Patents
US 10253264 B2: Method of producing needle coke for low CTE graphite electrodes
- Granted
- 2019-04-09
- Filed
- 2017-10-01 application 15721926
- Type
- Utility · 16 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method of producing low CTE graphite electrodes from needle coke formed from a coal tar distillate material having a relatively high initial boiling point.
Source: PVGPATDIS, file of 2026-04-10 (ipg190409.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| GrafTech International Holdings Inc. 65 patents | US company or organization | Seven Hills, OH | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Douglas J. Miller | North Olmsted, OH | 17 | PVGPATDIS, file of 2026-04-10 | |
| Irwin C. Lewis | Strongsville, OH | 14 | PVGPATDIS, file of 2026-04-10 | |
| Ching-Feng Chang | Strongsville, OH | 13 | PVGPATDIS, file of 2026-04-10 | |
| Richard T. Lewis | Auburn, OH | 5 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C10B | Destructive distillation of carbonaceous materials for production of gas, coke, tar, or similar materials | C10B55/00 | PVGPATDIS, file of 2026-04-10 |
| C04B | Lime, magnesia; slag; cements; compositions thereof, e.g. mortars, concrete or like building materials; artificial stone ; ceramics ; refractories; treatment of natural stone | C04B35/522 | PVGPATDIS, file of 2026-04-10 |
| C10C | Working-up pitch, asphalt, bitumen, tar; pyroligneous acid | C10C1/04 | PVGPATDIS, file of 2026-04-10 |
| C10L | Fuels not otherwise provided for; natural gas; synthetic natural gas obtained by processes not covered by subclasses c10g or c10k; liquified petroleum gas; use of additives to fuels or fires; fire-lighters | C10L9/08 | PVGPATDIS, file of 2026-04-10 |
| F27D | Details or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace | F27D11/08 | 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 |
|---|---|---|---|---|---|
| 2024-12-23 | Security interest Security interest Security interest | GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2024-12-23 | U.S. BANKS TRUST COMPANY, NATIONAL ASSOCIATION EDISON, NJ | 72905/832 | ECORSEXC, file of 2026-09-25 |
| 2024-12-23 | Security interest Security interest Security interest | GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2024-12-23 | U.S. BANKS TRUST COMPANY, NATIONAL ASSOCIATION EDISON, NJ | 72905/497 | ECORSEXC, file of 2026-09-25 |
| 2024-12-23 | Release of security interest Termination and release of patent security agreement (reel 054724 frame 0588 and 063798 frame 0928) | U.S. BANK TRUST COMPANY signed 2024-12-23 | GRAFTECH INTERNATIONAL HOLDINGS INC. BROOKLYN HEIGHTS, OH | 69762/518 | ECORSEXC, file of 2026-09-25 |
| 2024-12-23 | Release of security interest Termination and release of patent security agreement (reel 064075 frame 0455) | U.S. BANK TRUST COMPANY signed 2024-12-23 | GRAFTECH INTERNATIONAL HOLDINGS INC. BROOKLYN HEIGHTS, OH | 69762/491 | ECORSEXC, file of 2026-09-25 |
| 2024-12-23 | Security interest Security interest Security interest | GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2024-12-23 | GLAS AMERICAS LLC JERSEY CITY, NJ | 69666/444 | ECORSEXC, file of 2026-09-25 |
| 2023-06-27 | Security interest Security interest Security interest | GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2023-06-26 | U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, AS COLLATERAL AGENT CLEVELAND, OH | 64075/455 | ECORSEXC, file of 2026-09-25 |
| 2023-05-30 | Security interest Security interest Security interest | GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2023-05-24 | JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT BROOKLYN, NY | 63798/907 | ECORSEXC, file of 2026-09-25 |
| 2022-04-04 | Merger Merger and change of name | GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2007-09-19 UCAR CARBON COMPANY INC. signed 2007-09-19 | GRAFTECH INTERNATIONAL HOLDINGS INC. BROOKLYN HEIGHTS, OH | 59485/97 | ECORSEXC, file of 2026-09-25 |
| 2022-03-15 | Correction Corrective assignment to correct the receiving party name should be ucar carbon company inc. previously recorded at reel: 048479 frame: 0596. assignor(s) hereby confirms the assignment. | LEWIS, IRWIN C. signed 2006-08-10 LEWIS, RICHARD THOMAS signed 2006-08-10 CHANG, CHING-FENG signed 2006-08-11 MILLER, DOUGLAS J. signed 2006-08-25 | UCAR CARBON COMPANY INC. PARMA, OH | 59367/40 | ECORSEXC, file of 2026-09-25 |
| 2020-12-22 | Security interest Security interest Security interest | GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2020-12-22 | U.S. BANK NATIONAL ASSOCIATION, AS AGENT CLEVELAND, OH | 54724/588 | ECORSEXC, file of 2026-09-25 |
| 2019-03-01 | Assignment Assignment of assignor's interest | LEWIS, IRWIN C. signed 2006-08-10 LEWIS, RICHARD T. signed 2006-08-10 CHANG, CHING-FENG signed 2006-08-11 MILLER, DOUGLAS J signed 2006-08-25 | UCAR CARBON COMPANY PARMA, OH | 48479/596 | ECORSEXC, file of 2026-09-25 |
| 2018-02-12 | Security interest Security interest Security interest | GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2018-02-12 | JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT BROOKLYN, NY | 45308/591 | 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.