Search

Tu Ba Hoang

Supervisory Patent Examiner (ID: 2828, Phone: (571)272-4780 , Office: P/3742 )

Most Active Art Unit
3761
Art Unit(s)
2832, 3742, 3761, 2106
Total Applications
2049
Issued Applications
1536
Pending Applications
181
Abandoned Applications
331

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 3639788 [patent_doc_number] => 05687187 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-11-11 [patent_title] => 'Process and device for regulating the position of the tip of an electric furnace electrode' [patent_app_type] => 1 [patent_app_number] => 8/652585 [patent_app_country] => US [patent_app_date] => 1996-07-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 2 [patent_no_of_words] => 2373 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 126 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/687/05687187.pdf [firstpage_image] =>[orig_patent_app_number] => 652585 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/652585
Process and device for regulating the position of the tip of an electric furnace electrode Jul 17, 1996 Issued
Array ( [id] => 3987577 [patent_doc_number] => 05905752 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-05-18 [patent_title] => 'ARC furnace fume collection system and method' [patent_app_type] => 1 [patent_app_number] => 8/680145 [patent_app_country] => US [patent_app_date] => 1996-07-15 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 13 [patent_figures_cnt] => 30 [patent_no_of_words] => 16595 [patent_no_of_claims] => 12 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 218 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/905/05905752.pdf [firstpage_image] =>[orig_patent_app_number] => 680145 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/680145
ARC furnace fume collection system and method Jul 14, 1996 Issued
Array ( [id] => 3943259 [patent_doc_number] => 05973302 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-10-26 [patent_title] => 'Environment control apparatus for use with a portable computer' [patent_app_type] => 1 [patent_app_number] => 8/679720 [patent_app_country] => US [patent_app_date] => 1996-07-12 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 19 [patent_no_of_words] => 2100 [patent_no_of_claims] => 21 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 77 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/973/05973302.pdf [firstpage_image] =>[orig_patent_app_number] => 679720 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/679720
Environment control apparatus for use with a portable computer Jul 11, 1996 Issued
Array ( [id] => 3891361 [patent_doc_number] => 05729569 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-03-17 [patent_title] => 'Submerged arc furnace with vertically movable frame' [patent_app_type] => 1 [patent_app_number] => 8/652587 [patent_app_country] => US [patent_app_date] => 1996-07-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 1 [patent_figures_cnt] => 1 [patent_no_of_words] => 1531 [patent_no_of_claims] => 11 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 22 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/729/05729569.pdf [firstpage_image] =>[orig_patent_app_number] => 652587 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/652587
Submerged arc furnace with vertically movable frame Jul 10, 1996 Issued
Array ( [id] => 3981923 [patent_doc_number] => 05887018 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-03-23 [patent_title] => 'Longitudinal electromagnetic levitator' [patent_app_type] => 1 [patent_app_number] => 8/677587 [patent_app_country] => US [patent_app_date] => 1996-07-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 9 [patent_figures_cnt] => 11 [patent_no_of_words] => 4682 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 67 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/887/05887018.pdf [firstpage_image] =>[orig_patent_app_number] => 677587 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/677587
Longitudinal electromagnetic levitator Jul 8, 1996 Issued
Array ( [id] => 3938617 [patent_doc_number] => 05946341 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-08-31 [patent_title] => 'Method pertaining to the operation of electric furnaces, and a furnace' [patent_app_type] => 1 [patent_app_number] => 8/675929 [patent_app_country] => US [patent_app_date] => 1996-07-05 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 4325 [patent_no_of_claims] => 23 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 154 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/946/05946341.pdf [firstpage_image] =>[orig_patent_app_number] => 675929 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/675929
Method pertaining to the operation of electric furnaces, and a furnace Jul 4, 1996 Issued
