
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 number | Title of the application | Filing Date | Status |
|---|---|---|---|
Array
(
[id] => 2575149
[patent_doc_number] => 04958598
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-09-25
[patent_title] => 'Engine emissions control apparatus and method'
[patent_app_type] => 1
[patent_app_number] => 7/419254
[patent_app_country] => US
[patent_app_date] => 1989-10-10
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 5
[patent_figures_cnt] => 10
[patent_no_of_words] => 6568
[patent_no_of_claims] => 16
[patent_no_of_ind_claims] => 3
[patent_words_short_claim] => 102
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/958/04958598.pdf
[firstpage_image] =>[orig_patent_app_number] => 419254
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/419254 | Engine emissions control apparatus and method | Oct 9, 1989 | Issued |
Array
(
[id] => 2676048
[patent_doc_number] => 04989560
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1991-02-05
[patent_title] => 'Automotive engine oil level surveillance system'
[patent_app_type] => 1
[patent_app_number] => 7/416496
[patent_app_country] => US
[patent_app_date] => 1989-10-03
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 7
[patent_figures_cnt] => 10
[patent_no_of_words] => 4409
[patent_no_of_claims] => 4
[patent_no_of_ind_claims] => 1
[patent_words_short_claim] => 204
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/989/04989560.pdf
[firstpage_image] =>[orig_patent_app_number] => 416496
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/416496 | Automotive engine oil level surveillance system | Oct 2, 1989 | Issued |
Array
(
[id] => 2580538
[patent_doc_number] => 04974566
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-12-04
[patent_title] => 'Optimal swirl generation by valve control'
[patent_app_type] => 1
[patent_app_number] => 7/413643
[patent_app_country] => US
[patent_app_date] => 1989-09-28
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 9
[patent_figures_cnt] => 15
[patent_no_of_words] => 4333
[patent_no_of_claims] => 13
[patent_no_of_ind_claims] => 4
[patent_words_short_claim] => 211
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/974/04974566.pdf
[firstpage_image] =>[orig_patent_app_number] => 413643
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/413643 | Optimal swirl generation by valve control | Sep 27, 1989 | Issued |
Array
(
[id] => 2637604
[patent_doc_number] => 04928645
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-05-29
[patent_title] => 'Ceramic composite valve for internal combustion engines and the like'
[patent_app_type] => 1
[patent_app_number] => 7/406997
[patent_app_country] => US
[patent_app_date] => 1989-09-14
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 1
[patent_figures_cnt] => 4
[patent_no_of_words] => 4171
[patent_no_of_claims] => 26
[patent_no_of_ind_claims] => 3
[patent_words_short_claim] => 94
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/928/04928645.pdf
[firstpage_image] =>[orig_patent_app_number] => 406997
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/406997 | Ceramic composite valve for internal combustion engines and the like | Sep 13, 1989 | Issued |
Array
(
[id] => 2676011
[patent_doc_number] => 04989558
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1991-02-05
[patent_title] => 'Spherical rotary valve assembly for an internal combustion engine'
[patent_app_type] => 1
[patent_app_number] => 7/409037
[patent_app_country] => US
[patent_app_date] => 1989-09-14
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 9
[patent_figures_cnt] => 16
[patent_no_of_words] => 4727
[patent_no_of_claims] => 13
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[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/989/04989558.pdf
[firstpage_image] =>[orig_patent_app_number] => 409037
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/409037 | Spherical rotary valve assembly for an internal combustion engine | Sep 13, 1989 | Issued |
Array
(
[id] => 2613313
[patent_doc_number] => 04936272
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-06-26
[patent_title] => 'Prelube system'
[patent_app_type] => 1
[patent_app_number] => 7/405441
[patent_app_country] => US
[patent_app_date] => 1989-09-11
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 2
[patent_figures_cnt] => 8
[patent_no_of_words] => 2733
[patent_no_of_claims] => 10
[patent_no_of_ind_claims] => 1
[patent_words_short_claim] => 402
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/936/04936272.pdf
[firstpage_image] =>[orig_patent_app_number] => 405441
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/405441 | Prelube system | Sep 10, 1989 | Issued |
