Search

Ching Chang

Examiner (ID: 3427, Phone: (571)272-4857 , Office: P/3748 )

Most Active Art Unit
3748
Art Unit(s)
3748, 3746
Total Applications
1871
Issued Applications
1700
Pending Applications
11
Abandoned Applications
170

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 4647838 [patent_doc_number] => 20080035093 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2008-02-14 [patent_title] => 'Electromagnet-Equipped Control Device For An Internal Combustion Engine Valve' [patent_app_type] => utility [patent_app_number] => 11/578317 [patent_app_country] => US [patent_app_date] => 2005-01-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2521 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0035/20080035093.pdf [firstpage_image] =>[orig_patent_app_number] => 11578317 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/578317
Electromagnet-equipped control device for an internal combustion engine valve Jan 26, 2005 Issued
Array ( [id] => 650021 [patent_doc_number] => 07111596 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-09-26 [patent_title] => 'Electromechanical operator for a valve of an internal combustion engine' [patent_app_type] => utility [patent_app_number] => 11/046279 [patent_app_country] => US [patent_app_date] => 2005-01-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 2087 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 232 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/111/07111596.pdf [firstpage_image] =>[orig_patent_app_number] => 11046279 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/046279
Electromechanical operator for a valve of an internal combustion engine Jan 26, 2005 Issued
Array ( [id] => 157164 [patent_doc_number] => 07673598 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2010-03-09 [patent_title] => 'Electric camshaft adjuster' [patent_app_type] => utility [patent_app_number] => 10/598318 [patent_app_country] => US [patent_app_date] => 2005-01-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 10 [patent_no_of_words] => 5292 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 12 [patent_words_short_claim] => 21 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/673/07673598.pdf [firstpage_image] =>[orig_patent_app_number] => 10598318 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/598318
Electric camshaft adjuster Jan 24, 2005 Issued
Array ( [id] => 7015070 [patent_doc_number] => 20050217621 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2005-10-06 [patent_title] => 'Device for varying valve timing in an internal combustion engine' [patent_app_type] => utility [patent_app_number] => 11/041036 [patent_app_country] => US [patent_app_date] => 2005-01-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2641 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0217/20050217621.pdf [firstpage_image] =>[orig_patent_app_number] => 11041036 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/041036
Device for varying valve timing in an internal combustion engine Jan 20, 2005 Issued
Array ( [id] => 5185217 [patent_doc_number] => 20070163523 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2007-07-19 [patent_title] => 'Variable valve actuation mechanism for an internal combustion engine' [patent_app_type] => utility [patent_app_number] => 10/586257 [patent_app_country] => US [patent_app_date] => 2005-01-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 28 [patent_figures_cnt] => 28 [patent_no_of_words] => 16932 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0163/20070163523.pdf [firstpage_image] =>[orig_patent_app_number] => 10586257 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/586257
Variable valve actuation mechanism for an internal combustion engine Jan 18, 2005 Abandoned
Array ( [id] => 7053164 [patent_doc_number] => 20050274335 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2005-12-15 [patent_title] => 'Electromagnetic actuator for controlling a valve of an internal combustion engine and internal combustion engine equipped with such an actuator' [patent_app_type] => utility [patent_app_number] => 11/037479 [patent_app_country] => US [patent_app_date] => 2005-01-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 3309 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 8 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0274/20050274335.pdf [firstpage_image] =>[orig_patent_app_number] => 11037479 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/037479
Electromagnetic actuator for controlling a valve of an internal combustion engine and internal combustion engine equipped with such an actuator Jan 17, 2005 Issued
Array ( [id] => 835390 [patent_doc_number] => 07392775 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2008-07-01 [patent_title] => 'Helical cam device and method' [patent_app_type] => utility [patent_app_number] => 11/037419 [patent_app_country] => US [patent_app_date] => 2005-01-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 8 [patent_no_of_words] => 4470 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/392/07392775.pdf [firstpage_image] =>[orig_patent_app_number] => 11037419 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/037419
Helical cam device and method Jan 17, 2005 Issued
Array ( [id] => 822086 [patent_doc_number] => 07404383 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2008-07-29 [patent_title] => 'Valve train with cam switching for the gas exchange valves of a four-cycle internal combustion engine' [patent_app_type] => utility [patent_app_number] => 10/598128 [patent_app_country] => US [patent_app_date] => 2005-01-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2816 [patent_no_of_claims] => 6 [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/07/404/07404383.pdf [firstpage_image] =>[orig_patent_app_number] => 10598128 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/598128
Valve train with cam switching for the gas exchange valves of a four-cycle internal combustion engine Jan 17, 2005 Issued
Array ( [id] => 6984491 [patent_doc_number] => 20050154522 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2005-07-14 [patent_title] => 'Failure diagnostic apparatus for variable valve mechanism of internal combustion engine and failure diagnostic method for variable valve mechanism' [patent_app_type] => utility [patent_app_number] => 11/035078 [patent_app_country] => US [patent_app_date] => 2005-01-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 23 [patent_figures_cnt] => 23 [patent_no_of_words] => 17271 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0154/20050154522.pdf [firstpage_image] =>[orig_patent_app_number] => 11035078 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/035078
Failure diagnostic apparatus for variable valve mechanism of internal combustion engine and failure diagnostic method for variable valve mechanism Jan 13, 2005 Issued
Array ( [id] => 276938 [patent_doc_number] => 07556003 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2009-07-07 [patent_title] => 'Engine valve operating system' [patent_app_type] => utility [patent_app_number] => 10/585888 [patent_app_country] => US [patent_app_date] => 2005-01-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 13 [patent_no_of_words] => 9023 [patent_no_of_claims] => 10 [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/07/556/07556003.pdf [firstpage_image] =>[orig_patent_app_number] => 10585888 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/585888
