Search

Ching Chang

Examiner (ID: 13382, 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] => 6806679 [patent_doc_number] => 20030196618 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-10-23 [patent_title] => 'Externally mounted DPCS (differential pressure control system) with position sensor control to reduce frictional and magnetic hysteresis' [patent_app_type] => new [patent_app_number] => 10/281799 [patent_app_country] => US [patent_app_date] => 2002-10-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 3759 [patent_no_of_claims] => 14 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 244 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0196/20030196618.pdf [firstpage_image] =>[orig_patent_app_number] => 10281799 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/281799
Externally mounted DPCS (differential pressure control system) with position sensor control to reduce frictional and magnetic hysteresis Oct 27, 2002 Issued
Array ( [id] => 1342029 [patent_doc_number] => 06571757 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2003-06-03 [patent_title] => 'Variable force solenoid with spool position feedback to control the position of a center mounted spool valve to control the phase angle of cam mounted phaser' [patent_app_type] => B1 [patent_app_number] => 10/281764 [patent_app_country] => US [patent_app_date] => 2002-10-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2803 [patent_no_of_claims] => 16 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 260 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/571/06571757.pdf [firstpage_image] =>[orig_patent_app_number] => 10281764 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/281764
Variable force solenoid with spool position feedback to control the position of a center mounted spool valve to control the phase angle of cam mounted phaser Oct 27, 2002 Issued
Array ( [id] => 1148177 [patent_doc_number] => 06761138 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-07-13 [patent_title] => 'Valve timing control apparatus for internal combustion engine' [patent_app_type] => B2 [patent_app_number] => 10/281327 [patent_app_country] => US [patent_app_date] => 2002-10-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 13 [patent_no_of_words] => 11766 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 342 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/761/06761138.pdf [firstpage_image] =>[orig_patent_app_number] => 10281327 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/281327
Valve timing control apparatus for internal combustion engine Oct 27, 2002 Issued
Array ( [id] => 1196838 [patent_doc_number] => 06722325 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-04-20 [patent_title] => 'Variable valve control apparatus for engine and method thereof' [patent_app_type] => B2 [patent_app_number] => 10/278077 [patent_app_country] => US [patent_app_date] => 2002-10-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 16 [patent_no_of_words] => 4583 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 138 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/722/06722325.pdf [firstpage_image] =>[orig_patent_app_number] => 10278077 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/278077
Variable valve control apparatus for engine and method thereof Oct 22, 2002 Issued
Array ( [id] => 1166774 [patent_doc_number] => 06742483 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-06-01 [patent_title] => 'Assisting device and method for variable valve mechanism' [patent_app_type] => B2 [patent_app_number] => 10/274402 [patent_app_country] => US [patent_app_date] => 2002-10-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 20 [patent_figures_cnt] => 26 [patent_no_of_words] => 10860 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 166 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/742/06742483.pdf [firstpage_image] =>[orig_patent_app_number] => 10274402 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/274402
Assisting device and method for variable valve mechanism Oct 20, 2002 Issued
Array ( [id] => 7157124 [patent_doc_number] => 20040074461 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-04-22 [patent_title] => 'Leakdown plunger' [patent_app_type] => new [patent_app_number] => 10/274519 [patent_app_country] => US [patent_app_date] => 2002-10-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 22 [patent_figures_cnt] => 22 [patent_no_of_words] => 4296 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 55 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0074/20040074461.pdf [firstpage_image] =>[orig_patent_app_number] => 10274519 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/274519
Leakdown plunger Oct 17, 2002 Issued
Array ( [id] => 7157133 [patent_doc_number] => 20040074463 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-04-22 [patent_title] => 'Metering socket' [patent_app_type] => new [patent_app_number] => 10/316262 [patent_app_country] => US [patent_app_date] => 2002-10-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 14 [patent_no_of_words] => 2808 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 74 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0074/20040074463.pdf [firstpage_image] =>[orig_patent_app_number] => 10316262 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/316262
Metering socket Oct 17, 2002 Issued
Array ( [id] => 1196840 [patent_doc_number] => 06722326 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2004-04-20 [patent_title] => 'Variable lift cylinder valve system for internal combustion engine' [patent_app_type] => B1 [patent_app_number] => 10/065403 [patent_app_country] => US [patent_app_date] => 2002-10-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 4 [patent_no_of_words] => 2280 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 194 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/722/06722326.pdf [firstpage_image] =>[orig_patent_app_number] => 10065403 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/065403
Variable lift cylinder valve system for internal combustion engine Oct 13, 2002 Issued
Array ( [id] => 1193265 [patent_doc_number] => 06725819 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-04-27 [patent_title] => 'Rocker lever ball socket retainer' [patent_app_type] => B2 [patent_app_number] => 10/269783 [patent_app_country] => US [patent_app_date] => 2002-10-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 10 [patent_no_of_words] => 4975 [patent_no_of_claims] => 2 [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/06/725/06725819.pdf [firstpage_image] =>[orig_patent_app_number] => 10269783 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/269783
Rocker lever ball socket retainer Oct 13, 2002 Issued
Array ( [id] => 1107784 [patent_doc_number] => 06805083 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-10-19 [patent_title] => 'Cam cover gasket' [patent_app_type] => B2 [patent_app_number] => 10/065368 [patent_app_country] => US [patent_app_date] => 2002-10-10 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 13 [patent_no_of_words] => 2328 [patent_no_of_claims] => 30 [patent_no_of_ind_claims] => 10 [patent_words_short_claim] => 66 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/805/06805083.pdf [firstpage_image] =>[orig_patent_app_number] => 10065368 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/065368
