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] => 6864989 [patent_doc_number] => 20030190515 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-10-09 [patent_title] => 'Corrosion resistant metallic bipolar plate' [patent_app_type] => new [patent_app_number] => 10/403472 [patent_app_country] => US [patent_app_date] => 2003-03-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2300 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 26 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0190/20030190515.pdf [firstpage_image] =>[orig_patent_app_number] => 10403472 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/403472
Corrosion resistant metallic bipolar plate Mar 30, 2003 Issued
Array ( [id] => 694074 [patent_doc_number] => 07070876 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-07-04 [patent_title] => 'Membrane electrode assembly with integrated seal' [patent_app_type] => utility [patent_app_number] => 10/395874 [patent_app_country] => US [patent_app_date] => 2003-03-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 11 [patent_no_of_words] => 5845 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 268 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/070/07070876.pdf [firstpage_image] =>[orig_patent_app_number] => 10395874 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/395874
Membrane electrode assembly with integrated seal Mar 23, 2003 Issued
Array ( [id] => 7201116 [patent_doc_number] => 20040086768 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-05-06 [patent_title] => 'Fuel cells' [patent_app_type] => new [patent_app_number] => 10/391547 [patent_app_country] => US [patent_app_date] => 2003-03-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 6716 [patent_no_of_claims] => 70 [patent_no_of_ind_claims] => 12 [patent_words_short_claim] => 47 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0086/20040086768.pdf [firstpage_image] =>[orig_patent_app_number] => 10391547 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/391547
Fuel cells Mar 16, 2003 Abandoned
Array ( [id] => 612281 [patent_doc_number] => 07147675 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-12-12 [patent_title] => 'Method and device for filling volatile liquids into the housing of electric components and for sealing the housing' [patent_app_type] => utility [patent_app_number] => 10/386172 [patent_app_country] => US [patent_app_date] => 2003-03-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3117 [patent_no_of_claims] => 15 [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/07/147/07147675.pdf [firstpage_image] =>[orig_patent_app_number] => 10386172 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/386172
Method and device for filling volatile liquids into the housing of electric components and for sealing the housing Mar 9, 2003 Issued
Array ( [id] => 6808931 [patent_doc_number] => 20030198870 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-10-23 [patent_title] => 'Electrolytic composition and non-aqueous electrolytic secondary battery' [patent_app_type] => new [patent_app_number] => 10/374075 [patent_app_country] => US [patent_app_date] => 2003-02-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 13876 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 26 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0198/20030198870.pdf [firstpage_image] =>[orig_patent_app_number] => 10374075 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/374075
Electrolytic composition and non-aqueous electrolytic secondary battery Feb 26, 2003 Abandoned
Array ( [id] => 6796691 [patent_doc_number] => 20030175565 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-09-18 [patent_title] => 'Solid oxide fuel cell system and a method for controlling the same' [patent_app_type] => new [patent_app_number] => 10/367872 [patent_app_country] => US [patent_app_date] => 2003-02-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 9288 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 175 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0175/20030175565.pdf [firstpage_image] =>[orig_patent_app_number] => 10367872 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/367872
Solid oxide fuel cell system and a method for controlling the same Feb 18, 2003 Abandoned
Array ( [id] => 7677855 [patent_doc_number] => 20040151971 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-08-05 [patent_title] => 'PEM fuel cell with flow-field having a branched midsection' [patent_app_type] => new [patent_app_number] => 10/356672 [patent_app_country] => US [patent_app_date] => 2003-01-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 2940 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 160 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0151/20040151971.pdf [firstpage_image] =>[orig_patent_app_number] => 10356672 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/356672
PEM fuel cell with flow-field having a branched midsection Jan 30, 2003 Abandoned
Array ( [id] => 6710776 [patent_doc_number] => 20030170525 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-09-11 [patent_title] => 'Heterogeneous composite bipolar plate of a fuel cell' [patent_app_type] => new [patent_app_number] => 10/352474 [patent_app_country] => US [patent_app_date] => 2003-01-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 2614 [patent_no_of_claims] => 39 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 37 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0170/20030170525.pdf [firstpage_image] =>[orig_patent_app_number] => 10352474 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/352474
Heterogeneous composite bipolar plate of a fuel cell Jan 27, 2003 Issued
Array ( [id] => 7396661 [patent_doc_number] => 20040018415 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-01-29 [patent_title] => 'Flat fuel cell assembly and connection structure thereof' [patent_app_type] => new [patent_app_number] => 10/348175 [patent_app_country] => US [patent_app_date] => 2003-01-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 3657 [patent_no_of_claims] => 46 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 80 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0018/20040018415.pdf [firstpage_image] =>[orig_patent_app_number] => 10348175 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/348175
Flat fuel cell assembly and connection structure thereof Jan 21, 2003 Abandoned
Array ( [id] => 6787447 [patent_doc_number] => 20030138686 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-07-24 [patent_title] => 'Fuel cell separator production method, fuel cell separators, and polymer electrolyte fuel cells' [patent_app_type] => new [patent_app_number] => 10/347277 [patent_app_country] => US [patent_app_date] => 2003-01-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 4638 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 47 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0138/20030138686.pdf [firstpage_image] =>[orig_patent_app_number] => 10347277 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/347277
Fuel cell separator production method, fuel cell separators, and polymer electrolyte fuel cells Jan 20, 2003 Abandoned