Array ( [id] => 3811618 [patent_doc_number] => 05854469 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-12-29 [patent_title] => 'Heating unit for therapeutic instrument' [patent_app_type] => 1 [patent_app_number] => 8/673345 [patent_app_country] => US [patent_app_date] => 1996-06-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 1806 [patent_no_of_claims] => 7 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 56 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/854/05854469.pdf [firstpage_image] =>[orig_patent_app_number] => 673345 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/673345
Heating unit for therapeutic instrument Jun 27, 1996 Issued
Array ( [id] => 4062467 [patent_doc_number] => 05870424 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-02-09 [patent_title] => 'Graphite electrode having joints' [patent_app_type] => 1 [patent_app_number] => 8/667797 [patent_app_country] => US [patent_app_date] => 1996-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 6 [patent_no_of_words] => 2160 [patent_no_of_claims] => 13 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 134 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/870/05870424.pdf [firstpage_image] =>[orig_patent_app_number] => 667797 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/667797
Graphite electrode having joints Jun 19, 1996 Issued
Array ( [id] => 4035639 [patent_doc_number] => 05926498 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-07-20 [patent_title] => 'Melting furnace for the thermal treatment of special waste materials containing heavy metal and/or dioxin' [patent_app_type] => 1 [patent_app_number] => 8/667816 [patent_app_country] => US [patent_app_date] => 1996-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 1965 [patent_no_of_claims] => 24 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 232 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/926/05926498.pdf [firstpage_image] =>[orig_patent_app_number] => 667816 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/667816
Melting furnace for the thermal treatment of special waste materials containing heavy metal and/or dioxin Jun 19, 1996 Issued
Array ( [id] => 4028488 [patent_doc_number] => 05881090 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-03-09 [patent_title] => 'Quartz used in semiconductor manufacturing device, apparatus for manufacturing the quartz, and method for manufacturing the same' [patent_app_type] => 1 [patent_app_number] => 8/668257 [patent_app_country] => US [patent_app_date] => 1996-06-20 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 6 [patent_no_of_words] => 3445 [patent_no_of_claims] => 17 [patent_no_of_ind_claims] => 9 [patent_words_short_claim] => 27 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/881/05881090.pdf [firstpage_image] =>[orig_patent_app_number] => 668257 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/668257
Quartz used in semiconductor manufacturing device, apparatus for manufacturing the quartz, and method for manufacturing the same Jun 19, 1996 Issued
Array ( [id] => 3826593 [patent_doc_number] => 05812586 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-09-22 [patent_title] => 'Method and apparatus for removing a molten slag with a vacuum from a chamber' [patent_app_type] => 1 [patent_app_number] => 8/666036 [patent_app_country] => US [patent_app_date] => 1996-06-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 6 [patent_no_of_words] => 3804 [patent_no_of_claims] => 25 [patent_no_of_ind_claims] => 5 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/812/05812586.pdf [firstpage_image] =>[orig_patent_app_number] => 666036 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/666036
Method and apparatus for removing a molten slag with a vacuum from a chamber Jun 18, 1996 Issued
Array ( [id] => 3833361 [patent_doc_number] => 05760376 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-06-02 [patent_title] => 'Air heater with self-supporting heater element' [patent_app_type] => 1 [patent_app_number] => 8/665915 [patent_app_country] => US [patent_app_date] => 1996-06-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 1762 [patent_no_of_claims] => 8 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 54 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/760/05760376.pdf [firstpage_image] =>[orig_patent_app_number] => 665915 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/665915
Air heater with self-supporting heater element Jun 18, 1996 Issued
Array ( [id] => 3765544 [patent_doc_number] => 05844212 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-12-01 [patent_title] => 'Dual surface heaters' [patent_app_type] => 1 [patent_app_number] => 8/664917 [patent_app_country] => US [patent_app_date] => 1996-06-18 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 24 [patent_no_of_words] => 4576 [patent_no_of_claims] => 6 [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/05/844/05844212.pdf [firstpage_image] =>[orig_patent_app_number] => 664917 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/664917
Dual surface heaters Jun 17, 1996 Issued
