Patents
US 12459846 B1: System and process for reducing PFAS and microplastics in biosolids using hydrodynamic cavitation and foam fractionation
- Granted
- 2025-11-04
- Filed
- 2025-02-17 application 19055052
- Type
- Utility · 19 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method for reducing particles from biosolids, comprising a storage tank for holding biosolids and an inlet pipe. The inlet pipe delivers biosolids from the storage tank to a screener and then to a percent solids meter. The percent solids meter measures the solid content in the biosolids and sends a signal to an electronic solenoid valve to control water content of the biosolids introduced to the system. A first venturi hydrodynamic cavitation to create vacuum bubbles in the biosolids. A mechanical hydrodynamic cavitation device operably connected to first venturi hydrodynamic cavitation, wherein the mechanical hydrodynamic cavitation device creates vacuum bubbles in the biosolids.
Source: PVGPATDIS, file of 2026-04-10 (ipg251104.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Merrell Bros., Inc. 4 patents | US company or organization | Kokomo, IN | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Terry Merrell | Kokomo, IN | 6 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C05F | Organic fertilisers not covered by subclasses c05b, c05c, e.g. fertilisers from waste or refuse | C05F17/80 | PVGPATDIS, file of 2026-04-10 |
| C02F | Treatment of water, waste water, sewage, or sludge | C02F1/24 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2025-12-08 | Other License | MB HOLDING COMPANY, INC. signed 2025-12-01 | MERRELL BROS., INC. KOKOMO, IN | 73142/344 | PASDL, file of 2026-10-15 |
| 2025-11-26 | Assignment Assignment of assignor's interest | MERRELL, TERRY signed 2025-11-26 MERRELL BROS., INC. signed 2025-11-24 | MB HOLDING COMPANY, INC. KOKOMO, IN | 73041/986 | PASDL, file of 2026-10-15 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.