Array ( [id] => 756981 [patent_doc_number] => 07014928 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-03-21 [patent_title] => 'Direct current/direct current converter for a fuel cell system' [patent_app_type] => utility [patent_app_number] => 10/346561 [patent_app_country] => US [patent_app_date] => 2003-01-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3263 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/014/07014928.pdf [firstpage_image] =>[orig_patent_app_number] => 10346561 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/346561
Direct current/direct current converter for a fuel cell system Jan 15, 2003 Issued
Array ( [id] => 6710790 [patent_doc_number] => 20030170539 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-09-11 [patent_title] => 'Aqueous electrode binder and electrodes and fuel cells including same' [patent_app_type] => new [patent_app_number] => 10/345073 [patent_app_country] => US [patent_app_date] => 2003-01-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 9044 [patent_no_of_claims] => 72 [patent_no_of_ind_claims] => 7 [patent_words_short_claim] => 28 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0170/20030170539.pdf [firstpage_image] =>[orig_patent_app_number] => 10345073 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/345073
Aqueous electrode binder and electrodes and fuel cells including same Jan 14, 2003 Abandoned
Array ( [id] => 7350870 [patent_doc_number] => 20040048155 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-03-11 [patent_title] => 'Silver manganese oxide electrodes for lithium batteries' [patent_app_type] => new [patent_app_number] => 10/338175 [patent_app_country] => US [patent_app_date] => 2003-01-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 5045 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 42 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0048/20040048155.pdf [firstpage_image] =>[orig_patent_app_number] => 10338175 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/338175
Silver manganese oxide electrodes for lithium batteries Jan 6, 2003 Issued
Array ( [id] => 788037 [patent_doc_number] => 06986969 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-01-17 [patent_title] => 'Alkaline cell with flat housing and improved current collector' [patent_app_type] => utility [patent_app_number] => 10/336475 [patent_app_country] => US [patent_app_date] => 2003-01-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 10073 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 147 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/986/06986969.pdf [firstpage_image] =>[orig_patent_app_number] => 10336475 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/336475
Alkaline cell with flat housing and improved current collector Jan 2, 2003 Issued
Array ( [id] => 1024318 [patent_doc_number] => 06884548 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-04-26 [patent_title] => 'Nonaqueous electrolyte battery containing an alkali, transition metal negative electrode' [patent_app_type] => utility [patent_app_number] => 10/329418 [patent_app_country] => US [patent_app_date] => 2002-12-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 7470 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 42 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/884/06884548.pdf [firstpage_image] =>[orig_patent_app_number] => 10329418 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/329418
Nonaqueous electrolyte battery containing an alkali, transition metal negative electrode Dec 26, 2002 Issued
Array ( [id] => 6855960 [patent_doc_number] => 20030129461 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-07-10 [patent_title] => 'Method for operating a polymer electrolyte membrane fuel cell system, and an associated PEM fuel cell system' [patent_app_type] => new [patent_app_number] => 10/329973 [patent_app_country] => US [patent_app_date] => 2002-12-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3833 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 49 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0129/20030129461.pdf [firstpage_image] =>[orig_patent_app_number] => 10329973 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/329973
Method for operating a polymer electrolyte membrane fuel cell system, and an associated PEM fuel cell system Dec 25, 2002 Abandoned
Array ( [id] => 1073535 [patent_doc_number] => 06838199 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-01-04 [patent_title] => 'Start up system and method for a fuel cell power plant using a cathode electrode fuel purge' [patent_app_type] => utility [patent_app_number] => 10/329874 [patent_app_country] => US [patent_app_date] => 2002-12-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 4351 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 255 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/838/06838199.pdf [firstpage_image] =>[orig_patent_app_number] => 10329874 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/329874
Start up system and method for a fuel cell power plant using a cathode electrode fuel purge Dec 25, 2002 Issued
Array ( [id] => 6761046 [patent_doc_number] => 20030124407 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-07-03 [patent_title] => 'Fuel cell stack' [patent_app_type] => new [patent_app_number] => 10/329117 [patent_app_country] => US [patent_app_date] => 2002-12-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 11 [patent_no_of_words] => 5028 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 172 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0124/20030124407.pdf [firstpage_image] =>[orig_patent_app_number] => 10329117 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/329117
Fuel cell stack having a bypass flow passage Dec 23, 2002 Issued
Array ( [id] => 6761039 [patent_doc_number] => 20030124400 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-07-03 [patent_title] => 'Fuel cell power generation system and control method thereof' [patent_app_type] => new [patent_app_number] => 10/326275 [patent_app_country] => US [patent_app_date] => 2002-12-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 6110 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 229 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0124/20030124400.pdf [firstpage_image] =>[orig_patent_app_number] => 10326275 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/326275
Fuel cell power generation system and control method thereof Dec 22, 2002 Issued
Array ( [id] => 6846555 [patent_doc_number] => 20030165722 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-09-04 [patent_title] => 'Microemulsion compositions for fuel cell reformer start-up' [patent_app_type] => new [patent_app_number] => 10/324209 [patent_app_country] => US [patent_app_date] => 2002-12-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 4496 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0165/20030165722.pdf [firstpage_image] =>[orig_patent_app_number] => 10324209 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/324209
Microemulsion compositions for fuel cell reformer start-up Dec 19, 2002 Abandoned
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