Description
Class C02F : TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Subclass 1/28: Treatment of water, waste water, or sewage (C02F 3/00-C02F 9/00 take precedence) by sorption (using ion-exchange C02F 1/42; sorbent compositions B01J)
C02F 1/28
Sub-Class
Stats
- 2,390 US PATENTS IN FORCE
- 585 US APPLICATIONS PENDING
- 650 Total Patent Owners
- 7,444 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12263463 | Biomass pyrolysis systems and methods for metal removal from biofuel | Mar 03, 21 | Apr 01, 25 | ExxonMobil Technology and Engineering Company |
| 12264078 | Lithium recovery thermal management | Aug 01, 22 | Apr 01, 25 | Dowell -- A Division of Schlumberger Technology Corporation |
| 12264086 | Filter for water-purification device and water-purification device including the same | Sep 01, 23 | Apr 01, 25 | LG Electronics Inc. |
| 12257565 | Activated carbon for adsorbing per- and polyfluoroalkyl compounds in water sample | Aug 11, 20 | Mar 25, 25 | FUTAMURA KAGAKU KABUSHIKI KAISHA; Japan as represented by Director General of National Institute of Advanced Industrial Science and Technology Ministry of Economy Trade and Industry; |
| 12258276 | Carbonaceous material, method for producing same, filter for water purification and water purifier | Apr 22, 20 | Mar 25, 25 | Kuraray Co. Ltd. |
| 12258283 | Iron-based desalination | May 01, 23 | Mar 25, 25 | Badwater Alchemy Inc. |
| 12258284 | Activated carbon | Jun 18, 19 | Mar 25, 25 | AD'ALL CO., LTD.; Unitika LTD; OSAKA GAS CHEMICALS CO., LTD.; |
| 12251667 | Nanofunctionalised polymeric support with photocatalytic nanoparticles based on titanium dioxide and its use as photocatalysts | Oct 29, 20 | Mar 18, 25 | COLOROBBIA CONSULTING S.R.L. |
| 12251678 | Liquid phase separation of second-generation sugars by adsorption on FAU zeolite having a Si/Al atomic ratio of less than 1.5 | Jun 11, 20 | Mar 18, 25 | IFP Energies Nouvelles |
| 12252427 | Pressurized water filter and water filtration apparatus | Jun 23, 22 | Mar 18, 25 | Not available |
| 12246968 | Oleophilic hydrophobic magnetic porous materials | Dec 20, 19 | Mar 11, 25 | Northwestern University |
| 12246974 | Systems and methods of removing per- and polyfluoroalkyl substances (PFAS) with calcium oxide | Jan 19, 22 | Mar 11, 25 | NOBLIS, INC. |
| 12240767 | Adsorptive removal of perfluorinated or partially fluorinated surfactants | Jun 29, 20 | Mar 04, 25 | Katholieke Universiteit Leuven; VITO NV; |
| 12240768 | Sulfer-doped silver tungstate (AG2WO4) nanoparticles for water decontamination | Nov 01, 24 | Mar 04, 25 | IMAM MOHAMMAD IBN SAUD ISLAMIC UNIVERSITY |
| 12239954 | Sonication method for making adsorbent composition | Aug 11, 21 | Mar 04, 25 | King Fahd University of Petroleum and Minerals; KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY; |
| 12239960 | Zeolite composites for water purification | Jan 20, 21 | Mar 04, 25 | THE UWM RESEARCH FOUNDATION INC. |
| 12234162 | Water purification cartridge | Sep 30, 19 | Feb 25, 25 | Unitika Ltd. |
| 12234170 | Method of purifying natural water and wastewater | Jul 31, 19 | Feb 25, 25 | Not available |
