Search

Len Tran

Supervisory Patent Examiner (ID: 17268, Phone: (571)272-1184 , Office: P/3744 )

Most Active Art Unit
1725
Art Unit(s)
3752, 1725, 3763, 1722, 3744
Total Applications
874
Issued Applications
534
Pending Applications
79
Abandoned Applications
262

Applications

Application numberTitle of the applicationFiling DateStatus
Array ( [id] => 19844253 [patent_doc_number] => 20250089604 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-20 [patent_title] => APPARATUS FOR CONTROLLING APPLICATION OF AGRICULTURAL CHEMICALS [patent_app_type] => utility [patent_app_number] => 18/370175 [patent_app_country] => US [patent_app_date] => 2023-09-19 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4818 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 121 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18370175 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/370175
APPARATUS FOR CONTROLLING APPLICATION OF AGRICULTURAL CHEMICALS Sep 18, 2023 Pending
Array ( [id] => 20413214 [patent_doc_number] => 12496477 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2025-12-16 [patent_title] => Fire suppressing gas generators, systems, and arrangements [patent_app_type] => utility [patent_app_number] => 18/230497 [patent_app_country] => US [patent_app_date] => 2023-08-04 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 11 [patent_figures_cnt] => 15 [patent_no_of_words] => 6061 [patent_no_of_claims] => 36 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 196 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18230497 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/230497
Fire suppressing gas generators, systems, and arrangements Aug 3, 2023 Issued
Array ( [id] => 19753248 [patent_doc_number] => 20250041813 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-06 [patent_title] => PLANTING SYSTEM HAVING AGITATOR [patent_app_type] => utility [patent_app_number] => 18/230121 [patent_app_country] => US [patent_app_date] => 2023-08-03 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7043 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 37 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18230121 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/230121
PLANTING SYSTEM HAVING AGITATOR Aug 2, 2023 Pending
Array ( [id] => 20367745 [patent_doc_number] => 20250357557 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-11-20 [patent_title] => Battery Fire Prediction Method and Battery System Providing the Same [patent_app_type] => utility [patent_app_number] => 18/876539 [patent_app_country] => US [patent_app_date] => 2023-07-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1146 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 112 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18876539 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/876539
Battery Fire Prediction Method and Battery System Providing the Same Jul 10, 2023 Pending
Array ( [id] => 20700552 [patent_doc_number] => 12623244 [patent_country] => US [patent_kind] => B2 [patent_issue_date] => 2026-05-12 [patent_title] => Flameless energizer for treatment agent [patent_app_type] => utility [patent_app_number] => 18/327857 [patent_app_country] => US [patent_app_date] => 2023-06-01 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 17 [patent_figures_cnt] => 30 [patent_no_of_words] => 6653 [patent_no_of_claims] => 19 [patent_no_of_ind_claims] => 3 [patent_words_short_claim] => 131 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => patent [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18327857 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/327857
Flameless energizer for treatment agent May 31, 2023 Issued
Array ( [id] => 19600044 [patent_doc_number] => 20240390924 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-11-28 [patent_title] => DROPLET JET NOZZLE DESIGN [patent_app_type] => utility [patent_app_number] => 18/322484 [patent_app_country] => US [patent_app_date] => 2023-05-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6929 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -17 [patent_words_short_claim] => 124 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18322484 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/322484
DROPLET JET NOZZLE DESIGN May 22, 2023 Pending
Array ( [id] => 18860768 [patent_doc_number] => 20230415203 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-12-28 [patent_title] => WASHING MACHINE FOR WASHING OBJECTS FOR ANIMAL STALLING [patent_app_type] => utility [patent_app_number] => 18/321440 [patent_app_country] => US [patent_app_date] => 2023-05-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4708 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -13 [patent_words_short_claim] => 137 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18321440 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/321440
WASHING MACHINE FOR WASHING OBJECTS FOR ANIMAL STALLING May 21, 2023 Pending
Array ( [id] => 18776360 [patent_doc_number] => 20230371198 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2023-11-16 [patent_title] => COOLING DEVICE [patent_app_type] => utility [patent_app_number] => 18/141057 [patent_app_country] => US [patent_app_date] => 2023-04-28 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4935 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -7 [patent_words_short_claim] => 155 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18141057 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/141057
COOLING DEVICE Apr 27, 2023 Abandoned
Array ( [id] => 20247235 [patent_doc_number] => 20250296104 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-09-25 [patent_title] => TRIGGER SPRAYER [patent_app_type] => utility [patent_app_number] => 18/860887 [patent_app_country] => US [patent_app_date] => 2023-04-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 0 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -9 [patent_words_short_claim] => 204 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18860887 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/860887
TRIGGER SPRAYER Apr 24, 2023 Pending
Array ( [id] => 19249889 [patent_doc_number] => 20240200877 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-20 [patent_title] => HEAT EXCHANGER PLATE, HEAT EXCHANGER PLATE LAMINATE, AND MICROCHANNEL HEAT EXCHANGER [patent_app_type] => utility [patent_app_number] => 18/554912 [patent_app_country] => US [patent_app_date] => 2022-12-21 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 12659 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 146 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18554912 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/554912
