Patents
US 12070732 B2: Highly effective functional additive products
- Granted
- 2024-08-27
- Filed
- 2018-12-20 application 17309776
- Type
- Utility · 19 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
This invention concerns highly effective functional additive products that comprise diatomite. More particularly, it concerns such functional additive products possessing particle size distributions which make them more effective as functional additives in filled systems. Higher effectiveness is demonstrated through lower Standard Sheen and/or reduced unit consumption relative to diatomite functional additives already in the public domain. Such products may also possess high brightness, low tint and/or an absence of detectable crystalline silica.
Source: PVGPATDIS, file of 2026-04-10 (ipg240827.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| U.S. Silica Company 18 patents | US company or organization | Katy, TX | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Scott K. Palm | Reno, NV | 9 | PVGPATDIS, file of 2026-04-10 | |
| Fangfu Zhang | Reno, NV | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B01J | Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus | B01J20/14 | PVGPATDIS, file of 2026-04-10 |
| C09D | Coating compositions, e.g. paints, varnishes or lacquers; filling pastes; chemical paint or ink removers; inks; correcting fluids; woodstains; pastes or solids for colouring or printing; use of materials therefor | C09D5/028 | PVGPATDIS, file of 2026-04-10 |
| C08K | Use of inorganic or non-macromolecular organic substances as compounding ingredients | C08K3/36 | 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 |
|---|---|---|---|---|---|
| 2024-07-31 | Security interest Security interest Notice of grant of security interest in intellectual property (first lien) | EP MINERALS, LLC signed 2024-07-31 | WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL AGENT ISELIN, NJ | 68312/958 | ECORSEXC, file of 2026-09-25 |
| 2021-07-07 | Assignment Assignment of assignor's interest | PALM, SCOTT KEVIN signed 2018-12-19 ZHANG, FANGFU signed 2018-12-19 | EP MINERALS, LLC RENO, NV | 56772/481 | ECORSEXC, file of 2026-09-25 |
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.