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] => 6740023 [patent_doc_number] => 20030157392 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-08-21 [patent_title] => 'Fuel cell humidification' [patent_app_type] => new [patent_app_number] => 10/352116 [patent_app_country] => US [patent_app_date] => 2003-01-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 14 [patent_no_of_words] => 8459 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 189 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0157/20030157392.pdf [firstpage_image] =>[orig_patent_app_number] => 10352116 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/352116
Fuel cell humidification system and method Jan 27, 2003 Issued
Array ( [id] => 6821475 [patent_doc_number] => 20030219636 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-11-27 [patent_title] => 'Method and apparatus for supplying an oxidant stream to the cathode of a fuel cell' [patent_app_type] => new [patent_app_number] => 10/352771 [patent_app_country] => US [patent_app_date] => 2003-01-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2643 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 72 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0219/20030219636.pdf [firstpage_image] =>[orig_patent_app_number] => 10352771 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/352771
Method and apparatus for supplying an oxidant stream to the cathode of a fuel cell Jan 26, 2003 Abandoned
Array ( [id] => 7464947 [patent_doc_number] => 20040101755 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-05-27 [patent_title] => 'Electrochemical element and process for its production' [patent_app_type] => new [patent_app_number] => 10/333890 [patent_app_country] => US [patent_app_date] => 2003-01-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 8878 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 24 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0101/20040101755.pdf [firstpage_image] =>[orig_patent_app_number] => 10333890 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/333890
Electrochemical element and process for its production Jan 23, 2003 Abandoned
Array ( [id] => 6787458 [patent_doc_number] => 20030138697 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-07-24 [patent_title] => 'Cathode active material coated with a metal oxide for incorporation into a lithium electrochemical cell' [patent_app_type] => new [patent_app_number] => 10/350384 [patent_app_country] => US [patent_app_date] => 2003-01-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 4539 [patent_no_of_claims] => 26 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 62 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0138/20030138697.pdf [firstpage_image] =>[orig_patent_app_number] => 10350384 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/350384
Cathode active material coated with a metal oxide for incorporation into a lithium electrochemical cell Jan 22, 2003 Abandoned
Array ( [id] => 6683048 [patent_doc_number] => 20030118912 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-06-26 [patent_title] => 'Electrolytic solution for non-aqueous type battery and non-aqueous type secondary battery' [patent_app_type] => new [patent_app_number] => 10/333617 [patent_app_country] => US [patent_app_date] => 2003-01-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 5973 [patent_no_of_claims] => 32 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0118/20030118912.pdf [firstpage_image] =>[orig_patent_app_number] => 10333617 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/333617
Electrolytic solution for non-aqueous type battery and non-aqueous type secondary battery Jan 21, 2003 Abandoned
Array ( [id] => 6851264 [patent_doc_number] => 20030143467 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-07-31 [patent_title] => 'Composite electrolytes based on smectite clays and high dielectric organic liquids and electrodes' [patent_app_type] => new [patent_app_number] => 10/348126 [patent_app_country] => US [patent_app_date] => 2003-01-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 16 [patent_figures_cnt] => 16 [patent_no_of_words] => 6690 [patent_no_of_claims] => 48 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 31 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0143/20030143467.pdf [firstpage_image] =>[orig_patent_app_number] => 10348126 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/348126
Composite electrolytes based on smectite clays and high dielectric organic liquids and electrodes Jan 20, 2003 Abandoned
Array ( [id] => 7593402 [patent_doc_number] => 07651798 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2010-01-26 [patent_title] => 'Fuel cell system with reformer response time correction' [patent_app_type] => utility [patent_app_number] => 10/433664 [patent_app_country] => US [patent_app_date] => 2003-01-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 10 [patent_no_of_words] => 4785 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 287 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/651/07651798.pdf [firstpage_image] =>[orig_patent_app_number] => 10433664 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/433664
Fuel cell system with reformer response time correction Jan 14, 2003 Issued
Array ( [id] => 7323077 [patent_doc_number] => 20040137302 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-07-15 [patent_title] => 'High temperature seal' [patent_app_type] => new [patent_app_number] => 10/341617 [patent_app_country] => US [patent_app_date] => 2003-01-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 2824 [patent_no_of_claims] => 58 [patent_no_of_ind_claims] => 9 [patent_words_short_claim] => 18 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0137/20040137302.pdf [firstpage_image] =>[orig_patent_app_number] => 10341617 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/341617
High temperature seal Jan 12, 2003 Issued
Array ( [id] => 6658752 [patent_doc_number] => 20030134194 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-07-17 [patent_title] => 'Hermetic seals for lithium-ion batteries' [patent_app_type] => new [patent_app_number] => 10/338369 [patent_app_country] => US [patent_app_date] => 2003-01-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2404 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0134/20030134194.pdf [firstpage_image] =>[orig_patent_app_number] => 10338369 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/338369
Hermetic seals for lithium-ion batteries Jan 7, 2003 Abandoned
Array ( [id] => 836797 [patent_doc_number] => 07393612 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2008-07-01 [patent_title] => 'Electrodes, alkaline secondary battery, and method for manufacturing alkaline secondary battery' [patent_app_type] => utility [patent_app_number] => 10/335869 [patent_app_country] => US [patent_app_date] => 2003-01-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 11 [patent_no_of_words] => 39857 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 233 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/393/07393612.pdf [firstpage_image] =>[orig_patent_app_number] => 10335869 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/335869