HEAT EXCHANGER PLATE, HEAT EXCHANGER PLATE LAMINATE, AND MICROCHANNEL HEAT EXCHANGER Dec 20, 2022 Abandoned
Array ( [id] => 19799081 [patent_doc_number] => 20250065006 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-02-27 [patent_title] => DEVICE FOR EVAPORATING VOLATILE SUBSTANCES [patent_app_type] => utility [patent_app_number] => 18/719288 [patent_app_country] => US [patent_app_date] => 2022-12-13 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 1769 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -10 [patent_words_short_claim] => 86 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18719288 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/719288
DEVICE FOR EVAPORATING VOLATILE SUBSTANCES Dec 12, 2022 Pending
Array ( [id] => 19599838 [patent_doc_number] => 20240390718 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-11-28 [patent_title] => DEVICES, SYSTEMS, AND METHODS FOR APPLICATION OF FIRE RETARDANT [patent_app_type] => utility [patent_app_number] => 18/696231 [patent_app_country] => US [patent_app_date] => 2022-09-27 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 11312 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [patent_words_short_claim] => 88 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18696231 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/696231
DEVICES, SYSTEMS, AND METHODS FOR APPLICATION OF FIRE RETARDANT Sep 26, 2022 Pending
Array ( [id] => 19480603 [patent_doc_number] => 20240328645 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-03 [patent_title] => CEILING ELEMENT WITH AIR OUTLET BOX [patent_app_type] => utility [patent_app_number] => 18/579700 [patent_app_country] => US [patent_app_date] => 2022-09-06 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 4279 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -15 [patent_words_short_claim] => 154 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18579700 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/579700
CEILING ELEMENT WITH AIR OUTLET BOX Sep 5, 2022 Pending
Array ( [id] => 19529287 [patent_doc_number] => 20240353189 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-10-24 [patent_title] => Air cooled heat exchanger [patent_app_type] => utility [patent_app_number] => 18/685507 [patent_app_country] => US [patent_app_date] => 2022-08-23 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5127 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -12 [patent_words_short_claim] => 140 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18685507 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/685507
Air cooled heat exchanger Aug 22, 2022 Pending
Array ( [id] => 19615632 [patent_doc_number] => 20240401312 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-12-05 [patent_title] => DRINKING FOUNTAIN AND FOUNTAIN ARM THEREOF [patent_app_type] => utility [patent_app_number] => 18/686373 [patent_app_country] => US [patent_app_date] => 2022-08-22 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 2246 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18686373 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/686373
DRINKING FOUNTAIN AND FOUNTAIN ARM THEREOF Aug 21, 2022 Abandoned
Array ( [id] => 19863462 [patent_doc_number] => 20250102248 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2025-03-27 [patent_title] => SELF-DEFROSTING HEAT EXCHANGER AND METHOD OF USING SAME [patent_app_type] => utility [patent_app_number] => 18/290978 [patent_app_country] => US [patent_app_date] => 2022-06-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5046 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -14 [patent_words_short_claim] => 156 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18290978 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/290978
SELF-DEFROSTING HEAT EXCHANGER AND METHOD OF USING SAME Jun 7, 2022 Pending
Array ( [id] => 19431786 [patent_doc_number] => 20240300284 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-09-12 [patent_title] => SYSTEM AND METHOD FOR DYNAMIC FLUID HEATING IN ELECTRIC VEHICLES [patent_app_type] => utility [patent_app_number] => 18/575131 [patent_app_country] => US [patent_app_date] => 2022-04-08 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 9744 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -20 [patent_words_short_claim] => 2 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18575131 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/575131
SYSTEM AND METHOD FOR DYNAMIC FLUID HEATING IN ELECTRIC VEHICLES Apr 7, 2022 Pending
Array ( [id] => 19215437 [patent_doc_number] => 20240180141 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-06-06 [patent_title] => Method for Spreading Spraying Liquid onto Arable Agricultural Land [patent_app_type] => utility [patent_app_number] => 18/285942 [patent_app_country] => US [patent_app_date] => 2022-03-25 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 6114 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -6 [patent_words_short_claim] => 155 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18285942 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/285942
Method for Spreading Spraying Liquid onto Arable Agricultural Land Mar 24, 2022 Pending
Array ( [id] => 19570848 [patent_doc_number] => 20240375140 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-11-14 [patent_title] => SPRAY GUN CAPABLE OF PREVENTING SPATTERING [patent_app_type] => utility [patent_app_number] => 18/689134 [patent_app_country] => US [patent_app_date] => 2022-02-11 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 7424 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -19 [patent_words_short_claim] => 118 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18689134 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/689134
SPRAY GUN CAPABLE OF PREVENTING SPATTERING Feb 10, 2022 Pending
Array ( [id] => 19048399 [patent_doc_number] => 20240090368 [patent_country] => US [patent_kind] => A1 [patent_issue_date] => 2024-03-21 [patent_title] => Method for Spreading Broadcasting Material Using an Agricultural Spreader [patent_app_type] => utility [patent_app_number] => 18/277355 [patent_app_country] => US [patent_app_date] => 2022-02-09 [patent_effective_date] => 0000-00-00 [patent_drawing_sheets_cnt] => 0 [patent_figures_cnt] => 0 [patent_no_of_words] => 5856 [patent_no_of_claims] => 0 [patent_no_of_ind_claims] => -11 [patent_words_short_claim] => 136 [patent_maintenance] => 1 [patent_no_of_assignments] => 0 [patent_current_assignee] =>[type] => publication [pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18277355 [rel_patent_id] =>[rel_patent_doc_number] =>)
18/277355
Method for Spreading Broadcasting Material Using an Agricultural Spreader Feb 8, 2022 Pending
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