
Prema Maria Mertz
Examiner (ID: 18701, Phone: (571)272-0876 , Office: P/1646 )
| Most Active Art Unit | 1646 |
| Art Unit(s) | 1674, 1646, 1621, 1812 |
| Total Applications | 2641 |
| Issued Applications | 1565 |
| Pending Applications | 461 |
| Abandoned Applications | 662 |
Applications
| Application number | Title of the application | Filing Date | Status |
|---|---|---|---|
Array
(
[id] => 20309629
[patent_doc_number] => 20250327258
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-10-23
[patent_title] => WATER SURFACE AUTOMATIC CLEANING APPARATUS
[patent_app_type] => utility
[patent_app_number] => 19/257018
[patent_app_country] => US
[patent_app_date] => 2025-07-01
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 3669
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -23
[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] => 19257018
[rel_patent_id] =>[rel_patent_doc_number] =>) 19/257018 | WATER SURFACE AUTOMATIC CLEANING APPARATUS | Jun 30, 2025 | Pending |
Array
(
[id] => 20280071
[patent_doc_number] => 20250305313
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-10-02
[patent_title] => SWIMMING POOL ROBOT AND METHOD FOR CONTROLLING SWIMMING POOL ROBOT
[patent_app_type] => utility
[patent_app_number] => 19/240758
[patent_app_country] => US
[patent_app_date] => 2025-06-17
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 44159
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -17
[patent_words_short_claim] => 221
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => publication
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19240758
[rel_patent_id] =>[rel_patent_doc_number] =>) 19/240758 | Swimming pool robot and method for controlling swimming pool robot | Jun 16, 2025 | Issued |
Array
(
[id] => 20144409
[patent_doc_number] => 12378741
[patent_country] => US
[patent_kind] => B2
[patent_issue_date] => 2025-08-05
[patent_title] => Water surface automatic cleaning apparatus
[patent_app_type] => utility
[patent_app_number] => 19/070645
[patent_app_country] => US
[patent_app_date] => 2025-03-05
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 8
[patent_figures_cnt] => 20
[patent_no_of_words] => 3669
[patent_no_of_claims] => 18
[patent_no_of_ind_claims] => 3
[patent_words_short_claim] => 110
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 19070645
[rel_patent_id] =>[rel_patent_doc_number] =>) 19/070645 | Water surface automatic cleaning apparatus | Mar 4, 2025 | Issued |
Array
(
[id] => 20093887
[patent_doc_number] => 20250223823
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-07-10
[patent_title] => AUTOMATIC POOL CLEANING APPARATUS
[patent_app_type] => utility
[patent_app_number] => 18/985265
[patent_app_country] => US
[patent_app_date] => 2024-12-18
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 3619
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -16
[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] => 18985265
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/985265 | Automatic pool cleaning apparatus | Dec 17, 2024 | Issued |
Array
(
[id] => 20093887
[patent_doc_number] => 20250223823
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-07-10
[patent_title] => AUTOMATIC POOL CLEANING APPARATUS
[patent_app_type] => utility
[patent_app_number] => 18/985265
[patent_app_country] => US
[patent_app_date] => 2024-12-18
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 3619
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -16
[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] => 18985265
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/985265 | Automatic pool cleaning apparatus | Dec 17, 2024 | Issued |
Array
(
[id] => 20093887
[patent_doc_number] => 20250223823
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-07-10
[patent_title] => AUTOMATIC POOL CLEANING APPARATUS
[patent_app_type] => utility
[patent_app_number] => 18/985265
[patent_app_country] => US
[patent_app_date] => 2024-12-18
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 3619
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -16
[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] => 18985265
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/985265 | Automatic pool cleaning apparatus | Dec 17, 2024 | Issued |
Array
(
[id] => 20093887
[patent_doc_number] => 20250223823
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-07-10
[patent_title] => AUTOMATIC POOL CLEANING APPARATUS
[patent_app_type] => utility
[patent_app_number] => 18/985265
[patent_app_country] => US
[patent_app_date] => 2024-12-18
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 3619
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -16
[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] => 18985265
