent_app_number] => 10283986 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/283986
Portable fuel cell system Oct 29, 2002 Abandoned
Array ( [id] => 7381449 [patent_doc_number] => 20040081872 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-04-29 [patent_title] => 'Fuel cell stack with heat exchanger' [patent_app_type] => new [patent_app_number] => 10/282987 [patent_app_country] => US [patent_app_date] => 2002-10-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 5487 [patent_no_of_claims] => 96 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 36 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0081/20040081872.pdf [firstpage_image] =>[orig_patent_app_number] => 10282987 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/282987
Fuel cell stack with heat exchanger Oct 27, 2002 Abandoned
Array ( [id] => 6860866 [patent_doc_number] => 20030091874 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-05-15 [patent_title] => 'Method and apparatus to control water balance in a fuel cell system' [patent_app_type] => new [patent_app_number] => 10/274516 [patent_app_country] => US [patent_app_date] => 2002-10-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 1776 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 51 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0091/20030091874.pdf [firstpage_image] =>[orig_patent_app_number] => 10274516 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/274516
Method and apparatus to control water balance in a fuel cell system Oct 17, 2002 Abandoned
Array ( [id] => 468343 [patent_doc_number] => 07232624 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2007-06-19 [patent_title] => 'Membrane and electrode assembly, production method of the same and fuel cell employing the same' [patent_app_type] => utility [patent_app_number] => 10/270586 [patent_app_country] => US [patent_app_date] => 2002-10-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 4201 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 207 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/232/07232624.pdf [firstpage_image] =>[orig_patent_app_number] => 10270586 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/270586
Membrane and electrode assembly, production method of the same and fuel cell employing the same Oct 15, 2002 Issued
Array ( [id] => 7617220 [patent_doc_number] => 06946220 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-09-20 [patent_title] => 'Electrochemical cell having a multiplate electrode assembly housed in an irregularly shaped casing' [patent_app_type] => utility [patent_app_number] => 10/272185 [patent_app_country] => US [patent_app_date] => 2002-10-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 9 [patent_no_of_words] => 6309 [patent_no_of_claims] => 27 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 280 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/946/06946220.pdf [firstpage_image] =>[orig_patent_app_number] => 10272185 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/272185
Electrochemical cell having a multiplate electrode assembly housed in an irregularly shaped casing Oct 15, 2002 Issued
Array ( [id] => 7218973 [patent_doc_number] => 20040072075 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-04-15 [patent_title] => 'Fluorinated carbon active material' [patent_app_type] => new [patent_app_number] => 10/272415 [patent_app_country] => US [patent_app_date] => 2002-10-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 2782 [patent_no_of_claims] => 140 [patent_no_of_ind_claims] => 14 [patent_words_short_claim] => 10 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0072/20040072075.pdf [firstpage_image] =>[orig_patent_app_number] => 10272415 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/272415
Fluorinated carbon active material Oct 14, 2002 Issued
Array ( [id] => 953788 [patent_doc_number] => 06958200 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-10-25 [patent_title] => 'Nickel-metal hydride storage battery and assembly of the same' [patent_app_type] => utility [patent_app_number] => 10/263885 [patent_app_country] => US [patent_app_date] => 2002-10-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 8 [patent_no_of_words] => 8681 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 229 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/958/06958200.pdf [firstpage_image] =>[orig_patent_app_number] => 10263885 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/263885
Nickel-metal hydride storage battery and assembly of the same Oct 2, 2002 Issued
Array ( [id] => 6658754 [patent_doc_number] => 20030134196 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-07-17 [patent_title] => 'Non-aqueous organic secondary battery' [patent_app_type] => new [patent_app_number] => 10/264274 [patent_app_country] => US [patent_app_date] => 2002-10-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 5974 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 53 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0134/20030134196.pdf [firstpage_image] =>[orig_patent_app_number] => 10264274 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/264274
Non-aqueous organic secondary battery Oct 2, 2002 Abandoned
Array ( [id] => 7218822 [patent_doc_number] => 20040072055 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-04-15 [patent_title] => 'Graphite article useful as a fuel cell component substrate' [patent_app_type] => new [patent_app_number] => 10/260748 [patent_app_country] => US [patent_app_date] => 2002-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 6647 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 83 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0072/20040072055.pdf [firstpage_image] =>[orig_patent_app_number] => 10260748 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/260748
Graphite article useful as a fuel cell component substrate Sep 29, 2002 Abandoned
Menu