Cam cover gasket Oct 9, 2002 Issued
Array ( [id] => 1138631 [patent_doc_number] => 06772720 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-08-10 [patent_title] => 'Valve timing control device for internal combustion engine' [patent_app_type] => B2 [patent_app_number] => 10/265690 [patent_app_country] => US [patent_app_date] => 2002-10-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 27 [patent_no_of_words] => 11273 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 158 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/772/06772720.pdf [firstpage_image] =>[orig_patent_app_number] => 10265690 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/265690
Valve timing control device for internal combustion engine Oct 7, 2002 Issued
Array ( [id] => 952916 [patent_doc_number] => 06957634 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-10-25 [patent_title] => 'Engine valve actuator' [patent_app_type] => utility [patent_app_number] => 10/263799 [patent_app_country] => US [patent_app_date] => 2002-10-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 4195 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 185 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/957/06957634.pdf [firstpage_image] =>[orig_patent_app_number] => 10263799 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/263799
Engine valve actuator Oct 3, 2002 Issued
Array ( [id] => 7428500 [patent_doc_number] => 20040065285 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2004-04-08 [patent_title] => 'Variable engine valve actuator' [patent_app_type] => new [patent_app_number] => 10/263798 [patent_app_country] => US [patent_app_date] => 2002-10-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 5419 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 27 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0065/20040065285.pdf [firstpage_image] =>[orig_patent_app_number] => 10263798 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/263798
Variable engine valve actuator Oct 3, 2002 Abandoned
Array ( [id] => 7188031 [patent_doc_number] => 20050039709 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2005-02-24 [patent_title] => 'Method for linking elements to hollow shafts, preferably for producing camshafts, and resulting camshaft' [patent_app_type] => utility [patent_app_number] => 10/492866 [patent_app_country] => US [patent_app_date] => 2002-10-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2355 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 11 [patent_words_short_claim] => 0 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0039/20050039709.pdf [firstpage_image] =>[orig_patent_app_number] => 10492866 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/492866
Method for linking element to hollow shafts, preferably for producing camshafts, and resulting camshaft Oct 3, 2002 Issued
Array ( [id] => 770333 [patent_doc_number] => 07000582 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2006-02-21 [patent_title] => 'Rocker arm' [patent_app_type] => utility [patent_app_number] => 10/490848 [patent_app_country] => US [patent_app_date] => 2002-10-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 12 [patent_figures_cnt] => 20 [patent_no_of_words] => 7958 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 171 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/07/000/07000582.pdf [firstpage_image] =>[orig_patent_app_number] => 10490848 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/490848
Rocker arm Oct 2, 2002 Issued
Array ( [id] => 1079473 [patent_doc_number] => 06834628 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-12-28 [patent_title] => 'Mechanical valve play compensation element for a valve drive on a piston combustion engine' [patent_app_type] => B2 [patent_app_number] => 10/181222 [patent_app_country] => US [patent_app_date] => 2002-10-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 8 [patent_no_of_words] => 4108 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 176 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/834/06834628.pdf [firstpage_image] =>[orig_patent_app_number] => 10181222 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/181222
Mechanical valve play compensation element for a valve drive on a piston combustion engine Oct 1, 2002 Issued
Array ( [id] => 6794017 [patent_doc_number] => 20030172890 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-09-18 [patent_title] => 'Multicylinder engine with valve variable actuation, and an improved valve braking device therefor' [patent_app_type] => new [patent_app_number] => 10/259527 [patent_app_country] => US [patent_app_date] => 2002-09-30 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3333 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 26 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0172/20030172890.pdf [firstpage_image] =>[orig_patent_app_number] => 10259527 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/259527
Multicylinder engine with valve variable actuation, and an improved valve braking device therefor Sep 29, 2002 Issued
Array ( [id] => 1190024 [patent_doc_number] => 06729278 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-05-04 [patent_title] => 'Dual coil, dual lift electromechanical valve actuator' [patent_app_type] => B2 [patent_app_number] => 10/065238 [patent_app_country] => US [patent_app_date] => 2002-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 10 [patent_no_of_words] => 4744 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/729/06729278.pdf [firstpage_image] =>[orig_patent_app_number] => 10065238 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/065238
Dual coil, dual lift electromechanical valve actuator Sep 26, 2002 Issued
Array ( [id] => 1261630 [patent_doc_number] => 06655328 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2003-12-02 [patent_title] => 'Method for controlling an electromagnetic valve drive by changing the current direction when supplying the electromagnets with current' [patent_app_type] => B2 [patent_app_number] => 10/254917 [patent_app_country] => US [patent_app_date] => 2002-09-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 3436 [patent_no_of_claims] => 1 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 210 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/655/06655328.pdf [firstpage_image] =>[orig_patent_app_number] => 10254917 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/254917
Method for controlling an electromagnetic valve drive by changing the current direction when supplying the electromagnets with current Sep 25, 2002 Issued
Array ( [id] => 1216468 [patent_doc_number] => 06701879 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-03-09 [patent_title] => 'Internal combustion engine' [patent_app_type] => B2 [patent_app_number] => 10/253232 [patent_app_country] => US [patent_app_date] => 2002-09-24 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2623 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 181 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/701/06701879.pdf [firstpage_image] =>[orig_patent_app_number] => 10253232 [rel_patent_id] =>[rel_patent_doc_number] =>)
10/253232
Internal combustion engine Sep 23, 2002 Issued
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