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] => 7136356 [patent_doc_number] => 20050181274 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2005-08-18 [patent_title] => 'High efficiency horizontal battery' [patent_app_type] => utility [patent_app_number] => 10/781450 [patent_app_country] => US [patent_app_date] => 2004-02-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 1318 [patent_no_of_claims] => 11 [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/A1/0181/20050181274.pdf [firstpage_image] =>[orig_patent_app_number] => 10781450 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/781450
High efficiency horizontal battery Feb 17, 2004 Abandoned
Array ( [id] => 4562404 [patent_doc_number] => 07846591 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2010-12-07 [patent_title] => 'Water management layer on flowfield in PEM fuel cell' [patent_app_type] => utility [patent_app_number] => 10/780025 [patent_app_country] => US [patent_app_date] => 2004-02-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 10 [patent_no_of_words] => 8899 [patent_no_of_claims] => 42 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 187 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/846/07846591.pdf [firstpage_image] =>[orig_patent_app_number] => 10780025 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/780025
Water management layer on flowfield in PEM fuel cell Feb 16, 2004 Issued
Array ( [id] => 7427022 [patent_doc_number] => 20040161645 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-08-19 [patent_title] => 'Method for controlling a fuel cell system and systems for executing the method' [patent_app_type] => new [patent_app_number] => 10/777427 [patent_app_country] => US [patent_app_date] => 2004-02-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 3974 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 29 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0161/20040161645.pdf [firstpage_image] =>[orig_patent_app_number] => 10777427 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/777427
Method for controlling a fuel cell system and systems for executing the method Feb 11, 2004 Abandoned
Array ( [id] => 7303782 [patent_doc_number] => 20040115536 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-06-17 [patent_title] => 'Method for producing electrical conductors, a solar collector, an electrochemical cell and use of conductors produced in this way' [patent_app_type] => new [patent_app_number] => 10/470184 [patent_app_country] => US [patent_app_date] => 2004-02-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2506 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 26 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0115/20040115536.pdf [firstpage_image] =>[orig_patent_app_number] => 10470184 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/470184
Method for producing electrical conductors, a solar collector, an electrochemical cell and use of conductors produced in this way Feb 8, 2004 Abandoned
Array ( [id] => 7149029 [patent_doc_number] => 20040170887 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-09-02 [patent_title] => 'Non-aqueous electrolytic secondary battery' [patent_app_type] => new [patent_app_number] => 10/486127 [patent_app_country] => US [patent_app_date] => 2004-02-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 17 [patent_figures_cnt] => 17 [patent_no_of_words] => 11079 [patent_no_of_claims] => 33 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 85 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0170/20040170887.pdf [firstpage_image] =>[orig_patent_app_number] => 10486127 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/486127
Non-aqueous electrolytic secondary battery Feb 5, 2004 Abandoned
Array ( [id] => 6912115 [patent_doc_number] => 20050175873 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2005-08-11 [patent_title] => 'Passive hydrogen vent for a fuel cell' [patent_app_type] => utility [patent_app_number] => 10/772699 [patent_app_country] => US [patent_app_date] => 2004-02-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2641 [patent_no_of_claims] => 20 [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/A1/0175/20050175873.pdf [firstpage_image] =>[orig_patent_app_number] => 10772699 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/772699
Passive hydrogen vent for a fuel cell Feb 4, 2004 Issued
Array ( [id] => 326405 [patent_doc_number] => 07514175 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2009-04-07 [patent_title] => 'Anode can for battery and manufacturing method thereof' [patent_app_type] => utility [patent_app_number] => 10/765933 [patent_app_country] => US [patent_app_date] => 2004-01-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 14 [patent_no_of_words] => 6841 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 390 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/514/07514175.pdf [firstpage_image] =>[orig_patent_app_number] => 10765933 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/765933
Anode can for battery and manufacturing method thereof Jan 28, 2004 Issued
Array ( [id] => 7327838 [patent_doc_number] => 20040253517 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-12-16 [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] => new [patent_app_number] => 10/767875 [patent_app_country] => US [patent_app_date] => 2004-01-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2234 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 31 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0253/20040253517.pdf [firstpage_image] =>[orig_patent_app_number] => 10767875 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/767875
Method of preparing a negative electrode for a rechargeable lithium battery, method of fabricating a rechargeable lithium battery, and a rechargeable lithium battery Jan 28, 2004 Abandoned
Array ( [id] => 7194871 [patent_doc_number] => 20050164059 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2005-07-28 [patent_title] => 'Local vapor fuel cell' [patent_app_type] => utility [patent_app_number] => 10/762626 [patent_app_country] => US [patent_app_date] => 2004-01-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 5897 [patent_no_of_claims] => 30 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0164/20050164059.pdf [firstpage_image] =>[orig_patent_app_number] => 10762626 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/762626
Local vapor fuel cell Jan 22, 2004 Abandoned
Array ( [id] => 7427142 [patent_doc_number] => 20040161663 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-08-19 [patent_title] => 'Secondary battery and manufacturing system and method therefor' [patent_app_type] => new [patent_app_number] => 10/762525 [patent_app_country] => US [patent_app_date] => 2004-01-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 18 [patent_figures_cnt] => 18 [patent_no_of_words] => 9082 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 108 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0161/20040161663.pdf [firstpage_image] =>[orig_patent_app_number] => 10762525 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/762525
