Search

Thomas C. Barrett

Supervisory Patent Examiner (ID: 15107, Phone: (571)272-4746 , Office: P/3700 )

Most Active Art Unit
3738
Art Unit(s)
3799, 3738, 3700, 3775
Total Applications
415
Issued Applications
210
Pending Applications
106
Abandoned Applications
101

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 2648393 [patent_doc_number] => 04903654 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-27 [patent_title] => 'Lubricating apparatus for engines of vertical crankshaft type' [patent_app_type] => 1 [patent_app_number] => 7/326566 [patent_app_country] => US [patent_app_date] => 1989-03-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 13 [patent_no_of_words] => 3529 [patent_no_of_claims] => 12 [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/04/903/04903654.pdf [firstpage_image] =>[orig_patent_app_number] => 326566 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/326566
Lubricating apparatus for engines of vertical crankshaft type Mar 19, 1989 Issued
Array ( [id] => 2544315 [patent_doc_number] => 04960080 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-10-02 [patent_title] => 'Pollution control apparatus and method for a turbodiesel motor-generator set' [patent_app_type] => 1 [patent_app_number] => 7/316765 [patent_app_country] => US [patent_app_date] => 1989-02-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 4805 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 84 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/960/04960080.pdf [firstpage_image] =>[orig_patent_app_number] => 316765 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/316765
Pollution control apparatus and method for a turbodiesel motor-generator set Feb 27, 1989 Issued
07/314714 VALVE GEAR FOR INTERNAL COMBUSTION ENGINE Feb 22, 1989 Issued
Array ( [id] => 2512634 [patent_doc_number] => 04887556 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-12-19 [patent_title] => 'Arrangement for and method of supplying hydrogen gas' [patent_app_type] => 1 [patent_app_number] => 7/307535 [patent_app_country] => US [patent_app_date] => 1989-02-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 2659 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 107 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/887/04887556.pdf [firstpage_image] =>[orig_patent_app_number] => 307535 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/307535
Arrangement for and method of supplying hydrogen gas Feb 7, 1989 Issued
Array ( [id] => 2584508 [patent_doc_number] => 04940209 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-07-10 [patent_title] => 'Levered fluid drain valve' [patent_app_type] => 1 [patent_app_number] => 7/305070 [patent_app_country] => US [patent_app_date] => 1989-02-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 5 [patent_no_of_words] => 2048 [patent_no_of_claims] => 2 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 230 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/940/04940209.pdf [firstpage_image] =>[orig_patent_app_number] => 305070 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/305070
Levered fluid drain valve Feb 1, 1989 Issued
Array ( [id] => 2589589 [patent_doc_number] => 04901698 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-02-20 [patent_title] => 'Emission control system' [patent_app_type] => 1 [patent_app_number] => 7/304386 [patent_app_country] => US [patent_app_date] => 1989-01-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 3476 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 192 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/901/04901698.pdf [firstpage_image] =>[orig_patent_app_number] => 304386 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/304386
Emission control system Jan 29, 1989 Issued
Array ( [id] => 2604759 [patent_doc_number] => 04955331 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-09-11 [patent_title] => 'Process for the operation of an Otto engine' [patent_app_type] => 1 [patent_app_number] => 7/300129 [patent_app_country] => US [patent_app_date] => 1989-01-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 9 [patent_no_of_words] => 2134 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 59 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/955/04955331.pdf [firstpage_image] =>[orig_patent_app_number] => 300129 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/300129
Process for the operation of an Otto engine Jan 22, 1989 Issued
Array ( [id] => 2571246 [patent_doc_number] => 04907554 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-03-13 [patent_title] => 'Multiple intake poppet valve array for a single port' [patent_app_type] => 1 [patent_app_number] => 7/299987 [patent_app_country] => US [patent_app_date] => 1989-01-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 2510 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 120 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/907/04907554.pdf [firstpage_image] =>[orig_patent_app_number] => 299987 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/299987
Multiple intake poppet valve array for a single port Jan 22, 1989 Issued
Array ( [id] => 2617957 [patent_doc_number] => 04909205 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-03-20 [patent_title] => 'Method and apparatus for changing engine oil' [patent_app_type] => 1 [patent_app_number] => 7/298737 [patent_app_country] => US [patent_app_date] => 1989-01-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 2628 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 47 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/909/04909205.pdf [firstpage_image] =>[orig_patent_app_number] => 298737 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/298737
Method and apparatus for changing engine oil Jan 18, 1989 Issued
Array ( [id] => 2617939 [patent_doc_number] => 04909204 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-03-20 [patent_title] => 'Construction of two-cycle engine lubricating system' [patent_app_type] => 1 [patent_app_number] => 7/298374 [patent_app_country] => US [patent_app_date] => 1989-01-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 6 [patent_no_of_words] => 1115 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 62 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/909/04909204.pdf [firstpage_image] =>[orig_patent_app_number] => 298374 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/298374
Construction of two-cycle engine lubricating system Jan 17, 1989 Issued
Array ( [id] => 2637528 [patent_doc_number] => 04928641 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-05-29 [patent_title] => 'Lubricant supplying system for DOHC type multi-cylinder internal combustion engine' [patent_app_type] => 1 [patent_app_number] => 7/290313 [patent_app_country] => US [patent_app_date] => 1988-12-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 15 [patent_figures_cnt] => 15 [patent_no_of_words] => 7431 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 285 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/928/04928641.pdf [firstpage_image] =>[orig_patent_app_number] => 290313 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/290313
