Patents
US 10611684 B2: Recovery and beneficiation of pozzolan deposits for enhanced performance in concrete
- Granted
- 2020-04-07
- Filed
- 2016-08-08 application 15751100
- Type
- Utility · 18 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Disclosed is a method for enhancing the performance of concrete includes, providing a cementitious mixture comprising cement and processed high calcium fly ash; wherein a processing of the processed high calcium fly ash neutralizes a cementitious reactivity of a high calcium fly ash, wherein a pozzolanic reactivity of the processed high calcium fly ash is maintained during the processing of the high calcium fly ash. The processing of the high calcium fly ash includes hydrating and carbonating the high calcium fly ash. The processing further includes excavating the high calcium fly ash from a landfill or surface impoundment after the hydrating and carbonating. Also disclosed is a portland-pozzolan blended cement mixture with clinker, gypsum, and a pozzolanic material, such as processed high calcium fly ash. After processing, the cementitious reactivity of a high calcium fly ash is neutralized, while pozzolanic reactivity of the high calcium fly ash is maintained.
Source: PVGPATDIS, file of 2026-04-10 (ipg200407.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Headwaters, Inc. 19 patents | US company or organization | South Jordan, UT | HEADWATERS INC State business registration EXACT high confidence: identical full name and state HEADWATERS INC SEC filer EXACT medium confidence: identical full name, one of each nationally | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Rafic Y. Minkara | Kennesaw, GA | 6 | PVGPATDIS, file of 2026-04-10 | |
| Eleazar Ivan Diaz-Loya | Taylorsville, GA | 3 | PVGPATDIS, file of 2026-04-10 | |
| Douglas S. Rhodes | Taylorsville, GA | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C04B | Lime, magnesia; slag; cements; compositions thereof, e.g. mortars, concrete or like building materials; artificial stone ; ceramics ; refractories; treatment of natural stone | C04B18/08 | PVGPATDIS, file of 2026-04-10 |
| Y02W | Climate change mitigation technologies related to wastewater treatment or waste management | Y02W30/91 | 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 |
|---|---|---|---|---|---|
| 2025-09-16 | Release of security interest Release of security interest in patents at reel/frame no. 67963/0364 | MIZUHO BANK, LTD., AS AGENT signed 2025-09-15 | EM RESOURCES LLC SOUTH JORDAN, UT | 72872/638 | ECORSEXC, file of 2026-09-25 |
| 2025-09-15 | Release of security interest Release of security interest in patents at reel/frame no. 70696/0397 | JEFFERIES FINANCE LLC, AS COLLATERAL AGENT signed 2025-09-15 | EM RESOURCES LLC SOUTH JORDAN, UT | 72910/155 | ECORSEXC, file of 2026-09-25 |
| 2025-04-01 | Security interest Security interest Security interest | EM RESOURCES LLC signed 2025-02-12 | JEFFERIES FINANCE LLC, AS COLLATERAL AGENT NEW YORK, NY | 70696/397 | ECORSEXC, file of 2026-09-25 |
| 2025-02-12 | Release of security interest Release of security interest in patents recorded at r/f 059002/0270 | UMB BANK, N.A. signed 2025-02-12 | EM RESOURCES LLC (F/K/A BORAL RESOURCES LLC) SOUTH JORDAN, UT | 70191/325 | ECORSEXC, file of 2026-09-25 |
| 2024-06-28 | Security interest Security interest Patent security agreement | EM RESOURCES LLC signed 2024-06-20 | MIZUHO BANK, LTD. NEW YORK, NY | 67963/364 | ECORSEXC, file of 2026-09-25 |
| 2024-06-20 | Release of security interest Release of security interest | MUFG BANK, LTD signed 2024-06-20 | EM RESOURCES LLC (FORMERLY KNOWN AS BORAL RESOURCES LLC) SOUTH JORDAN, UT | 67799/395 | ECORSEXC, file of 2026-09-25 |
| 2022-03-23 | Name change Change of name | BORAL RESOURCES LLC signed 2022-02-17 | EM RESOURCES LLC SOUTH JORDAN, UT | 59482/239 | ECORSEXC, file of 2026-09-25 |
| 2022-02-10 | Security interest Security interest Security interest | BORAL RESOURCES LLC signed 2022-02-10 | MUFG BANK, LTD. NEW YORK, NY | 59003/211 | ECORSEXC, file of 2026-09-25 |
| 2022-02-10 | Security interest Security interest Security interest | BORAL RESOURCES LLC signed 2022-02-10 | UMB BANK, N.A. DALLAS, TX | 59002/270 | ECORSEXC, file of 2026-09-25 |
| 2022-01-11 | Assignment Assignment of assignor's interest | BORAL INDUSTRIES INC. signed 2021-12-02 | BORAL RESOURCES LLC ROSWELL, GA | 58614/959 | ECORSEXC, file of 2026-09-25 |
| 2021-03-11 | Merger Merger | HEADWATERS INCORPORATED signed 2020-06-30 | BORAL INDUSTRIES INC. ROSWELL, GA | 55566/317 | ECORSEXC, file of 2026-09-25 |
| 2018-05-15 | Assignment Assignment of assignor's interest | DIAZ-LOYA, ELEAZAR IVAN signed 2018-05-03 RHODES, DOUGLAS S. signed 2018-05-03 MINKARA, RAFIC Y. signed 2018-05-10 | HEADWATERS INCORPORATED SOUTH JORDAN, UT | 45802/235 | 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.