Search

Henry W Yu

Examiner (ID: 6413, Phone: (571)272-9779 , Office: P/2181 )

Most Active Art Unit
2181
Art Unit(s)
2181, 2182
Total Applications
556
Issued Applications
331
Pending Applications
42
Abandoned Applications
183

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 6590366 [patent_doc_number] => 20020062994 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-05-30 [patent_title] => 'Ground drilling machine and rod exchanger utilized therefor' [patent_app_type] => new [patent_app_number] => 09/988410 [patent_app_country] => US [patent_app_date] => 2001-11-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 22 [patent_figures_cnt] => 22 [patent_no_of_words] => 7158 [patent_no_of_claims] => 6 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 51 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0062/20020062994.pdf [firstpage_image] =>[orig_patent_app_number] => 09988410 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/988410
Ground drilling machine and rod exchanger utilized therefor Nov 18, 2001 Issued
Array ( [id] => 1253539 [patent_doc_number] => 06666271 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2003-12-23 [patent_title] => 'Curved flapper and seat for a subsurface saftey valve' [patent_app_type] => B2 [patent_app_number] => 09/998800 [patent_app_country] => US [patent_app_date] => 2001-11-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 19 [patent_no_of_words] => 5964 [patent_no_of_claims] => 54 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/666/06666271.pdf [firstpage_image] =>[orig_patent_app_number] => 09998800 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/998800
Curved flapper and seat for a subsurface saftey valve Oct 31, 2001 Issued
Array ( [id] => 1243506 [patent_doc_number] => 06675917 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-01-13 [patent_title] => 'Twist drill bit for rock drilling' [patent_app_type] => B2 [patent_app_number] => 09/972285 [patent_app_country] => US [patent_app_date] => 2001-10-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1021 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 127 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/675/06675917.pdf [firstpage_image] =>[orig_patent_app_number] => 09972285 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/972285
Twist drill bit for rock drilling Oct 4, 2001 Issued
Array ( [id] => 6091218 [patent_doc_number] => 20020050361 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-05-02 [patent_title] => 'Novel completion method for rigless intervention where power cable is permanently deployed' [patent_app_type] => new [patent_app_number] => 09/969230 [patent_app_country] => US [patent_app_date] => 2001-10-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 5060 [patent_no_of_claims] => 27 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 82 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0050/20020050361.pdf [firstpage_image] =>[orig_patent_app_number] => 09969230 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/969230
Novel completion method for rigless intervention where power cable is permanently deployed Sep 30, 2001 Abandoned
Array ( [id] => 1200447 [patent_doc_number] => 06719054 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-04-13 [patent_title] => 'Method for acid stimulating a subterranean well formation for improving hydrocarbon production' [patent_app_type] => B2 [patent_app_number] => 09/966129 [patent_app_country] => US [patent_app_date] => 2001-09-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 6 [patent_no_of_words] => 3945 [patent_no_of_claims] => 22 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 91 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/719/06719054.pdf [firstpage_image] =>[orig_patent_app_number] => 09966129 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/966129
Method for acid stimulating a subterranean well formation for improving hydrocarbon production Sep 27, 2001 Issued
Array ( [id] => 1193509 [patent_doc_number] => 06725933 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-04-27 [patent_title] => 'Method and apparatus for acidizing a subterranean well formation for improving hydrocarbon production' [patent_app_type] => B2 [patent_app_number] => 09/966630 [patent_app_country] => US [patent_app_date] => 2001-09-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 6 [patent_no_of_words] => 3689 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 79 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/725/06725933.pdf [firstpage_image] =>[orig_patent_app_number] => 09966630 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/966630
Method and apparatus for acidizing a subterranean well formation for improving hydrocarbon production Sep 27, 2001 Issued
Array ( [id] => 1029259 [patent_doc_number] => 06877553 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2005-04-12 [patent_title] => 'Profiled recess for instrumented expandable components' [patent_app_type] => utility [patent_app_number] => 09/964034 [patent_app_country] => US [patent_app_date] => 2001-09-26 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 3136 [patent_no_of_claims] => 41 [patent_no_of_ind_claims] => 6 [patent_words_short_claim] => 80 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/877/06877553.pdf [firstpage_image] =>[orig_patent_app_number] => 09964034 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/964034
Profiled recess for instrumented expandable components Sep 25, 2001 Issued
Array ( [id] => 1235160 [patent_doc_number] => 06684956 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2004-02-03 [patent_title] => 'Method and apparatus for producing fluids from multiple formations' [patent_app_type] => B1 [patent_app_number] => 09/956716 [patent_app_country] => US [patent_app_date] => 2001-09-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 4379 [patent_no_of_claims] => 26 [patent_no_of_ind_claims] => 8 [patent_words_short_claim] => 149 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/684/06684956.pdf [firstpage_image] =>[orig_patent_app_number] => 09956716 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/956716
Method and apparatus for producing fluids from multiple formations Sep 19, 2001 Issued
Array ( [id] => 1362533 [patent_doc_number] => 06558089 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2003-05-06 [patent_title] => 'Extender assembly for core drill' [patent_app_type] => B2 [patent_app_number] => 09/952550 [patent_app_country] => US [patent_app_date] => 2001-09-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 5 [patent_no_of_words] => 4464 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 258 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/558/06558089.pdf [firstpage_image] =>[orig_patent_app_number] => 09952550 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/952550
Extender assembly for core drill Sep 13, 2001 Issued
Array ( [id] => 5870294 [patent_doc_number] => 20020046885 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-04-25 [patent_title] => 'Rock drill' [patent_app_type] => new [patent_app_number] => 09/942380 [patent_app_country] => US [patent_app_date] => 2001-08-29 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 1157 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0046/20020046885.pdf [firstpage_image] =>[orig_patent_app_number] => 09942380 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/942380