Electrodes, alkaline secondary battery, and method for manufacturing alkaline secondary battery Jan 2, 2003 Issued
Array ( [id] => 6842813 [patent_doc_number] => 20030148160 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-08-07 [patent_title] => 'Anode-supported tubular solid oxide fuel cell stack and method of fabricating the same' [patent_app_type] => new [patent_app_number] => 10/335317 [patent_app_country] => US [patent_app_date] => 2003-01-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 17 [patent_figures_cnt] => 17 [patent_no_of_words] => 9467 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 400 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0148/20030148160.pdf [firstpage_image] =>[orig_patent_app_number] => 10335317 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/335317
Anode-supported tubular solid oxide fuel cell stack and method of fabricating the same Jan 1, 2003 Abandoned
Array ( [id] => 356122 [patent_doc_number] => 07488557 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2009-02-10 [patent_title] => 'Electrode for lead-acid battery' [patent_app_type] => utility [patent_app_number] => 10/475328 [patent_app_country] => US [patent_app_date] => 2002-12-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 8 [patent_no_of_words] => 5049 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 74 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/488/07488557.pdf [firstpage_image] =>[orig_patent_app_number] => 10475328 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/475328
Electrode for lead-acid battery Dec 23, 2002 Issued
Array ( [id] => 6740043 [patent_doc_number] => 20030157412 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-08-21 [patent_title] => 'Electrolyte and rechargeable lithium battery' [patent_app_type] => new [patent_app_number] => 10/322660 [patent_app_country] => US [patent_app_date] => 2002-12-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 8997 [patent_no_of_claims] => 42 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 24 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0157/20030157412.pdf [firstpage_image] =>[orig_patent_app_number] => 10322660 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/322660
Electrolyte and rechargeable lithium battery Dec 18, 2002 Abandoned
Array ( [id] => 6740032 [patent_doc_number] => 20030157401 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-08-21 [patent_title] => 'Accumulator' [patent_app_type] => new [patent_app_number] => 10/321146 [patent_app_country] => US [patent_app_date] => 2002-12-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 13 [patent_no_of_words] => 3313 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 13 [patent_words_short_claim] => 23 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0157/20030157401.pdf [firstpage_image] =>[orig_patent_app_number] => 10321146 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/321146
Accumulator with cover having tip-safe features Dec 16, 2002 Issued
Array ( [id] => 6808860 [patent_doc_number] => 20030198799 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-10-23 [patent_title] => 'Battery separator' [patent_app_type] => new [patent_app_number] => 10/315216 [patent_app_country] => US [patent_app_date] => 2002-12-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1670 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 38 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0198/20030198799.pdf [firstpage_image] =>[orig_patent_app_number] => 10315216 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/315216
Battery separator Dec 9, 2002 Abandoned
Array ( [id] => 6757770 [patent_doc_number] => 20030121131 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-07-03 [patent_title] => 'Apparatus for producing a grid for a battery plate, and method of producing the same' [patent_app_type] => new [patent_app_number] => 10/305546 [patent_app_country] => US [patent_app_date] => 2002-11-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 7036 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0121/20030121131.pdf [firstpage_image] =>[orig_patent_app_number] => 10305546 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/305546
Apparatus for producing a grid for a battery plate, and method of producing the same Nov 26, 2002 Abandoned
Array ( [id] => 7469892 [patent_doc_number] => 20040096709 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-05-20 [patent_title] => 'Fuel cell system with a dry cathode feed' [patent_app_type] => new [patent_app_number] => 10/295439 [patent_app_country] => US [patent_app_date] => 2002-11-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3993 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 45 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0096/20040096709.pdf [firstpage_image] =>[orig_patent_app_number] => 10295439 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/295439
Fuel cell system with a dry cathode feed Nov 14, 2002 Abandoned
Array ( [id] => 7381392 [patent_doc_number] => 20040081860 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-04-29 [patent_title] => 'Thin-film battery equipment' [patent_app_type] => new [patent_app_number] => 10/284424 [patent_app_country] => US [patent_app_date] => 2002-10-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 8 [patent_no_of_words] => 4994 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 23 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0081/20040081860.pdf [firstpage_image] =>[orig_patent_app_number] => 10284424 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/284424
Thin-film battery equipment Oct 28, 2002 Abandoned
Array ( [id] => 7381403 [patent_doc_number] => 20040081862 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-04-29 [patent_title] => 'Fuel cells using plasma' [patent_app_type] => new [patent_app_number] => 10/282346 [patent_app_country] => US [patent_app_date] => 2002-10-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 4155 [patent_no_of_claims] => 42 [patent_no_of_ind_claims] => 7 [patent_words_short_claim] => 25 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0081/20040081862.pdf [firstpage_image] =>[orig_patent_app_number] => 10282346 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/282346
Fuel cells using plasma Oct 27, 2002 Abandoned
Array ( [id] => 6791799 [patent_doc_number] => 20030087143 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-05-08 [patent_title] => 'Fuel cell separator plate and method for producting it' [patent_app_type] => new [patent_app_number] => 10/279132 [patent_app_country] => US [patent_app_date] => 2002-10-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 4485 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 38 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0087/20030087143.pdf [firstpage_image] =>[orig_patent_app_number] => 10279132 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/279132
Fuel cell separator plate and method for producing it Oct 23, 2002 Issued
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