Search

Evan H. Langdon

Examiner (ID: 16978)

Most Active Art Unit
3654
Art Unit(s)
3654
Total Applications
586
Issued Applications
403
Pending Applications
5
Abandoned Applications
178

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 2883459 [patent_doc_number] => 05238662 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-08-24 [patent_title] => 'Processes for recovering precious metals' [patent_app_type] => 1 [patent_app_number] => 7/880876 [patent_app_country] => US [patent_app_date] => 1992-05-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 9099 [patent_no_of_claims] => 29 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 92 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/238/05238662.pdf [firstpage_image] =>[orig_patent_app_number] => 880876 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/880876
Processes for recovering precious metals May 10, 1992 Issued
Array ( [id] => 2982645 [patent_doc_number] => 05211933 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-05-18 [patent_title] => 'Method for preparation of LiCoO.sub.2 intercalation compound for use in secondary lithium batteries' [patent_app_type] => 1 [patent_app_number] => 7/876880 [patent_app_country] => US [patent_app_date] => 1992-04-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 2065 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 114 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/211/05211933.pdf [firstpage_image] =>[orig_patent_app_number] => 876880 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/876880
Method for preparation of LiCoO.sub.2 intercalation compound for use in secondary lithium batteries Apr 29, 1992 Issued
07/875340 PROCESS FOR LEACHING GOLD AND SILVER Apr 28, 1992 Abandoned
Array ( [id] => 2914992 [patent_doc_number] => 05234679 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-08-10 [patent_title] => 'Method of refining tungsten hexafluoride containing molybdenum hexafluoride as an impurity' [patent_app_type] => 1 [patent_app_number] => 7/866347 [patent_app_country] => US [patent_app_date] => 1992-04-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1940 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 107 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/234/05234679.pdf [firstpage_image] =>[orig_patent_app_number] => 866347 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/866347
Method of refining tungsten hexafluoride containing molybdenum hexafluoride as an impurity Apr 9, 1992 Issued
Array ( [id] => 2886828 [patent_doc_number] => 05209911 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-05-11 [patent_title] => 'Method of making metal stannates' [patent_app_type] => 1 [patent_app_number] => 7/778192 [patent_app_country] => US [patent_app_date] => 1992-02-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1909 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 63 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/209/05209911.pdf [firstpage_image] =>[orig_patent_app_number] => 778192 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/778192
Method of making metal stannates Feb 26, 1992 Issued
Array ( [id] => 2978723 [patent_doc_number] => 05250274 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-10-05 [patent_title] => 'Process for the production of sodium dichromate' [patent_app_type] => 1 [patent_app_number] => 7/824682 [patent_app_country] => US [patent_app_date] => 1992-01-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 3635 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 187 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/250/05250274.pdf [firstpage_image] =>[orig_patent_app_number] => 824682 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/824682
Process for the production of sodium dichromate Jan 20, 1992 Issued
Array ( [id] => 2948437 [patent_doc_number] => 05221525 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-06-22 [patent_title] => 'Solvent extraction of gallium from acidic solutions containing phosphorus' [patent_app_type] => 1 [patent_app_number] => 7/821764 [patent_app_country] => US [patent_app_date] => 1992-01-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 4471 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 199 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/221/05221525.pdf [firstpage_image] =>[orig_patent_app_number] => 821764 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/821764
Solvent extraction of gallium from acidic solutions containing phosphorus Jan 13, 1992 Issued
Array ( [id] => 2948489 [patent_doc_number] => 05221528 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-06-22 [patent_title] => 'Process for the preparation of sodium chloride' [patent_app_type] => 1 [patent_app_number] => 7/815090 [patent_app_country] => US [patent_app_date] => 1991-12-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2702 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 100 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/221/05221528.pdf [firstpage_image] =>[orig_patent_app_number] => 815090 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/815090
Process for the preparation of sodium chloride Dec 26, 1991 Issued
Array ( [id] => 2975673 [patent_doc_number] => 05250117 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-10-05 [patent_title] => 'Degreasing-cleaning method' [patent_app_type] => 1 [patent_app_number] => 7/812992 [patent_app_country] => US [patent_app_date] => 1991-12-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 8 [patent_no_of_words] => 2536 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 62 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/250/05250117.pdf [firstpage_image] =>[orig_patent_app_number] => 812992 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/812992
Degreasing-cleaning method Dec 23, 1991 Issued
07/808043 PROCESS OF HYDROLYZING GROUP IVB METAL CHLORIDES Dec 11, 1991 Abandoned