Rock drill Aug 28, 2001 Abandoned
Array ( [id] => 1297759 [patent_doc_number] => 06619756 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2003-09-16 [patent_title] => 'Chisel holder changing system' [patent_app_type] => B1 [patent_app_number] => 09/914419 [patent_app_country] => US [patent_app_date] => 2001-08-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 8 [patent_no_of_words] => 2450 [patent_no_of_claims] => 18 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 165 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/619/06619756.pdf [firstpage_image] =>[orig_patent_app_number] => 09914419 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/914419
Chisel holder changing system Aug 26, 2001 Issued
Array ( [id] => 1104678 [patent_doc_number] => 06808020 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2004-10-26 [patent_title] => 'Debris-free valve apparatus and method of use' [patent_app_type] => B2 [patent_app_number] => 09/929499 [patent_app_country] => US [patent_app_date] => 2001-08-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 8 [patent_figures_cnt] => 24 [patent_no_of_words] => 8064 [patent_no_of_claims] => 51 [patent_no_of_ind_claims] => 17 [patent_words_short_claim] => 56 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/808/06808020.pdf [firstpage_image] =>[orig_patent_app_number] => 09929499 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/929499
Debris-free valve apparatus and method of use Aug 13, 2001 Issued
Array ( [id] => 1327906 [patent_doc_number] => 06588508 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2003-07-08 [patent_title] => 'Method and apparatus to reduce trapped pressure in a downhole tool' [patent_app_type] => B2 [patent_app_number] => 09/920430 [patent_app_country] => US [patent_app_date] => 2001-08-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 7 [patent_no_of_words] => 3117 [patent_no_of_claims] => 26 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 48 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/588/06588508.pdf [firstpage_image] =>[orig_patent_app_number] => 09920430 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/920430
Method and apparatus to reduce trapped pressure in a downhole tool Jul 31, 2001 Issued
Array ( [id] => 6713362 [patent_doc_number] => 20030024709 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-02-06 [patent_title] => 'Well tubing rotator and hanger system' [patent_app_type] => new [patent_app_number] => 09/917670 [patent_app_country] => US [patent_app_date] => 2001-07-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 4 [patent_figures_cnt] => 4 [patent_no_of_words] => 3766 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 118 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0024/20030024709.pdf [firstpage_image] =>[orig_patent_app_number] => 09917670 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/917670
Well tubing rotator and hanger system Jul 30, 2001 Abandoned
Array ( [id] => 1530952 [patent_doc_number] => 06488089 [patent_country] => US [patent_kind] => B1 [patent_issue_date] => 2002-12-03 [patent_title] => 'Methods of plugging wells' [patent_app_type] => B1 [patent_app_number] => 09/918997 [patent_app_country] => US [patent_app_date] => 2001-07-31 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1926 [patent_no_of_claims] => 20 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 110 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/488/06488089.pdf [firstpage_image] =>[orig_patent_app_number] => 09918997 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/918997
Methods of plugging wells Jul 30, 2001 Issued
Array ( [id] => 1345711 [patent_doc_number] => 06568470 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2003-05-27 [patent_title] => 'Downhole actuation system utilizing electroactive fluids' [patent_app_type] => B2 [patent_app_number] => 09/916617 [patent_app_country] => US [patent_app_date] => 2001-07-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 5 [patent_no_of_words] => 2637 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 50 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/568/06568470.pdf [firstpage_image] =>[orig_patent_app_number] => 09916617 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/916617
Downhole actuation system utilizing electroactive fluids Jul 26, 2001 Issued
Array ( [id] => 6455780 [patent_doc_number] => 20020020560 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2002-02-21 [patent_title] => 'Wireline system for multiple direct push tool usage' [patent_app_type] => new [patent_app_number] => 09/916226 [patent_app_country] => US [patent_app_date] => 2001-07-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 7 [patent_figures_cnt] => 7 [patent_no_of_words] => 5291 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0020/20020020560.pdf [firstpage_image] =>[orig_patent_app_number] => 09916226 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/916226
Wireline system for multiple direct push tool usage Jul 26, 2001 Issued
Array ( [id] => 1321218 [patent_doc_number] => 06595303 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2003-07-22 [patent_title] => 'Rotary steerable drilling tool' [patent_app_type] => B2 [patent_app_number] => 09/907480 [patent_app_country] => US [patent_app_date] => 2001-07-17 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 21 [patent_figures_cnt] => 25 [patent_no_of_words] => 3709 [patent_no_of_claims] => 14 [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/06/595/06595303.pdf [firstpage_image] =>[orig_patent_app_number] => 09907480 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/907480
Rotary steerable drilling tool Jul 16, 2001 Issued
Array ( [id] => 1276730 [patent_doc_number] => 06637521 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2003-10-28 [patent_title] => 'Earth borer' [patent_app_type] => B2 [patent_app_number] => 09/902677 [patent_app_country] => US [patent_app_date] => 2001-07-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 1729 [patent_no_of_claims] => 4 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 166 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/06/637/06637521.pdf [firstpage_image] =>[orig_patent_app_number] => 09902677 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/902677
Earth borer Jul 10, 2001 Issued
Array ( [id] => 6732901 [patent_doc_number] => 20030010536 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2003-01-16 [patent_title] => 'Hole digger' [patent_app_type] => new [patent_app_number] => 09/903737 [patent_app_country] => US [patent_app_date] => 2001-07-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 6 [patent_no_of_words] => 2153 [patent_no_of_claims] => 30 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 47 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] => publications/A1/0010/20030010536.pdf [firstpage_image] =>[orig_patent_app_number] => 09903737 [rel_patent_id] =>[rel_patent_doc_number] =>)
09/903737
Hole digger Jul 10, 2001 Abandoned
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