Search

Duc M. Nguyen

Examiner (ID: 11247, Phone: (571)272-7893 , Office: P/2647 )

Most Active Art Unit
2618
Art Unit(s)
2682, 2618, 2745, 2600, 2685, 2648, 2647
Total Applications
1320
Issued Applications
996
Pending Applications
59
Abandoned Applications
270

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 2709167 [patent_doc_number] => 04992618 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-02-12 [patent_title] => 'Adsorptive separation process for the purification of heavy normal paraffins with non-normal hydrocarbon pre-pulse stream' [patent_app_type] => 1 [patent_app_number] => 7/391747 [patent_app_country] => US [patent_app_date] => 1989-08-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 7717 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 118 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/992/04992618.pdf [firstpage_image] =>[orig_patent_app_number] => 391747 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/391747
Adsorptive separation process for the purification of heavy normal paraffins with non-normal hydrocarbon pre-pulse stream Aug 8, 1989 Issued
Array ( [id] => 2619694 [patent_doc_number] => 04950385 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-08-21 [patent_title] => 'Reforming process for the catalytic conversion of petroleum fractions to a mixture of hydrocarbons rich in aromatics' [patent_app_type] => 1 [patent_app_number] => 7/377539 [patent_app_country] => US [patent_app_date] => 1989-07-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 5324 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 188 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/950/04950385.pdf [firstpage_image] =>[orig_patent_app_number] => 377539 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/377539
Reforming process for the catalytic conversion of petroleum fractions to a mixture of hydrocarbons rich in aromatics Jul 9, 1989 Issued
Array ( [id] => 2588086 [patent_doc_number] => 04933067 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-06-12 [patent_title] => 'Pipelineable syncrude (synthetic crude) from heavy oil' [patent_app_type] => 1 [patent_app_number] => 7/375063 [patent_app_country] => US [patent_app_date] => 1989-06-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2559 [patent_no_of_claims] => 10 [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/04/933/04933067.pdf [firstpage_image] =>[orig_patent_app_number] => 375063 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/375063
Pipelineable syncrude (synthetic crude) from heavy oil Jun 29, 1989 Issued
Array ( [id] => 2613026 [patent_doc_number] => 04943367 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-07-24 [patent_title] => 'Process for the production of high purity coke from coal' [patent_app_type] => 1 [patent_app_number] => 7/370166 [patent_app_country] => US [patent_app_date] => 1989-06-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 4671 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 212 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/943/04943367.pdf [firstpage_image] =>[orig_patent_app_number] => 370166 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/370166
Process for the production of high purity coke from coal Jun 20, 1989 Issued
07/362345 ORGANONITROGEN SALTS OF THIOCARBONIC ACIDS AND USES THEREOF Jun 5, 1989 Abandoned
Array ( [id] => 2599039 [patent_doc_number] => 04948569 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-08-14 [patent_title] => 'Apparatus for catalytic cracking of a hydrocarbon charge subjected to a pretreatment with solid particles of low activity' [patent_app_type] => 1 [patent_app_number] => 7/354584 [patent_app_country] => US [patent_app_date] => 1989-05-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 7 [patent_no_of_words] => 6302 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 306 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/948/04948569.pdf [firstpage_image] =>[orig_patent_app_number] => 354584 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/354584
Apparatus for catalytic cracking of a hydrocarbon charge subjected to a pretreatment with solid particles of low activity May 21, 1989 Issued
Array ( [id] => 2636558 [patent_doc_number] => 04952750 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-08-28 [patent_title] => 'Process for making p-xylene with a purity of at least 99.5%' [patent_app_type] => 1 [patent_app_number] => 7/339233 [patent_app_country] => US [patent_app_date] => 1989-04-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 2208 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 163 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/952/04952750.pdf [firstpage_image] =>[orig_patent_app_number] => 339233 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/339233
Process for making p-xylene with a purity of at least 99.5% Apr 13, 1989 Issued
Array ( [id] => 2652327 [patent_doc_number] => 04961840 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-10-09 [patent_title] => 'Antifoam process for delayed coking' [patent_app_type] => 1 [patent_app_number] => 7/337252 [patent_app_country] => US [patent_app_date] => 1989-04-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 3935 [patent_no_of_claims] => 27 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 117 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/961/04961840.pdf [firstpage_image] =>[orig_patent_app_number] => 337252 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/337252
Antifoam process for delayed coking Apr 12, 1989 Issued
Array ( [id] => 2665151 [patent_doc_number] => 04983278 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-01-08 [patent_title] => 'Pyrolysis methods with product oil recycling' [patent_app_type] => 1 [patent_app_number] => 7/333838 [patent_app_country] => US [patent_app_date] => 1989-04-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 14 [patent_no_of_words] => 17348 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 167 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/983/04983278.pdf [firstpage_image] =>[orig_patent_app_number] => 333838 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/333838
Pyrolysis methods with product oil recycling Apr 2, 1989 Issued
Array ( [id] => 2701481 [patent_doc_number] => 04981574 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-01-01 [patent_title] => 'Dewaxing process' [patent_app_type] => 1 [patent_app_number] => 7/322880 [patent_app_country] => US [patent_app_date] => 1989-03-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 5057 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 162 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/981/04981574.pdf [firstpage_image] =>[orig_patent_app_number] => 322880 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/322880
