Search

Keith D. Walker

Supervisory Patent Examiner (ID: 17867, Phone: (571)272-3458 , Office: P/1735 )

Most Active Art Unit
1735
Art Unit(s)
1735, 1795, 1726, 1745
Total Applications
568
Issued Applications
152
Pending Applications
56
Abandoned Applications
363

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 5188294 [patent_doc_number] => 20070166602 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2007-07-19 [patent_title] => 'Bifunctional air electrode' [patent_app_type] => utility [patent_app_number] => 11/634379 [patent_app_country] => US [patent_app_date] => 2006-12-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 7088 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0166/20070166602.pdf [firstpage_image] =>[orig_patent_app_number] => 11634379 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/634379
Bifunctional air electrode Dec 5, 2006 Abandoned
Array ( [id] => 5022570 [patent_doc_number] => 20070148536 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2007-06-28 [patent_title] => 'ASSEMBLABLE SPACER FOR PREPARATION OF BATTERY MODULE' [patent_app_type] => utility [patent_app_number] => 11/566780 [patent_app_country] => US [patent_app_date] => 2006-12-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 4180 [patent_no_of_claims] => 13 [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/A1/0148/20070148536.pdf [firstpage_image] =>[orig_patent_app_number] => 11566780 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/566780
Assemblable spacer for preparation of battery module Dec 4, 2006 Issued
Array ( [id] => 4494457 [patent_doc_number] => 07947389 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2011-05-24 [patent_title] => 'Cartridge frame with connectors for battery pack' [patent_app_type] => utility [patent_app_number] => 11/565742 [patent_app_country] => US [patent_app_date] => 2006-12-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 12 [patent_no_of_words] => 5337 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 139 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/947/07947389.pdf [firstpage_image] =>[orig_patent_app_number] => 11565742 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/565742
Cartridge frame with connectors for battery pack Nov 30, 2006 Issued
Array ( [id] => 4832739 [patent_doc_number] => 20080131285 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2008-06-05 [patent_title] => 'RMC-defined tip blowing slots for turbine blades' [patent_app_type] => utility [patent_app_number] => 11/606598 [patent_app_country] => US [patent_app_date] => 2006-11-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2788 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0131/20080131285.pdf [firstpage_image] =>[orig_patent_app_number] => 11606598 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/606598
RMC-defined tip blowing slots for turbine blades Nov 29, 2006 Abandoned
Array ( [id] => 7545172 [patent_doc_number] => 08053143 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2011-11-08 [patent_title] => 'Supported ruthenium cathode catalyst for fuel cell' [patent_app_type] => utility [patent_app_number] => 11/607336 [patent_app_country] => US [patent_app_date] => 2006-11-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3763 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 53 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/08/053/08053143.pdf [firstpage_image] =>[orig_patent_app_number] => 11607336 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/607336
Supported ruthenium cathode catalyst for fuel cell Nov 29, 2006 Issued
Array ( [id] => 7800804 [patent_doc_number] => 08129074 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-03-06 [patent_title] => 'Crosslinked nano-inorganic particle/polymer electrolyte membrane for membrane electrode assembly' [patent_app_type] => utility [patent_app_number] => 11/600279 [patent_app_country] => US [patent_app_date] => 2006-11-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9099 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/08/129/08129074.pdf [firstpage_image] =>[orig_patent_app_number] => 11600279 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/600279
Crosslinked nano-inorganic particle/polymer electrolyte membrane for membrane electrode assembly Nov 15, 2006 Issued
Array ( [id] => 5179669 [patent_doc_number] => 20070051010 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2007-03-08 [patent_title] => 'Method of preparing a negative electrode for a rechargeable lithium battery, method of fabricating a rechargeable lithium battery, and a rechargeable lithium battery' [patent_app_type] => utility [patent_app_number] => 11/593691 [patent_app_country] => US [patent_app_date] => 2006-11-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2210 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0051/20070051010.pdf [firstpage_image] =>[orig_patent_app_number] => 11593691 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/593691
Method of fabricating an anode and a lithium battery Nov 5, 2006 Issued
Array ( [id] => 7692390 [patent_doc_number] => 20070231643 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2007-10-04 [patent_title] => 'Fuel cell system' [patent_app_type] => utility [patent_app_number] => 11/527480 [patent_app_country] => US [patent_app_date] => 2006-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 3499 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0231/20070231643.pdf [firstpage_image] =>[orig_patent_app_number] => 11527480 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/527480
Fuel cell system Sep 26, 2006 Abandoned
Array ( [id] => 5171644 [patent_doc_number] => 20070072076 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2007-03-29 [patent_title] => 'Lithium-sulphur battery with high specific energy' [patent_app_type] => utility [patent_app_number] => 11/526876 [patent_app_country] => US [patent_app_date] => 2006-09-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 4577 [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/A1/0072/20070072076.pdf [firstpage_image] =>[orig_patent_app_number] => 11526876 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/526876
Lithium-sulphur battery with high specific energy Sep 25, 2006 Abandoned
Array ( [id] => 5428404 [patent_doc_number] => 20090087714 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2009-04-02 [patent_title] => 'Tubular Fuel Cell Module' [patent_app_type] => utility [patent_app_number] => 11/992589 [patent_app_country] => US [patent_app_date] => 2006-09-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 6297 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0087/20090087714.pdf [firstpage_image] =>[orig_patent_app_number] => 11992589 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/992589
