Search

Keith D. Walker

Supervisory Patent Examiner (ID: 7518, Phone: (571)272-3458 , Office: P/1735 )

Most Active Art Unit
1735
Art Unit(s)
1726, 1745, 1795, 1735
Total Applications
565
Issued Applications
152
Pending Applications
54
Abandoned Applications
362

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 6869744 [patent_doc_number] => 20030082433 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-05-01 [patent_title] => 'Fuel cell and method of controlling the same' [patent_app_type] => new [patent_app_number] => 10/278944 [patent_app_country] => US [patent_app_date] => 2002-10-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 15 [patent_no_of_words] => 8148 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 79 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0082/20030082433.pdf [firstpage_image] =>[orig_patent_app_number] => 10278944 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/278944
Fuel cell and method of controlling the same Oct 23, 2002 Issued
Array ( [id] => 7122224 [patent_doc_number] => 20050014053 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2005-01-20 [patent_title] => 'Fuel cell' [patent_app_type] => utility [patent_app_number] => 10/494668 [patent_app_country] => US [patent_app_date] => 2002-10-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3235 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0014/20050014053.pdf [firstpage_image] =>[orig_patent_app_number] => 10494668 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/494668
Fuel cell Oct 22, 2002 Abandoned
Array ( [id] => 7165701 [patent_doc_number] => 20040076868 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-04-22 [patent_title] => 'Fuel cell and method for forming' [patent_app_type] => new [patent_app_number] => 10/273607 [patent_app_country] => US [patent_app_date] => 2002-10-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 4685 [patent_no_of_claims] => 42 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 44 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0076/20040076868.pdf [firstpage_image] =>[orig_patent_app_number] => 10273607 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/273607
Fuel cell and method for forming Oct 17, 2002 Abandoned
Array ( [id] => 6813449 [patent_doc_number] => 20030072999 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-04-17 [patent_title] => 'Method for manufacturing an electrode-separator assembly for galvanic elements' [patent_app_type] => new [patent_app_number] => 10/268454 [patent_app_country] => US [patent_app_date] => 2002-10-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 3122 [patent_no_of_claims] => 29 [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/A1/0072/20030072999.pdf [firstpage_image] =>[orig_patent_app_number] => 10268454 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/268454
Method for manufacturing an electrode-separator assembly for galvanic elements Oct 9, 2002 Abandoned
Array ( [id] => 7280603 [patent_doc_number] => 20040062980 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-04-01 [patent_title] => 'Fluid management component for use in a fuel cell' [patent_app_type] => new [patent_app_number] => 10/260820 [patent_app_country] => US [patent_app_date] => 2002-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 12 [patent_no_of_words] => 8244 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 107 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0062/20040062980.pdf [firstpage_image] =>[orig_patent_app_number] => 10260820 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/260820
Fluid management component for use in a fuel cell Sep 29, 2002 Abandoned
Array ( [id] => 7773444 [patent_doc_number] => 08119304 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-02-21 [patent_title] => 'Fuel cell with fuel passage layer having a wiring pattern' [patent_app_type] => utility [patent_app_number] => 10/416762 [patent_app_country] => US [patent_app_date] => 2002-09-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 30 [patent_figures_cnt] => 54 [patent_no_of_words] => 13942 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 250 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/08/119/08119304.pdf [firstpage_image] =>[orig_patent_app_number] => 10416762 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/416762
Fuel cell with fuel passage layer having a wiring pattern Sep 24, 2002 Issued
Array ( [id] => 452591 [patent_doc_number] => 07247401 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2007-07-24 [patent_title] => 'Method and apparatus for operating a fuel cell system' [patent_app_type] => utility [patent_app_number] => 10/255128 [patent_app_country] => US [patent_app_date] => 2002-09-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 2319 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 166 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/247/07247401.pdf [firstpage_image] =>[orig_patent_app_number] => 10255128 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/255128
Method and apparatus for operating a fuel cell system Sep 23, 2002 Issued
Array ( [id] => 6674060 [patent_doc_number] => 20030059663 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-03-27 [patent_title] => 'Apparatus for water treatment having electrodeionization device' [patent_app_type] => new [patent_app_number] => 10/252422 [patent_app_country] => US [patent_app_date] => 2002-09-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2156 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 31 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0059/20030059663.pdf [firstpage_image] =>[orig_patent_app_number] => 10252422 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/252422
Apparatus for water treatment having electrodeionization device Sep 23, 2002 Abandoned
Array ( [id] => 7269702 [patent_doc_number] => 20040058220 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-03-25 [patent_title] => 'Fuel cell reactant and byproduct systems' [patent_app_type] => new [patent_app_number] => 10/251244 [patent_app_country] => US [patent_app_date] => 2002-09-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 5208 [patent_no_of_claims] => 60 [patent_no_of_ind_claims] => 11 [patent_words_short_claim] => 33 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0058/20040058220.pdf [firstpage_image] =>[orig_patent_app_number] => 10251244 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/251244
Fuel cell reactant and byproduct systems Sep 19, 2002 Abandoned
Array ( [id] => 7462145 [patent_doc_number] => 20040053090 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-03-18 [patent_title] => 'Fuel cell based battery backup apparatus for storage subsystems' [patent_app_type] => new [patent_app_number] => 10/244575 [patent_app_country] => US [patent_app_date] => 2002-09-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 6536 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 82 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0053/20040053090.pdf [firstpage_image] =>[orig_patent_app_number] => 10244575 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/244575
Fuel cell based battery backup apparatus for storage subsystems Sep 15, 2002 Abandoned