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/985265 | Automatic pool cleaning apparatus | Dec 17, 2024 | Issued |
Array
(
[id] => 19889490
[patent_doc_number] => 20250114802
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-04-10
[patent_title] => VORTICAL CROSS-FLOW FILTRATION SYSTEM
[patent_app_type] => utility
[patent_app_number] => 18/957121
[patent_app_country] => US
[patent_app_date] => 2024-11-22
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 33648
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -19
[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] => 18957121
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/957121 | Vortical cross-flow filtration system | Nov 21, 2024 | Issued |
Array
(
[id] => 19916530
[patent_doc_number] => 12291889
[patent_country] => US
[patent_kind] => B1
[patent_issue_date] => 2025-05-06
[patent_title] => Systems, methods, apparatuses, and devices for cleaning an open body
[patent_app_type] => utility
[patent_app_number] => 18/900597
[patent_app_country] => US
[patent_app_date] => 2024-09-27
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 13
[patent_figures_cnt] => 14
[patent_no_of_words] => 1331
[patent_no_of_claims] => 20
[patent_no_of_ind_claims] => 1
[patent_words_short_claim] => 244
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18900597
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/900597 | Systems, methods, apparatuses, and devices for cleaning an open body | Sep 26, 2024 | Issued |
Array
(
[id] => 19998263
[patent_doc_number] => 20250136485
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2025-05-01
[patent_title] => HIGH-LOAD ORGANIC WASTEWATER DARK FERMENTATION BIOHYDROGEN PRODUCTION DEVICE AND HYDROGEN PRODUCTION METHOD
[patent_app_type] => utility
[patent_app_number] => 18/894511
[patent_app_country] => US
[patent_app_date] => 2024-09-24
[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] => 378
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => publication
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18894511
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/894511 | High-load organic wastewater dark fermentation biohydrogen production device and hydrogen production method | Sep 23, 2024 | Issued |
Array
(
[id] => 19855780
[patent_doc_number] => 12258604
[patent_country] => US
[patent_kind] => B2
[patent_issue_date] => 2025-03-25
[patent_title] => Method for promoting anaerobic digestion using carbonyl iron
[patent_app_type] => utility
[patent_app_number] => 18/889673
[patent_app_country] => US
[patent_app_date] => 2024-09-19
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 4
[patent_figures_cnt] => 4
[patent_no_of_words] => 3350
[patent_no_of_claims] => 3
[patent_no_of_ind_claims] => 1
[patent_words_short_claim] => 40
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18889673
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/889673 | Method for promoting anaerobic digestion using carbonyl iron | Sep 18, 2024 | Issued |
Array
(
[id] => 19579778
[patent_doc_number] => 12145874
[patent_country] => US
[patent_kind] => B1
[patent_issue_date] => 2024-11-19
[patent_title] => Water aeration and treatment method
[patent_app_type] => utility
[patent_app_number] => 18/782080
[patent_app_country] => US
[patent_app_date] => 2024-07-24
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 6
[patent_figures_cnt] => 7
[patent_no_of_words] => 14937
[patent_no_of_claims] => 3
[patent_no_of_ind_claims] => 1
[patent_words_short_claim] => 308
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18782080
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/782080 | Water aeration and treatment method | Jul 23, 2024 | Issued |
Array
(
[id] => 19462811
[patent_doc_number] => 20240316480
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2024-09-26
[patent_title] => FILTRATION RECOVERY DEVICE AND FILTRATION RECOVERY METHOD
[patent_app_type] => utility
[patent_app_number] => 18/676015
[patent_app_country] => US
[patent_app_date] => 2024-05-28
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 19282
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -2
[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] => 18676015
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/676015 | Filtration recovery device and filtration recovery method | May 27, 2024 | Issued |
Array
(
[id] => 19612205
[patent_doc_number] => 20240397885
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2024-12-05
[patent_title] => HYDROPONIC WATER TREATMENT SYSTEM
[patent_app_type] => utility
[patent_app_number] => 18/673935
[patent_app_country] => US
[patent_app_date] => 2024-05-24
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 7896
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -15
[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] => 18673935