Engine valve operating system Jan 12, 2005 Issued
Array ( [id] => 937351 [patent_doc_number] => 06971355 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-12-06 [patent_title] => 'Variable lift and duration device for poppet valves' [patent_app_type] => utility [patent_app_number] => 11/034649 [patent_app_country] => US [patent_app_date] => 2005-01-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 3307 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 294 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/971/06971355.pdf [firstpage_image] =>[orig_patent_app_number] => 11034649 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/034649
Variable lift and duration device for poppet valves Jan 12, 2005 Issued
Array ( [id] => 6980404 [patent_doc_number] => 20050150472 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2005-07-14 [patent_title] => 'Variable valve actuating device' [patent_app_type] => utility [patent_app_number] => 11/028608 [patent_app_country] => US [patent_app_date] => 2005-01-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 3015 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0150/20050150472.pdf [firstpage_image] =>[orig_patent_app_number] => 11028608 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/028608
Variable valve actuating device Jan 4, 2005 Issued
Array ( [id] => 5627888 [patent_doc_number] => 20060144356 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2006-07-06 [patent_title] => 'Method and apparatus for optimized combustion in an internal combustion engine utilizing homogeneous charge compression ignition and variable valve actuation' [patent_app_type] => utility [patent_app_number] => 11/027109 [patent_app_country] => US [patent_app_date] => 2004-12-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 20 [patent_figures_cnt] => 20 [patent_no_of_words] => 6297 [patent_no_of_claims] => 36 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0144/20060144356.pdf [firstpage_image] =>[orig_patent_app_number] => 11027109 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/027109
Method and apparatus for optimized combustion in an internal combustion engine utilizing homogeneous charge compression ignition and variable valve actuation Dec 29, 2004 Issued
Array ( [id] => 409724 [patent_doc_number] => 07281506 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2007-10-16 [patent_title] => 'Oil pressure control apparatus for an internal combustion engine' [patent_app_type] => utility [patent_app_number] => 11/020248 [patent_app_country] => US [patent_app_date] => 2004-12-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 13 [patent_no_of_words] => 4197 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 189 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/281/07281506.pdf [firstpage_image] =>[orig_patent_app_number] => 11020248 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/020248
Oil pressure control apparatus for an internal combustion engine Dec 26, 2004 Issued
Array ( [id] => 375971 [patent_doc_number] => 07311069 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2007-12-25 [patent_title] => 'Variable valve timing control device' [patent_app_type] => utility [patent_app_number] => 11/019399 [patent_app_country] => US [patent_app_date] => 2004-12-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 9 [patent_no_of_words] => 6546 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 267 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/311/07311069.pdf [firstpage_image] =>[orig_patent_app_number] => 11019399 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/019399
Variable valve timing control device Dec 22, 2004 Issued
Array ( [id] => 7100206 [patent_doc_number] => 20050103289 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2005-05-19 [patent_title] => 'Variable valve timing system for an internal combustion engine' [patent_app_type] => utility [patent_app_number] => 11/021074 [patent_app_country] => US [patent_app_date] => 2004-12-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 2669 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0103/20050103289.pdf [firstpage_image] =>[orig_patent_app_number] => 11021074 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/021074
Variable valve timing system for an internal combustion engine Dec 21, 2004 Issued
Array ( [id] => 7100209 [patent_doc_number] => 20050103292 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2005-05-19 [patent_title] => 'VARIABLE VALVE-STROKE CONTROLS' [patent_app_type] => utility [patent_app_number] => 11/019828 [patent_app_country] => US [patent_app_date] => 2004-12-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 3239 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0103/20050103292.pdf [firstpage_image] =>[orig_patent_app_number] => 11019828 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/019828
Variable valve-stroke controls Dec 21, 2004 Issued
Array ( [id] => 183015 [patent_doc_number] => 07647903 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2010-01-19 [patent_title] => 'Variable valve lift device of internal combustion engine' [patent_app_type] => utility [patent_app_number] => 10/584499 [patent_app_country] => US [patent_app_date] => 2004-12-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 10 [patent_figures_cnt] => 10 [patent_no_of_words] => 8698 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 233 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/647/07647903.pdf [firstpage_image] =>[orig_patent_app_number] => 10584499 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/584499
Variable valve lift device of internal combustion engine Dec 20, 2004 Issued
Array ( [id] => 502256 [patent_doc_number] => 07194992 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2007-03-27 [patent_title] => 'Hydraulic cushioning of a variable valve timing mechanism' [patent_app_type] => utility [patent_app_number] => 11/017449 [patent_app_country] => US [patent_app_date] => 2004-12-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 7 [patent_no_of_words] => 7047 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 319 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/194/07194992.pdf [firstpage_image] =>[orig_patent_app_number] => 11017449 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/017449
Hydraulic cushioning of a variable valve timing mechanism Dec 19, 2004 Issued
Array ( [id] => 670002 [patent_doc_number] => 07089897 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-08-15 [patent_title] => 'Electrically driven camshaft adjuster' [patent_app_type] => utility [patent_app_number] => 11/018449 [patent_app_country] => US [patent_app_date] => 2004-12-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 4 [patent_no_of_words] => 4326 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 113 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/089/07089897.pdf [firstpage_image] =>[orig_patent_app_number] => 11018449 [rel_patent_id] =>[rel_patent_doc_number] =>)
11/018449
Electrically driven camshaft adjuster Dec 19, 2004 Issued
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