Dewaxing process Mar 13, 1989 Issued
Array ( [id] => 2659657 [patent_doc_number] => 04929796 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-05-29 [patent_title] => 'Separation of 2,7 diisopropylnaphthalene from a feed mixture comprising various diisopropylnaphthalene isomers with a zeolite adsorbent' [patent_app_type] => 1 [patent_app_number] => 7/322329 [patent_app_country] => US [patent_app_date] => 1989-03-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 7802 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 71 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/929/04929796.pdf [firstpage_image] =>[orig_patent_app_number] => 322329 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/322329
Separation of 2,7 diisopropylnaphthalene from a feed mixture comprising various diisopropylnaphthalene isomers with a zeolite adsorbent Mar 9, 1989 Issued
Array ( [id] => 2709186 [patent_doc_number] => 04992619 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-02-12 [patent_title] => 'Process for separating methyl substituted naphthalene by crystallization under pressure' [patent_app_type] => 1 [patent_app_number] => 7/320008 [patent_app_country] => US [patent_app_date] => 1989-03-07 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 3506 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 31 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/992/04992619.pdf [firstpage_image] =>[orig_patent_app_number] => 320008 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/320008
Process for separating methyl substituted naphthalene by crystallization under pressure Mar 6, 1989 Issued
Array ( [id] => 2660645 [patent_doc_number] => 04962270 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-10-09 [patent_title] => 'Multi-stage pervaporation process run at progressively higher vacuum, higher temperature or both at each successive retentate stage' [patent_app_type] => 1 [patent_app_number] => 7/315867 [patent_app_country] => US [patent_app_date] => 1989-02-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2883 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 131 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/962/04962270.pdf [firstpage_image] =>[orig_patent_app_number] => 315867 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/315867
Multi-stage pervaporation process run at progressively higher vacuum, higher temperature or both at each successive retentate stage Feb 26, 1989 Issued
Array ( [id] => 2660608 [patent_doc_number] => 04962268 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-10-09 [patent_title] => 'Alkylation catalyst isolation' [patent_app_type] => 1 [patent_app_number] => 7/314676 [patent_app_country] => US [patent_app_date] => 1989-02-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 2332 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 134 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/962/04962268.pdf [firstpage_image] =>[orig_patent_app_number] => 314676 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/314676
Alkylation catalyst isolation Feb 21, 1989 Issued
Array ( [id] => 2654133 [patent_doc_number] => 04978439 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-12-18 [patent_title] => 'Desulphurisation using solid sorbents' [patent_app_type] => 1 [patent_app_number] => 7/311830 [patent_app_country] => US [patent_app_date] => 1989-02-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 4421 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 157 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/978/04978439.pdf [firstpage_image] =>[orig_patent_app_number] => 311830 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/311830
Desulphurisation using solid sorbents Feb 16, 1989 Issued
Array ( [id] => 2659712 [patent_doc_number] => 04929799 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-05-29 [patent_title] => 'Isomerization process' [patent_app_type] => 1 [patent_app_number] => 7/311399 [patent_app_country] => US [patent_app_date] => 1989-02-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 9195 [patent_no_of_claims] => 29 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 266 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/929/04929799.pdf [firstpage_image] =>[orig_patent_app_number] => 311399 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/311399
Isomerization process Feb 15, 1989 Issued
Array ( [id] => 2596445 [patent_doc_number] => 04940831 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-07-10 [patent_title] => 'Purification of cis-olefins' [patent_app_type] => 1 [patent_app_number] => 7/312103 [patent_app_country] => US [patent_app_date] => 1989-02-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4617 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 71 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/940/04940831.pdf [firstpage_image] =>[orig_patent_app_number] => 312103 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/312103
Purification of cis-olefins Feb 14, 1989 Issued
07/307193 METHOD OF AND APPARATUS FOR RECOVERING OIL FROM SOLID HYDROCARBONACEOUS MATERIAL Feb 2, 1989 Abandoned
Array ( [id] => 2552371 [patent_doc_number] => 04960508 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-10-02 [patent_title] => 'Two-step heterocyclic nitrogen extraction from petroleum oils' [patent_app_type] => 1 [patent_app_number] => 7/303334 [patent_app_country] => US [patent_app_date] => 1989-01-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 5147 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 181 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/960/04960508.pdf [firstpage_image] =>[orig_patent_app_number] => 303334 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/303334
Two-step heterocyclic nitrogen extraction from petroleum oils Jan 29, 1989 Issued
Array ( [id] => 2628016 [patent_doc_number] => 04952305 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-08-28 [patent_title] => 'Process and apparatus for the separation of hydrocarbons' [patent_app_type] => 1 [patent_app_number] => 7/302282 [patent_app_country] => US [patent_app_date] => 1989-01-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 4889 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 177 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/952/04952305.pdf [firstpage_image] =>[orig_patent_app_number] => 302282 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/302282
Process and apparatus for the separation of hydrocarbons Jan 26, 1989 Issued
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