Tubular fuel cell with coil current collector Sep 21, 2006 Issued
Array ( [id] => 8410092 [patent_doc_number] => 08273487 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-09-25 [patent_title] => 'Fuel cell system with fuel distillation unit' [patent_app_type] => utility [patent_app_number] => 11/522976 [patent_app_country] => US [patent_app_date] => 2006-09-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 6121 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 209 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 11522976 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/522976
Fuel cell system with fuel distillation unit Sep 18, 2006 Issued
Array ( [id] => 5075057 [patent_doc_number] => 20070015032 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2007-01-18 [patent_title] => 'Method and apparatus for water management of a fuel cell system' [patent_app_type] => utility [patent_app_number] => 11/523475 [patent_app_country] => US [patent_app_date] => 2006-09-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 7184 [patent_no_of_claims] => 6 [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/A1/0015/20070015032.pdf [firstpage_image] =>[orig_patent_app_number] => 11523475 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/523475
Method and apparatus for water management of a fuel cell system Sep 18, 2006 Abandoned
Array ( [id] => 8543097 [patent_doc_number] => 08318385 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-11-27 [patent_title] => 'Process for producing fuel cell electrode' [patent_app_type] => utility [patent_app_number] => 11/522580 [patent_app_country] => US [patent_app_date] => 2006-09-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 10 [patent_no_of_words] => 13575 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 158 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 11522580 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/522580
Process for producing fuel cell electrode Sep 18, 2006 Issued
Array ( [id] => 5446334 [patent_doc_number] => 20090047560 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2009-02-19 [patent_title] => 'FUEL CELL' [patent_app_type] => utility [patent_app_number] => 12/067189 [patent_app_country] => US [patent_app_date] => 2006-09-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 6553 [patent_no_of_claims] => 6 [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/A1/0047/20090047560.pdf [firstpage_image] =>[orig_patent_app_number] => 12067189 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/067189
FUEL CELL Sep 13, 2006 Abandoned
Array ( [id] => 5034495 [patent_doc_number] => 20070099034 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2007-05-03 [patent_title] => 'CELL SAFETY COATING' [patent_app_type] => utility [patent_app_number] => 11/532089 [patent_app_country] => US [patent_app_date] => 2006-09-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 1251 [patent_no_of_claims] => 1 [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/A1/0099/20070099034.pdf [firstpage_image] =>[orig_patent_app_number] => 11532089 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/532089
CELL SAFETY COATING Sep 13, 2006 Abandoned
Array ( [id] => 5435357 [patent_doc_number] => 20090169944 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2009-07-02 [patent_title] => 'FUEL CARTRIDGE FOR FUEL BATTERY AND FUEL BATTERY USING THE SAME' [patent_app_type] => utility [patent_app_number] => 12/066189 [patent_app_country] => US [patent_app_date] => 2006-09-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 6039 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0169/20090169944.pdf [firstpage_image] =>[orig_patent_app_number] => 12066189 [rel_patent_id] =>[rel_patent_doc_number] =>)
12/066189
FUEL CARTRIDGE FOR FUEL BATTERY AND FUEL BATTERY USING THE SAME Sep 6, 2006 Abandoned
Array ( [id] => 8554885 [patent_doc_number] => 08329356 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2012-12-11 [patent_title] => 'Fuel cell microporous layer including particles with a controlled pore size distribution' [patent_app_type] => utility [patent_app_number] => 11/470776 [patent_app_country] => US [patent_app_date] => 2006-09-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2978 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 11470776 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/470776
Fuel cell microporous layer including particles with a controlled pore size distribution Sep 6, 2006 Issued
Array ( [id] => 5688879 [patent_doc_number] => 20060287194 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2006-12-21 [patent_title] => 'Electrode for solid polymer type fuel cell and manufacturing method therefor' [patent_app_type] => utility [patent_app_number] => 11/508958 [patent_app_country] => US [patent_app_date] => 2006-08-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 8244 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0287/20060287194.pdf [firstpage_image] =>[orig_patent_app_number] => 11508958 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/508958
Electrode for solid polymer type fuel cell and manufacturing method therefor Aug 23, 2006 Abandoned
Array ( [id] => 5112813 [patent_doc_number] => 20070196728 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2007-08-23 [patent_title] => 'Cooling system for vehicle battery pack containing double filter device' [patent_app_type] => utility [patent_app_number] => 11/507160 [patent_app_country] => US [patent_app_date] => 2006-08-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 4842 [patent_no_of_claims] => 10 [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/A1/0196/20070196728.pdf [firstpage_image] =>[orig_patent_app_number] => 11507160 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/507160
Battery pack cooling system for vehicle Aug 20, 2006 Issued
Array ( [id] => 4571915 [patent_doc_number] => 07824806 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2010-11-02 [patent_title] => 'Compliant seal structures for protected active metal anodes' [patent_app_type] => utility [patent_app_number] => 11/501676 [patent_app_country] => US [patent_app_date] => 2006-08-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 21 [patent_figures_cnt] => 41 [patent_no_of_words] => 29544 [patent_no_of_claims] => 111 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 193 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/824/07824806.pdf [firstpage_image] =>[orig_patent_app_number] => 11501676 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/501676
Compliant seal structures for protected active metal anodes Aug 7, 2006 Issued
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