Search

Ngan V. Ngo

Examiner (ID: 3789, Phone: (571)272-1711 , Office: P/2819 )

Most Active Art Unit
2503
Art Unit(s)
2503, 2814, 2818, 2819, 2893, 2811
Total Applications
3475
Issued Applications
2900
Pending Applications
46
Abandoned Applications
536

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 2066071 [patent_doc_number] => 04459179 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1984-07-10 [patent_title] => 'Separation of isopropyl ether from acetone by extractive distillation' [patent_app_type] => 1 [patent_app_number] => 6/456321 [patent_app_country] => US [patent_app_date] => 1983-01-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4253 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 90 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/459/04459179.pdf [firstpage_image] =>[orig_patent_app_number] => 456321 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/456321
Separation of isopropyl ether from acetone by extractive distillation Jan 5, 1983 Issued
Array ( [id] => 2042618 [patent_doc_number] => 04404064 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-09-13 [patent_title] => 'Water extractive distillation of olefinically unsaturated nitriles' [patent_app_type] => 1 [patent_app_number] => 6/454752 [patent_app_country] => US [patent_app_date] => 1982-12-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 3551 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 256 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/404/04404064.pdf [firstpage_image] =>[orig_patent_app_number] => 454752 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/454752
Water extractive distillation of olefinically unsaturated nitriles Dec 29, 1982 Issued
Array ( [id] => 2173738 [patent_doc_number] => 04556457 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1985-12-03 [patent_title] => 'Safety control device for vapor generating and recovering apparatus' [patent_app_type] => 1 [patent_app_number] => 6/453218 [patent_app_country] => US [patent_app_date] => 1982-12-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 1815 [patent_no_of_claims] => 3 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 266 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/556/04556457.pdf [firstpage_image] =>[orig_patent_app_number] => 453218 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/453218
Safety control device for vapor generating and recovering apparatus Dec 26, 1982 Issued
Array ( [id] => 2206069 [patent_doc_number] => 04544776 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1985-10-01 [patent_title] => 'Process for separating methanol from the reaction products obtained in the etherification of C.sub.4 through C.sub.7 isoolefins with methanol' [patent_app_type] => 1 [patent_app_number] => 6/451707 [patent_app_country] => US [patent_app_date] => 1982-12-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 5363 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 164 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/544/04544776.pdf [firstpage_image] =>[orig_patent_app_number] => 451707 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/451707
Process for separating methanol from the reaction products obtained in the etherification of C.sub.4 through C.sub.7 isoolefins with methanol Dec 19, 1982 Issued
Array ( [id] => 2173794 [patent_doc_number] => 04556461 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1985-12-03 [patent_title] => 'Process for separating highly pure butene-1 or butene-1/isobutene mixture from C.sub.4 hydrocarbon fraction' [patent_app_type] => 1 [patent_app_number] => 6/445974 [patent_app_country] => US [patent_app_date] => 1982-12-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 3340 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 141 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/556/04556461.pdf [firstpage_image] =>[orig_patent_app_number] => 445974 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/445974
Process for separating highly pure butene-1 or butene-1/isobutene mixture from C.sub.4 hydrocarbon fraction Nov 30, 1982 Issued
Array ( [id] => 2182138 [patent_doc_number] => 04555312 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1985-11-26 [patent_title] => 'Process for separating highly pure butene-1 or butene-1/isobutene mixture from C.sub.4 hydrocarbon fraction' [patent_app_type] => 1 [patent_app_number] => 6/444039 [patent_app_country] => US [patent_app_date] => 1982-11-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 3289 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 135 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/555/04555312.pdf [firstpage_image] =>[orig_patent_app_number] => 444039 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/444039
Process for separating highly pure butene-1 or butene-1/isobutene mixture from C.sub.4 hydrocarbon fraction Nov 22, 1982 Issued
Array ( [id] => 2217456 [patent_doc_number] => 04595459 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1986-06-17 [patent_title] => 'Desalinization apparatus' [patent_app_type] => 1 [patent_app_number] => 6/441002 [patent_app_country] => US [patent_app_date] => 1982-11-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 5541 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 179 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/595/04595459.pdf [firstpage_image] =>[orig_patent_app_number] => 441002 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/441002
Desalinization apparatus Nov 11, 1982 Issued
Array ( [id] => 2113851 [patent_doc_number] => 04479851 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1984-10-30 [patent_title] => 'Purification of video disc lubricant additives' [patent_app_type] => 1 [patent_app_number] => 6/440452 [patent_app_country] => US [patent_app_date] => 1982-11-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 2708 [patent_no_of_claims] => 5 [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/04/479/04479851.pdf [firstpage_image] =>[orig_patent_app_number] => 440452 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/440452
Purification of video disc lubricant additives Nov 9, 1982 Issued
Array ( [id] => 2036475 [patent_doc_number] => 04414074 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-11-08 [patent_title] => 'Process for the purification of 4,4\'-diisocyanatodiphenylmethane by plural distillations' [patent_app_type] => 1 [patent_app_number] => 6/436489 [patent_app_country] => US [patent_app_date] => 1982-10-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 3 [patent_no_of_words] => 3752 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 281 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/414/04414074.pdf [firstpage_image] =>[orig_patent_app_number] => 436489 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/436489