Array ( [id] => 3740387 [patent_doc_number] => 05703901 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-12-30 [patent_title] => 'Calcination furnace' [patent_app_type] => 1 [patent_app_number] => 8/664340 [patent_app_country] => US [patent_app_date] => 1996-06-14 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 16 [patent_no_of_words] => 8385 [patent_no_of_claims] => 30 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 76 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/703/05703901.pdf [firstpage_image] =>[orig_patent_app_number] => 664340 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/664340
Calcination furnace Jun 13, 1996 Issued
Array ( [id] => 3811669 [patent_doc_number] => 05854472 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-12-29 [patent_title] => 'Low-voltage and low flux density heating system' [patent_app_type] => 1 [patent_app_number] => 8/659180 [patent_app_country] => US [patent_app_date] => 1996-06-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 14 [patent_figures_cnt] => 24 [patent_no_of_words] => 10986 [patent_no_of_claims] => 36 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 279 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/854/05854472.pdf [firstpage_image] =>[orig_patent_app_number] => 659180 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/659180
Low-voltage and low flux density heating system Jun 5, 1996 Issued
Array ( [id] => 3742771 [patent_doc_number] => 05694413 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1997-12-02 [patent_title] => 'Procedure and apparatus for continuous supply of heat in electrically conductive bulk goods' [patent_app_type] => 1 [patent_app_number] => 8/676102 [patent_app_country] => US [patent_app_date] => 1996-06-02 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 6 [patent_figures_cnt] => 9 [patent_no_of_words] => 5908 [patent_no_of_claims] => 30 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 113 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/694/05694413.pdf [firstpage_image] =>[orig_patent_app_number] => 676102 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/676102
Procedure and apparatus for continuous supply of heat in electrically conductive bulk goods Jun 1, 1996 Issued
Array ( [id] => 4007519 [patent_doc_number] => 05892888 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-04-06 [patent_title] => 'Means for electrically heating a circulating fluid in a basin or pool' [patent_app_type] => 1 [patent_app_number] => 8/654313 [patent_app_country] => US [patent_app_date] => 1996-05-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 5 [patent_figures_cnt] => 5 [patent_no_of_words] => 3002 [patent_no_of_claims] => 5 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 35 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/892/05892888.pdf [firstpage_image] =>[orig_patent_app_number] => 654313 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/654313
Means for electrically heating a circulating fluid in a basin or pool May 27, 1996 Issued
Array ( [id] => 3906730 [patent_doc_number] => 05835523 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-11-10 [patent_title] => 'Bottom electrode for a metallurgical vessel' [patent_app_type] => 1 [patent_app_number] => 8/628604 [patent_app_country] => US [patent_app_date] => 1996-05-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 5 [patent_no_of_words] => 1850 [patent_no_of_claims] => 10 [patent_no_of_ind_claims] => 1 [patent_words_short_claim] => 176 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/835/05835523.pdf [firstpage_image] =>[orig_patent_app_number] => 628604 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/628604
Bottom electrode for a metallurgical vessel May 27, 1996 Issued
Array ( [id] => 4079036 [patent_doc_number] => 05867523 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1999-02-02 [patent_title] => 'Electric furnace with conductive hearth' [patent_app_type] => 1 [patent_app_number] => 8/655168 [patent_app_country] => US [patent_app_date] => 1996-05-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 2 [patent_figures_cnt] => 3 [patent_no_of_words] => 2091 [patent_no_of_claims] => 15 [patent_no_of_ind_claims] => 2 [patent_words_short_claim] => 64 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/867/05867523.pdf [firstpage_image] =>[orig_patent_app_number] => 655168 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/655168
Electric furnace with conductive hearth May 27, 1996 Issued
Array ( [id] => 3765518 [patent_doc_number] => 05844210 [patent_country] => US [patent_kind] => NA [patent_issue_date] => 1998-12-01 [patent_title] => 'Ice fishing hole heater' [patent_app_type] => 1 [patent_app_number] => 8/652800 [patent_app_country] => US [patent_app_date] => 1996-05-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 3 [patent_figures_cnt] => 3 [patent_no_of_words] => 2279 [patent_no_of_claims] => 9 [patent_no_of_ind_claims] => 4 [patent_words_short_claim] => 103 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] => patents/05/844/05844210.pdf [firstpage_image] =>[orig_patent_app_number] => 652800 [rel_patent_id] =>[rel_patent_doc_number] =>)
08/652800
Ice fishing hole heater May 22, 1996 Issued
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