Array
(
[id] => 2584152
[patent_doc_number] => 04969918
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-11-13
[patent_title] => 'Rotary valve operating mechanism'
[patent_app_type] => 1
[patent_app_number] => 7/403362
[patent_app_country] => US
[patent_app_date] => 1989-09-06
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 4
[patent_figures_cnt] => 10
[patent_no_of_words] => 2730
[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] => patent
[pdf_file] => patents/04/969/04969918.pdf
[firstpage_image] =>[orig_patent_app_number] => 403362
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/403362 | Rotary valve operating mechanism | Sep 5, 1989 | Issued |
Array
(
[id] => 2613454
[patent_doc_number] => 04936280
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-06-26
[patent_title] => 'Electronic dual fuel injection system'
[patent_app_type] => 1
[patent_app_number] => 7/394612
[patent_app_country] => US
[patent_app_date] => 1989-08-16
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 1
[patent_figures_cnt] => 1
[patent_no_of_words] => 1702
[patent_no_of_claims] => 8
[patent_no_of_ind_claims] => 1
[patent_words_short_claim] => 123
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/936/04936280.pdf
[firstpage_image] =>[orig_patent_app_number] => 394612
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/394612 | Electronic dual fuel injection system | Aug 15, 1989 | Issued |
Array
(
[id] => 2569473
[patent_doc_number] => 04926809
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-05-22
[patent_title] => 'Internal combustion engine with rotary valve'
[patent_app_type] => 1
[patent_app_number] => 7/392068
[patent_app_country] => US
[patent_app_date] => 1989-08-10
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 3
[patent_figures_cnt] => 4
[patent_no_of_words] => 1903
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[patent_words_short_claim] => 150
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[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/926/04926809.pdf
[firstpage_image] =>[orig_patent_app_number] => 392068
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/392068 | Internal combustion engine with rotary valve | Aug 9, 1989 | Issued |
Array
(
[id] => 2644029
[patent_doc_number] => 04945867
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-08-07
[patent_title] => 'Two-stroke engine'
[patent_app_type] => 1
[patent_app_number] => 7/391786
[patent_app_country] => US
[patent_app_date] => 1989-08-09
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 18
[patent_figures_cnt] => 31
[patent_no_of_words] => 8348
[patent_no_of_claims] => 37
[patent_no_of_ind_claims] => 1
[patent_words_short_claim] => 203
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/945/04945867.pdf
[firstpage_image] =>[orig_patent_app_number] => 391786
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/391786 | Two-stroke engine | Aug 8, 1989 | Issued |
Array
(
[id] => 2577063
[patent_doc_number] => 04922871
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-05-08
[patent_title] => 'Arrangement for the purification of lubricating oil'
[patent_app_type] => 1
[patent_app_number] => 7/390106
[patent_app_country] => US
[patent_app_date] => 1989-08-08
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 2
[patent_figures_cnt] => 4
[patent_no_of_words] => 1163
[patent_no_of_claims] => 4
[patent_no_of_ind_claims] => 1
[patent_words_short_claim] => 156
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/922/04922871.pdf
[firstpage_image] =>[orig_patent_app_number] => 390106
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/390106 | Arrangement for the purification of lubricating oil | Aug 7, 1989 | Issued |
Array
(
[id] => 2544983
[patent_doc_number] => 04941440
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-07-17
[patent_title] => 'Engine including a piston member having a high top ring groove'
[patent_app_type] => 1
[patent_app_number] => 7/391647
[patent_app_country] => US
[patent_app_date] => 1989-08-07
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 3
[patent_figures_cnt] => 6
[patent_no_of_words] => 4342
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[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/941/04941440.pdf
[firstpage_image] =>[orig_patent_app_number] => 391647
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/391647 | Engine including a piston member having a high top ring groove | Aug 6, 1989 | Issued |
Array
(
[id] => 2637584
[patent_doc_number] => 04928644
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-05-29
[patent_title] => 'Lubrication control'
[patent_app_type] => 1