Secondary battery and manufacturing system and method therefor Jan 22, 2004 Abandoned
Array ( [id] => 7251091 [patent_doc_number] => 20040258977 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-12-23 [patent_title] => 'Apparatus for and method of forming seals in fuel cells and fuel cell stacks' [patent_app_type] => new [patent_app_number] => 10/762729 [patent_app_country] => US [patent_app_date] => 2004-01-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 19 [patent_figures_cnt] => 19 [patent_no_of_words] => 19776 [patent_no_of_claims] => 50 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 96 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0258/20040258977.pdf [firstpage_image] =>[orig_patent_app_number] => 10762729 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/762729
Apparatus for and method of forming seals in fuel cells and fuel cell stacks Jan 22, 2004 Abandoned
Array ( [id] => 4491795 [patent_doc_number] => 07955758 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2011-06-07 [patent_title] => 'Membrane electrode assembly prepared by direct spray of catalyst to membrane' [patent_app_type] => utility [patent_app_number] => 10/763633 [patent_app_country] => US [patent_app_date] => 2004-01-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 2589 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 80 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/955/07955758.pdf [firstpage_image] =>[orig_patent_app_number] => 10763633 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/763633
Membrane electrode assembly prepared by direct spray of catalyst to membrane Jan 21, 2004 Issued
Array ( [id] => 6983133 [patent_doc_number] => 20050153203 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2005-07-14 [patent_title] => 'Lead-zinc battery' [patent_app_type] => utility [patent_app_number] => 10/756015 [patent_app_country] => US [patent_app_date] => 2004-01-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 1961 [patent_no_of_claims] => 8 [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/A1/0153/20050153203.pdf [firstpage_image] =>[orig_patent_app_number] => 10756015 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/756015
Lead-zinc battery Jan 12, 2004 Abandoned
Array ( [id] => 6983114 [patent_doc_number] => 20050153184 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2005-07-14 [patent_title] => 'Bipolar plate with cross-linked channels' [patent_app_type] => utility [patent_app_number] => 10/755128 [patent_app_country] => US [patent_app_date] => 2004-01-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 2676 [patent_no_of_claims] => 24 [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/A1/0153/20050153184.pdf [firstpage_image] =>[orig_patent_app_number] => 10755128 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/755128
Bipolar plate with cross-linked channels Jan 8, 2004 Issued
10/752479 Leak resistant battery manifold vent Jan 5, 2004 Abandoned
Array ( [id] => 7201084 [patent_doc_number] => 20040086766 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-05-06 [patent_title] => 'Fuel cells' [patent_app_type] => new [patent_app_number] => 10/467374 [patent_app_country] => US [patent_app_date] => 2003-12-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2004 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 48 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0086/20040086766.pdf [firstpage_image] =>[orig_patent_app_number] => 10467374 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/467374
Fuel cells Dec 21, 2003 Abandoned
Array ( [id] => 216887 [patent_doc_number] => 07611797 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2009-11-03 [patent_title] => 'Lithium secondary battery with safety device' [patent_app_type] => utility [patent_app_number] => 10/737837 [patent_app_country] => US [patent_app_date] => 2003-12-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 3741 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 163 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/611/07611797.pdf [firstpage_image] =>[orig_patent_app_number] => 10737837 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/737837
Lithium secondary battery with safety device Dec 17, 2003 Issued
Array ( [id] => 7149049 [patent_doc_number] => 20040170894 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-09-02 [patent_title] => 'Positive electrode active material for secondary cell and nonaqueous electrolyte secondary cell using the same, and method for analysis of positive electrode active material for secondary cell' [patent_app_type] => new [patent_app_number] => 10/479975 [patent_app_country] => US [patent_app_date] => 2003-12-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 12456 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 101 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0170/20040170894.pdf [firstpage_image] =>[orig_patent_app_number] => 10479975 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/479975
Positive electrode active material for secondary cell and nonaqueous electrolyte secondary cell using the same, and method for analysis of positive electrode active material for secondary cell Dec 11, 2003 Abandoned
Array ( [id] => 7177330 [patent_doc_number] => 20050123810 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2005-06-09 [patent_title] => 'System and method for co-production of hydrogen and electrical energy' [patent_app_type] => utility [patent_app_number] => 10/731373 [patent_app_country] => US [patent_app_date] => 2003-12-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 6389 [patent_no_of_claims] => 41 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0123/20050123810.pdf [firstpage_image] =>[orig_patent_app_number] => 10731373 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/731373
System and method for co-production of hydrogen and electrical energy Dec 8, 2003 Abandoned
Array ( [id] => 7413013 [patent_doc_number] => 20040228061 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-11-18 [patent_title] => 'Protector and lithium secondary battery having the same' [patent_app_type] => new [patent_app_number] => 10/727714 [patent_app_country] => US [patent_app_date] => 2003-12-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 3342 [patent_no_of_claims] => 32 [patent_no_of_ind_claims] => 7 [patent_words_short_claim] => 84 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0228/20040228061.pdf [firstpage_image] =>[orig_patent_app_number] => 10727714 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/727714
Protector and lithium secondary battery having the same Dec 4, 2003 Abandoned
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