IP Library Granted Patent US 12,611,795
Granted Patent B2
US 12,611,795 · App. 17/895,268 · Granted Apr 28, 2026

Highly-insulated ingot mold

Inventor: Donald Abrino (Curwensville, PA)
Assignee: HarbisonWalker International Holdings, Inc.
B28B7/36C01F5/02B22C1/00B22C3/00B22D7/00B22D7/06B22D7/068B22D41/00B22D41/02B28B7/00C01F5/00F27B2014/0843F27B2014/104F27D1/00F27D1/0006F27D1/003F27D2001/047F27D1/10F27D1/1808
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Quick Facts
Patent No.
US 12,611,795
App. No.
17/895,268
Granted
Apr 28, 2026
Kind
B2
Abstract

An ingot mold for curing fused and melted material is provided. The ingot mold includes a steel box, a foamed carbon layer, and a graphite block layer. The foamed carbon layer is formed inside the steel box. The graphite block layer is formed inside the steel box.

Claims (38)

1 . An ingot mold for curing fused and melted material, the ingot mold comprising:

a steel box;

an oxide-based insulation material layer lining an inner surface of the steel box;

a foamed carbon layer formed over the oxide-based insulation material layer; and

a graphite block layer formed over the oxide-based insulation material layer,

wherein the foamed carbon layer lines the oxide-based insulation material layer, and

wherein the graphite block layer lines the foamed carbon layer to contact the fused and melted material, the fused and melted material being selected from the group consisting of MgO, alpha alumina, beta alumina, calcia, chromia, silica, zirconia, silicon carbide, and any combination thereof.

2 . An ingot mold for curing fused and melted material, the ingot mold comprising:

a steel box;

an oxide-based insulation material layer lining an inner surface of the steel box;

a foamed carbon layer formed over the oxide-based insulation material layer; and

a graphite block layer formed over the oxide-based insulation material layer,

wherein the graphite block layer lines the oxide-based insulation material layer, and

wherein the foamed carbon layer lines the graphite block layer to contact the fused and melted material, the fused and melted material being selected from the group consisting of MgO, alpha alumina, beta alumina, calcia, chromia, silica, zirconia, silicon carbide, and any combination thereof.

3 . The ingot mold according to claim 1 , wherein the oxide-based insulation material layer comprises bubble alumina.

4 . The ingot mold according to claim 2 , wherein the oxide-based insulation material layer comprises bubble alumina.

5 . The ingot mold according to claim 1 , wherein a thickness of the foamed carbon layer is in a range from one to twelve inches,

wherein a thickness of the graphite block layer is about two inches, and

wherein a thickness of the oxide-based material layer is about 2.5 inches.

6 . The ingot mold according to claim 1 , further comprising:

a lid, comprising:

a steel frame corresponding with a construction of the steel box;

an oxide-based insulation material layer lining an inner surface of the steel frame and corresponding with the oxide-based insulation material layer lining the inner surface of the steel box;

a foamed carbon layer formed inside the steel frame and corresponding with a construction of the foamed carbon layer formed inside the steel box; and

a graphite block layer formed inside the steel frame and corresponding with a construction of the graphite block layer formed inside the steel box,

wherein the foamed carbon layer of the lid lines the oxide-based insulation material layer of the lid, and

wherein the graphite block layer of the lid lines the foamed carbon layer of the lid.

7 . The ingot mold according to claim 2 , further comprising:

a lid, comprising:

a steel frame corresponding with a construction of the steel box;

an oxide-based insulation material layer lining an inner surface of the steel frame and corresponding with the oxide-based insulation material layer lining the inner surface of the steel box;

a foamed carbon layer formed inside the steel frame and corresponding with a construction of the foamed carbon layer formed inside the steel box; and

a graphite block layer formed inside the steel frame and corresponding with a construction of the graphite block layer formed inside the steel box,

wherein the graphite block layer of the lid lines the oxide-based insulation material layer of the lid, and

wherein the foamed carbon layer of the lid lines the graphite block layer of the lid.

8 . The ingot mold according to claim 2 , wherein a thickness of the foamed carbon layer is in a range from one to twelve inches,

wherein a thickness of the graphite block layer is about two inches, and

wherein a thickness of the oxide-based material layer is about 2.5 inches.

Assignments (4)
SECURITY AGREEMENT Recorded May 25, 2023
From: HARBISONWALKER INTERNATIONAL, INC.; HARBISONWALKER INTERNATIONAL HOLDINGS, INC.; HARBISONWALKER INTERNATIONAL MINERALS, INC.
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 063783/0851 →
BNPP PATENT SECURITY AGREEMENT Recorded May 25, 2023
From: HARBISONWALKER INTERNATIONAL, INC.; HARBISONWALKER INTERNATIONAL HOLDINGS, INC.; HARBISONWALKER INTERNATIONAL MINERALS, INC.
To: BNP PARIBAS
Reel/Frame 063784/0283 →
NOTES PATENT SECURITY AGREEMENT Recorded May 25, 2023
From: HARBISONWALKER INTERNATIONAL, INC.; HARBISONWALKER INTERNATIONAL HOLDINGS, INC.; HARBISONWALKER INTERNATIONAL MINERALS, INC.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
Reel/Frame 063784/0481 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 25, 2022
From: ABRINO, DONALD
To: HARBISONWALKER INTERNATIONAL HOLDINGS, INC.
Reel/Frame 060898/0288 →