Array ( [id] => 2923028 [patent_doc_number] => 05186920 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-02-16 [patent_title] => 'Recovering TiO.sub.2 concentrates from TiO.sub.2 -containing substances' [patent_app_type] => 1 [patent_app_number] => 7/795292 [patent_app_country] => US [patent_app_date] => 1991-11-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2369 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 242 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/186/05186920.pdf [firstpage_image] =>[orig_patent_app_number] => 795292 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/795292
Recovering TiO.sub.2 concentrates from TiO.sub.2 -containing substances Nov 18, 1991 Issued
07/791819 METHOD AND SYSTEM FOR REMOVING CONTAMINANTS Nov 12, 1991 Abandoned
Array ( [id] => 2947648 [patent_doc_number] => 05230744 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-07-27 [patent_title] => 'Method for cleaning bag machinery' [patent_app_type] => 1 [patent_app_number] => 7/788002 [patent_app_country] => US [patent_app_date] => 1991-11-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 4357 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 76 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/230/05230744.pdf [firstpage_image] =>[orig_patent_app_number] => 788002 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/788002
Method for cleaning bag machinery Nov 4, 1991 Issued
Array ( [id] => 2884493 [patent_doc_number] => 05209785 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-05-11 [patent_title] => 'Non-chlorinated solvent dewax process' [patent_app_type] => 1 [patent_app_number] => 7/785576 [patent_app_country] => US [patent_app_date] => 1991-10-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2545 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 110 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/209/05209785.pdf [firstpage_image] =>[orig_patent_app_number] => 785576 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/785576
Non-chlorinated solvent dewax process Oct 29, 1991 Issued
Array ( [id] => 2966614 [patent_doc_number] => 05225000 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-07-06 [patent_title] => 'Method for cleaning closed spaces with ultraviolet rays' [patent_app_type] => 1 [patent_app_number] => 7/784512 [patent_app_country] => US [patent_app_date] => 1991-10-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 3546 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 159 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/225/05225000.pdf [firstpage_image] =>[orig_patent_app_number] => 784512 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/784512
Method for cleaning closed spaces with ultraviolet rays Oct 28, 1991 Issued
Array ( [id] => 2970715 [patent_doc_number] => 05207996 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-05-04 [patent_title] => 'Acid leaching of copper ore heap with fluoroaliphatic surfactant' [patent_app_type] => 1 [patent_app_number] => 7/774201 [patent_app_country] => US [patent_app_date] => 1991-10-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6428 [patent_no_of_claims] => 20 [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/05/207/05207996.pdf [firstpage_image] =>[orig_patent_app_number] => 774201 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/774201
Acid leaching of copper ore heap with fluoroaliphatic surfactant Oct 9, 1991 Issued
Array ( [id] => 2928256 [patent_doc_number] => 05196178 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-03-23 [patent_title] => 'Method of producing dustfree silver nitrate' [patent_app_type] => 1 [patent_app_number] => 7/771552 [patent_app_country] => US [patent_app_date] => 1991-10-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 659 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 78 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/196/05196178.pdf [firstpage_image] =>[orig_patent_app_number] => 771552 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/771552
Method of producing dustfree silver nitrate Oct 7, 1991 Issued
Array ( [id] => 2819378 [patent_doc_number] => 05169610 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1992-12-08 [patent_title] => 'Method for the purification of rare earth oxysulfide' [patent_app_type] => 1 [patent_app_number] => 7/772665 [patent_app_country] => US [patent_app_date] => 1991-10-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1552 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/169/05169610.pdf [firstpage_image] =>[orig_patent_app_number] => 772665 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/772665
Method for the purification of rare earth oxysulfide Oct 6, 1991 Issued
Array ( [id] => 2903365 [patent_doc_number] => 05236513 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-08-17 [patent_title] => 'Process for sucking out and drying the cavities of coated microtiter plates' [patent_app_type] => 1 [patent_app_number] => 7/769712 [patent_app_country] => US [patent_app_date] => 1991-10-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 714 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 105 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/236/05236513.pdf [firstpage_image] =>[orig_patent_app_number] => 769712 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/769712
Process for sucking out and drying the cavities of coated microtiter plates Oct 1, 1991 Issued
Array ( [id] => 2905917 [patent_doc_number] => 05227143 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1993-07-13 [patent_title] => 'Process for the removal of salts from aluminum dross' [patent_app_type] => 1 [patent_app_number] => 7/766035 [patent_app_country] => US [patent_app_date] => 1991-09-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 2999 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 108 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/227/05227143.pdf [firstpage_image] =>[orig_patent_app_number] => 766035 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/766035
Process for the removal of salts from aluminum dross Sep 25, 1991 Issued
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