[patent_app_number] => 7/387358
[patent_app_country] => US
[patent_app_date] => 1989-07-30
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 4
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[patent_no_of_words] => 1704
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[pdf_file] => patents/04/928/04928644.pdf
[firstpage_image] =>[orig_patent_app_number] => 387358
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/387358 | Lubrication control | Jul 29, 1989 | Issued |
Array
(
[id] => 2548069
[patent_doc_number] => 04944265
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-07-31
[patent_title] => 'Oil restricting head gasket construction'
[patent_app_type] => 1
[patent_app_number] => 7/383504
[patent_app_country] => US
[patent_app_date] => 1989-07-24
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 1
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[patent_no_of_words] => 1053
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[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/944/04944265.pdf
[firstpage_image] =>[orig_patent_app_number] => 383504
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/383504 | Oil restricting head gasket construction | Jul 23, 1989 | Issued |
Array
(
[id] => 2765809
[patent_doc_number] => 05092281
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1992-03-03
[patent_title] => 'Hydrogen engine system'
[patent_app_type] => 1
[patent_app_number] => 7/384302
[patent_app_country] => US
[patent_app_date] => 1989-07-24
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 12
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[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/05/092/05092281.pdf
[firstpage_image] =>[orig_patent_app_number] => 384302
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/384302 | Hydrogen engine system | Jul 23, 1989 | Issued |
| 07/383732 | ROTARY VANED VALVES | Jul 20, 1989 | Abandoned |
Array
(
[id] => 2513063
[patent_doc_number] => 04887579
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1989-12-19
[patent_title] => 'LP-Gas carburetion system apparatus and method'
[patent_app_type] => 1
[patent_app_number] => 7/378828
[patent_app_country] => US
[patent_app_date] => 1989-07-12
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 2
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[patent_no_of_words] => 2301
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[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/887/04887579.pdf
[firstpage_image] =>[orig_patent_app_number] => 378828
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/378828 | LP-Gas carburetion system apparatus and method | Jul 11, 1989 | Issued |
Array
(
[id] => 2569561
[patent_doc_number] => 04926814
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-05-22
[patent_title] => 'Crankcase breather and lubrication oil system for an internal combustion engine'
[patent_app_type] => 1
[patent_app_number] => 7/378867
[patent_app_country] => US
[patent_app_date] => 1989-07-12
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 3
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[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/926/04926814.pdf
[firstpage_image] =>[orig_patent_app_number] => 378867
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/378867 | Crankcase breather and lubrication oil system for an internal combustion engine | Jul 11, 1989 | Issued |
Array
(
[id] => 2644061
[patent_doc_number] => 04961408
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-10-09
[patent_title] => 'Pistons for reciprocating machines'
[patent_app_type] => 1
[patent_app_number] => 7/378023
[patent_app_country] => US
[patent_app_date] => 1989-07-11
[patent_effective_date] => 0000-00-00
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[pdf_file] => patents/04/961/04961408.pdf
[firstpage_image] =>[orig_patent_app_number] => 378023
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/378023 | Pistons for reciprocating machines | Jul 10, 1989 | Issued |
Array
(
[id] => 2615885
[patent_doc_number] => 04976226
[patent_country] => US
[patent_kind] => NA
[patent_issue_date] => 1990-12-11
[patent_title] => 'Method for increasing the heat efficiency of a piston combustion engine'
[patent_app_type] => 1
[patent_app_number] => 7/378139
[patent_app_country] => US
[patent_app_date] => 1989-07-11
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[patent_current_assignee] =>[type] => patent
[pdf_file] => patents/04/976/04976226.pdf
[firstpage_image] =>[orig_patent_app_number] => 378139
[rel_patent_id] =>[rel_patent_doc_number] =>) 07/378139 | Method for increasing the heat efficiency of a piston combustion engine | Jul 10, 1989 | Issued |