| 12234171 | Filter module for water dispensing device | Jan 06, 22 | Feb 25, 25 | LG Electronics Inc. |
| 12234172 | Mobile processing system for hazardous and radioactive isotope removal | May 05, 22 | Feb 25, 25 | Not available |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0115,492 | STORMWATER AND INDUSTRIAL EFFLUENT BIOCHAR BASED FILTER MEDIA | Oct 07, 24 | Apr 10, 25 | Not available |
| 2025/0115,494 | REMOVAL OF VIRUSES FROM WATER BY FILTRATION | Aug 04, 22 | Apr 10, 25 | instrAction GmbH |
| 2025/0115,502 | Method and Composition for Botanical Soil Additive to Mitigate PFAS Uptake in Plants | Oct 10, 24 | Apr 10, 25 | Not available |
| 2025/0115,695 | CONTAMINANT REMEDIATION WITH FUNCTIONALIZED (METH)ACRYLIC POLYMER OR COPOLYMER MACROPARTICULATES AND SYSTEMS RELATED THERETO | Sep 13, 24 | Apr 10, 25 | Countertrace, LLC |
| 2025/0108,355 | ADSORPTION FILTER | Mar 20, 23 | Apr 03, 25 | Kuraray Co., Ltd. |
| 2025/0109,046 | WATER FILTER SYSTEM FOR USE WITH A SHOWER | Oct 02, 23 | Apr 03, 25 | Not available |
| 2025/0109,047 | CAPTURING FENTANYL USING BIOSYNTHETIC MELANIN | Sep 30, 24 | Apr 03, 25 | The Government of the United States of America as represented by the Secretary of the Navy |
| 2025/0091,107 | Compositions and Methods for Cleaning Contaminated Solids and Liquids | Dec 02, 24 | Mar 20, 25 | Not available |
| 2025/0092,327 | SYSTEMS AND METHODS FOR MANAGING FILTRATION MEDIA BEDS IN GAS AND LIQUID FILTRATION APPARATUS | Nov 06, 23 | Mar 20, 25 | Not available |
| 2025/0091,907 | APPARATUS AND PROCESS FOR REMOVING PFAS AND PFAS COMPOUNDS FROM WATER | Aug 26, 24 | Mar 20, 25 | Not available |
| 2025/0083,122 | Preparation Method for Functional Material for Extracting Lithium from Aluminum Salt | Nov 23, 22 | Mar 13, 25 | Not available |
| 2025/0083,123 | SELENIUM NANOMATERIALS AND METHODS OF MAKING AND USING SAME | Nov 22, 24 | Mar 13, 25 | Regents of the University of Minnesota |
| 2025/0083,976 | COMPOSITE METAL OXIDE | May 12, 23 | Mar 13, 25 | SETOLAS HOLDINGS, INC. |
| 2025/0073,671 | CONTINUOUS PREPARATION METHOD OF COMPOSITE PARTICLES FOR CAPTURING CARBON DIOXIDE | Sep 05, 24 | Mar 06, 25 | POSTECH Research and Business Development Foundation; BlueCaBORN Co, Ltd; |
| 2025/0073,672 | POLYETHYLENEIMINE MODIFIED GRAPHENE OXIDES AND METHODS FOR MAKING AND USING SAME | Sep 05, 24 | Mar 06, 25 | University of Louisiana at Lafayette |
| 2025/0073,673 | NANONETS FOR REMOVAL OF CONTAMINANTS FROM AQUEOUS SOLUTIONS, KITS THEREFOR AND METHODS OF THEIR USE | Aug 20, 24 | Mar 06, 25 | Not available |
| 2025/0074,791 | TREATMENT METHOD FOR INDIGO-CONTAINING WASTEWATER BY COMBINED ADSORPTION AND REGENERATION PROCESS | Aug 28, 23 | Mar 06, 25 | The Hong Kong Research Institute of Textiles and Apparel Limited |
| 2025/0074,793 | WATER PURIFIER | Aug 31, 23 | Mar 06, 25 | Not available |
| 2025/0074,792 | WATER SOFTENER | Aug 28, 24 | Mar 06, 25 | Not available |
| 2025/0065,299 | LAYERED MULTI-METAL-OXIDE-BASED MAGNETIC BIOCHAR AND PREPARATION METHOD AND USE THEREOF | Dec 07, 23 | Feb 27, 25 | Not available |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 29 Months (last 2 years Issuances)
- 29 Months (last 5 years Issuances)