Process for the purification of 4,4'-diisocyanatodiphenylmethane by plural distillations Oct 24, 1982 Issued
06/436050 PROCESS AND DEVICE FOR REMOVING SOLVENTS FROM BULK MATERIAL Oct 21, 1982 Abandoned
Array ( [id] => 2195201 [patent_doc_number] => 04495028 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1985-01-22 [patent_title] => 'Process control for flash concentrating solutions containing polyolefins' [patent_app_type] => 1 [patent_app_number] => 6/427247 [patent_app_country] => US [patent_app_date] => 1982-09-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 5432 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 172 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/495/04495028.pdf [firstpage_image] =>[orig_patent_app_number] => 427247 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/427247
Process control for flash concentrating solutions containing polyolefins Sep 28, 1982 Issued
Array ( [id] => 2438177 [patent_doc_number] => 04778535 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1988-10-18 [patent_title] => 'Vapor generating and recovery apparatus and process' [patent_app_type] => 1 [patent_app_number] => 6/425166 [patent_app_country] => US [patent_app_date] => 1982-09-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 3206 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 120 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/778/04778535.pdf [firstpage_image] =>[orig_patent_app_number] => 425166 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/425166
Vapor generating and recovery apparatus and process Sep 27, 1982 Issued
Array ( [id] => 2234708 [patent_doc_number] => 04572767 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1986-02-25 [patent_title] => 'Vapor generating and recovery apparatus' [patent_app_type] => 1 [patent_app_number] => 6/425167 [patent_app_country] => US [patent_app_date] => 1982-09-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 9 [patent_no_of_words] => 4395 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 150 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/572/04572767.pdf [firstpage_image] =>[orig_patent_app_number] => 425167 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/425167
Vapor generating and recovery apparatus Sep 27, 1982 Issued
06/424561 METHOD OF SEPARATING A MIXED LIQUID INTO LIGHT AND HEAVY FRACTIONS BY DISTILLATION Sep 26, 1982 Abandoned
Array ( [id] => 2147708 [patent_doc_number] => 04539076 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1985-09-03 [patent_title] => 'Vapor compression distillation system' [patent_app_type] => 1 [patent_app_number] => 6/424047 [patent_app_country] => US [patent_app_date] => 1982-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 4931 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 489 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/539/04539076.pdf [firstpage_image] =>[orig_patent_app_number] => 424047 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/424047
Vapor compression distillation system Sep 26, 1982 Issued
Array ( [id] => 2072211 [patent_doc_number] => 04470881 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1984-09-11 [patent_title] => 'Separation of ethyl acetate from methyl ethyl ketone by extractive distillation' [patent_app_type] => 1 [patent_app_number] => 6/424827 [patent_app_country] => US [patent_app_date] => 1982-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 9756 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/470/04470881.pdf [firstpage_image] =>[orig_patent_app_number] => 424827 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/424827
Separation of ethyl acetate from methyl ethyl ketone by extractive distillation Sep 26, 1982 Issued
Array ( [id] => 2360531 [patent_doc_number] => 04666562 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1987-05-19 [patent_title] => 'Solvent recovery from solvent process material mixtures' [patent_app_type] => 1 [patent_app_number] => 6/424393 [patent_app_country] => US [patent_app_date] => 1982-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 2889 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/666/04666562.pdf [firstpage_image] =>[orig_patent_app_number] => 424393 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/424393
Solvent recovery from solvent process material mixtures Sep 26, 1982 Issued
Array ( [id] => 2042609 [patent_doc_number] => 04404063 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-09-13 [patent_title] => 'Method for the separation of indole' [patent_app_type] => 1 [patent_app_number] => 6/423094 [patent_app_country] => US [patent_app_date] => 1982-09-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2789 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 72 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/404/04404063.pdf [firstpage_image] =>[orig_patent_app_number] => 423094 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/423094
Method for the separation of indole Sep 23, 1982 Issued
Array ( [id] => 2016640 [patent_doc_number] => 04402796 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-09-06 [patent_title] => 'Separation of chlorosilanes by liquid extraction' [patent_app_type] => 1 [patent_app_number] => 6/419855 [patent_app_country] => US [patent_app_date] => 1982-09-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 3915 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 151 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/402/04402796.pdf [firstpage_image] =>[orig_patent_app_number] => 419855 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/419855
Separation of chlorosilanes by liquid extraction Sep 19, 1982 Issued
Array ( [id] => 2016643 [patent_doc_number] => 04402797 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1983-09-06 [patent_title] => 'Separation of chlorosilanes by extractive distillation' [patent_app_type] => 1 [patent_app_number] => 6/419856 [patent_app_country] => US [patent_app_date] => 1982-09-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2793 [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] => patent [pdf_file] => patents/04/402/04402797.pdf [firstpage_image] =>[orig_patent_app_number] => 419856 [rel_patent_id] =>[rel_patent_doc_number] =>)
06/419856
Separation of chlorosilanes by extractive distillation Sep 19, 1982 Issued
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