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/673935 | Hydroponic water treatment system | May 23, 2024 | Issued |
Array
(
[id] => 19504880
[patent_doc_number] => 12116291
[patent_country] => US
[patent_kind] => B1
[patent_issue_date] => 2024-10-15
[patent_title] => Water restoration system
[patent_app_type] => utility
[patent_app_number] => 18/668672
[patent_app_country] => US
[patent_app_date] => 2024-05-20
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 9
[patent_figures_cnt] => 9
[patent_no_of_words] => 7951
[patent_no_of_claims] => 20
[patent_no_of_ind_claims] => 3
[patent_words_short_claim] => 199
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18668672
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/668672 | Water restoration system | May 19, 2024 | Issued |
Array
(
[id] => 19579777
[patent_doc_number] => 12145873
[patent_country] => US
[patent_kind] => B1
[patent_issue_date] => 2024-11-19
[patent_title] => Preparation method for modified cathode of MEC-AD system and application of system with high efficiency and low energy consumption
[patent_app_type] => utility
[patent_app_number] => 18/669020
[patent_app_country] => US
[patent_app_date] => 2024-05-20
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 2
[patent_figures_cnt] => 3
[patent_no_of_words] => 2971
[patent_no_of_claims] => 10
[patent_no_of_ind_claims] => 1
[patent_words_short_claim] => 143
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18669020
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/669020 | Preparation method for modified cathode of MEC-AD system and application of system with high efficiency and low energy consumption | May 19, 2024 | Issued |
Array
(
[id] => 19441101
[patent_doc_number] => 12091341
[patent_country] => US
[patent_kind] => B2
[patent_issue_date] => 2024-09-17
[patent_title] => Water retention and aeration treatment method for contaminated water
[patent_app_type] => utility
[patent_app_number] => 18/601115
[patent_app_country] => US
[patent_app_date] => 2024-03-11
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 6
[patent_figures_cnt] => 7
[patent_no_of_words] => 14918
[patent_no_of_claims] => 3
[patent_no_of_ind_claims] => 1
[patent_words_short_claim] => 297
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => patent
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18601115
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/601115 | Water retention and aeration treatment method for contaminated water | Mar 10, 2024 | Issued |
Array
(
[id] => 19332417
[patent_doc_number] => 20240246847
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2024-07-25
[patent_title] => SYSTEM AND METHOD FOR IMPROVED ANAEROBIC DIGESTION
[patent_app_type] => utility
[patent_app_number] => 18/440845
[patent_app_country] => US
[patent_app_date] => 2024-02-13
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 9780
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -18
[patent_words_short_claim] => 50
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => publication
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18440845
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/440845 | SYSTEM AND METHOD FOR IMPROVED ANAEROBIC DIGESTION | Feb 12, 2024 | Pending |
Array
(
[id] => 19217641
[patent_doc_number] => 20240182345
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2024-06-06
[patent_title] => METHODS AND SYSTEMS FOR DIGESTING BIOSOLIDS AND RECOVERING PHOSPHORUS
[patent_app_type] => utility
[patent_app_number] => 18/395681
[patent_app_country] => US
[patent_app_date] => 2023-12-25
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 19511
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -8
[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] => 18395681
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/395681 | METHODS AND SYSTEMS FOR DIGESTING BIOSOLIDS AND RECOVERING PHOSPHORUS | Dec 24, 2023 | Pending |
Array
(
[id] => 19234012
[patent_doc_number] => 20240191204
[patent_country] => US
[patent_kind] => A1
[patent_issue_date] => 2024-06-13
[patent_title] => PLATFORMS AND SYSTEMS FOR AUTOMATED CELL CULTURE
[patent_app_type] => utility
[patent_app_number] => 18/391053
[patent_app_country] => US
[patent_app_date] => 2023-12-20
[patent_effective_date] => 0000-00-00
[patent_drawing_sheets_cnt] => 0
[patent_figures_cnt] => 0
[patent_no_of_words] => 97650
[patent_no_of_claims] => 0
[patent_no_of_ind_claims] => -15
[patent_words_short_claim] => 119
[patent_maintenance] => 1
[patent_no_of_assignments] => 0
[patent_current_assignee] =>[type] => publication
[pdf_file] =>[firstpage_image] =>[orig_patent_app_number] => 18391053
[rel_patent_id] =>[rel_patent_doc_number] =>) 18/391053 | PLATFORMS AND SYSTEMS FOR AUTOMATED CELL CULTURE | Dec 19, 2023 | Pending |