Array ( [id] => 7462438 [patent_doc_number] => 20040053136 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-03-18 [patent_title] => 'Lithium carbide composition, cathode, battery and process' [patent_app_type] => new [patent_app_number] => 10/243532 [patent_app_country] => US [patent_app_date] => 2002-09-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 3603 [patent_no_of_claims] => 66 [patent_no_of_ind_claims] => 7 [patent_words_short_claim] => 32 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0053/20040053136.pdf [firstpage_image] =>[orig_patent_app_number] => 10243532 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/243532
Lithium carbide composition, cathode, battery and process Sep 12, 2002 Abandoned
Array ( [id] => 6683041 [patent_doc_number] => 20030118905 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-06-26 [patent_title] => 'Conductive silicon oxide powder, preparation thereof, and negative electrode material for non-aqueous electrolyte secondary cell' [patent_app_type] => new [patent_app_number] => 10/237089 [patent_app_country] => US [patent_app_date] => 2002-09-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 6635 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 35 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0118/20030118905.pdf [firstpage_image] =>[orig_patent_app_number] => 10237089 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/237089
Conductive silicon oxide powder, preparation thereof, and negative electrode material for non-aqueous electrolyte secondary cell Sep 8, 2002 Abandoned
Array ( [id] => 7134072 [patent_doc_number] => 20040043265 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-03-04 [patent_title] => 'Staged fuel cell with intercooling' [patent_app_type] => new [patent_app_number] => 10/234073 [patent_app_country] => US [patent_app_date] => 2002-09-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 3372 [patent_no_of_claims] => 50 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 76 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0043/20040043265.pdf [firstpage_image] =>[orig_patent_app_number] => 10234073 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/234073
Staged fuel cell with intercooling Sep 3, 2002 Abandoned
Array ( [id] => 6720555 [patent_doc_number] => 20030054243 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-03-20 [patent_title] => 'Non-aqueous electrolyte secondary battery and production method thereof' [patent_app_type] => new [patent_app_number] => 10/231144 [patent_app_country] => US [patent_app_date] => 2002-08-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 10403 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 130 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0054/20030054243.pdf [firstpage_image] =>[orig_patent_app_number] => 10231144 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/231144
Non-aqueous electrolyte secondary battery and production method thereof Aug 29, 2002 Abandoned
Array ( [id] => 4608526 [patent_doc_number] => 07993781 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2011-08-09 [patent_title] => 'Method for making a lithium ion battery dischargeable to zero volts' [patent_app_type] => utility [patent_app_number] => 10/217967 [patent_app_country] => US [patent_app_date] => 2002-08-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 2623 [patent_no_of_claims] => 35 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 156 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/993/07993781.pdf [firstpage_image] =>[orig_patent_app_number] => 10217967 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/217967
Method for making a lithium ion battery dischargeable to zero volts Aug 12, 2002 Issued
Array ( [id] => 7380623 [patent_doc_number] => 20040028972 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-02-12 [patent_title] => 'Method and apparatus for fuel cell thermal management' [patent_app_type] => new [patent_app_number] => 10/216375 [patent_app_country] => US [patent_app_date] => 2002-08-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 864 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 41 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0028/20040028972.pdf [firstpage_image] =>[orig_patent_app_number] => 10216375 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/216375
Method and apparatus for fuel cell thermal management Aug 11, 2002 Abandoned
Array ( [id] => 7397567 [patent_doc_number] => 20040023082 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-02-05 [patent_title] => 'Fuel cell having activation mechanism and method for forming same' [patent_app_type] => new [patent_app_number] => 10/209230 [patent_app_country] => US [patent_app_date] => 2002-07-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2162 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 58 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0023/20040023082.pdf [firstpage_image] =>[orig_patent_app_number] => 10209230 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/209230
Fuel cell having activation mechanism and method for forming same Jul 30, 2002 Abandoned
Array ( [id] => 6720568 [patent_doc_number] => 20030054256 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-03-20 [patent_title] => 'Totally solid type polymer lithium ion secondary battery and manufacturing method of the same' [patent_app_type] => new [patent_app_number] => 10/202628 [patent_app_country] => US [patent_app_date] => 2002-07-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 8487 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0054/20030054256.pdf [firstpage_image] =>[orig_patent_app_number] => 10202628 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/202628
Totally solid type polymer lithium ion secondary battery and manufacturing method of the same Jul 24, 2002 Abandoned
Array ( [id] => 581711 [patent_doc_number] => 07445861 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2008-11-04 [patent_title] => 'Method for detecting abnormality in fuel cell' [patent_app_type] => utility [patent_app_number] => 10/206016 [patent_app_country] => US [patent_app_date] => 2002-07-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 9 [patent_no_of_words] => 8267 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 127 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/445/07445861.pdf [firstpage_image] =>[orig_patent_app_number] => 10206016 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/206016
Method for detecting abnormality in fuel cell Jul 24, 2002 Issued
Array ( [id] => 7396708 [patent_doc_number] => 20040018422 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-01-29 [patent_title] => 'Device including flexible battery and method of producing same' [patent_app_type] => new [patent_app_number] => 10/201272 [patent_app_country] => US [patent_app_date] => 2002-07-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 5156 [patent_no_of_claims] => 46 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 50 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0018/20040018422.pdf [firstpage_image] =>[orig_patent_app_number] => 10201272 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/201272
Device including flexible battery and method of producing same Jul 23, 2002 Abandoned
Menu