Lubricant supplying system for DOHC type multi-cylinder internal combustion engine Dec 26, 1988 Issued
Array ( [id] => 2754269 [patent_doc_number] => 04984550 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-01-15 [patent_title] => 'Method and a device for feeding of spark ignition engines with a fuel medium' [patent_app_type] => 1 [patent_app_number] => 7/290319 [patent_app_country] => US [patent_app_date] => 1988-12-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 2 [patent_no_of_words] => 1746 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 106 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/984/04984550.pdf [firstpage_image] =>[orig_patent_app_number] => 290319 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/290319
Method and a device for feeding of spark ignition engines with a fuel medium Dec 22, 1988 Issued
Array ( [id] => 2607323 [patent_doc_number] => 04919105 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-04-24 [patent_title] => 'Device for improving mixture distribution in an intake tube of a combustion engine' [patent_app_type] => 1 [patent_app_number] => 7/285676 [patent_app_country] => US [patent_app_date] => 1988-12-16 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 7 [patent_no_of_words] => 2094 [patent_no_of_claims] => 28 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 158 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/919/04919105.pdf [firstpage_image] =>[orig_patent_app_number] => 285676 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/285676
Device for improving mixture distribution in an intake tube of a combustion engine Dec 15, 1988 Issued
Array ( [id] => 2461601 [patent_doc_number] => 04889088 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-12-26 [patent_title] => 'Fluid flow control method and apparatus for a positive displacement engine or compressor' [patent_app_type] => 1 [patent_app_number] => 7/284655 [patent_app_country] => US [patent_app_date] => 1988-12-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 4798 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 174 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/889/04889088.pdf [firstpage_image] =>[orig_patent_app_number] => 284655 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/284655
Fluid flow control method and apparatus for a positive displacement engine or compressor Dec 14, 1988 Issued
Array ( [id] => 2509562 [patent_doc_number] => 04883023 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-11-28 [patent_title] => 'Polymeric membrane air separator for a turbocharger and brake system in a vehicle' [patent_app_type] => 1 [patent_app_number] => 7/284266 [patent_app_country] => US [patent_app_date] => 1988-12-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 2954 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 271 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/883/04883023.pdf [firstpage_image] =>[orig_patent_app_number] => 284266 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/284266
Polymeric membrane air separator for a turbocharger and brake system in a vehicle Dec 13, 1988 Issued
Array ( [id] => 2623861 [patent_doc_number] => 04938191 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-07-03 [patent_title] => 'Induction device for multi-cylinder internal combustion engine' [patent_app_type] => 1 [patent_app_number] => 7/282494 [patent_app_country] => US [patent_app_date] => 1988-12-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 1784 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 213 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/938/04938191.pdf [firstpage_image] =>[orig_patent_app_number] => 282494 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/282494
Induction device for multi-cylinder internal combustion engine Dec 11, 1988 Issued
Array ( [id] => 2508918 [patent_doc_number] => 04877004 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1989-10-31 [patent_title] => 'Internal combustion engine for a vehicle' [patent_app_type] => 1 [patent_app_number] => 7/283227 [patent_app_country] => US [patent_app_date] => 1988-12-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 12 [patent_no_of_words] => 4233 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 168 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/877/04877004.pdf [firstpage_image] =>[orig_patent_app_number] => 283227 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/283227
Internal combustion engine for a vehicle Dec 11, 1988 Issued
Array ( [id] => 2728285 [patent_doc_number] => 04986223 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1991-01-22 [patent_title] => 'Internal combustion engine injection superheated steam' [patent_app_type] => 1 [patent_app_number] => 7/283547 [patent_app_country] => US [patent_app_date] => 1988-12-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 15 [patent_no_of_words] => 3634 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 97 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/986/04986223.pdf [firstpage_image] =>[orig_patent_app_number] => 283547 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/283547
Internal combustion engine injection superheated steam Dec 11, 1988 Issued
Array ( [id] => 2575060 [patent_doc_number] => 04932377 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-06-12 [patent_title] => 'Multivalve cylinder engine' [patent_app_type] => 1 [patent_app_number] => 7/281228 [patent_app_country] => US [patent_app_date] => 1988-12-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 1193 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 0 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/932/04932377.pdf [firstpage_image] =>[orig_patent_app_number] => 281228 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/281228
Multivalve cylinder engine Dec 7, 1988 Issued
Array ( [id] => 2583510 [patent_doc_number] => 04911120 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1990-03-27 [patent_title] => 'Lubrication system for engines' [patent_app_type] => 1 [patent_app_number] => 7/281324 [patent_app_country] => US [patent_app_date] => 1988-12-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 1988 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 140 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/04/911/04911120.pdf [firstpage_image] =>[orig_patent_app_number] => 281324 [rel_patent_id] =>[rel_patent_doc_number] =>)
07/281324
Lubrication system for engines Dec 7, 1988 Issued
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