Patents
US 9253827 B2: Graphite electrodes
- Granted
- 2016-02-02
- Filed
- 2014-11-21 application 14550014
- Type
- Utility · 9 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A graphite electrode exhibits oxidation resistance by modifying the outer radial surface characteristics. The outer radial surface may be modified by providing a textured portion which improves water flow while minimizing water absorbtion. Alternately, a layer of flexible graphite or plurality of particles of exfoliated graphite may be disposed on the outer radial surface of the electrode body.
Source: PVGPATDIS, file of 2026-04-10 (ipg160202.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 |
|---|---|---|---|---|
| Philip Dennis Coleman | Avon, OH | 7 | PVGPATDIS, file of 2026-04-10 | |
| Michael Frastaci | Parma, OH | 4 | PVGPATDIS, file of 2026-04-10 | |
| Gregory E. Murray | Parma, OH | 2 | PVGPATDIS, file of 2026-04-10 | |
| Marco Napolitano | Cleveland, OH | 3 | PVGPATDIS, file of 2026-04-10 | |
| Aaron Tomasek | Lodi, OH | 9 | PVGPATDIS, file of 2026-04-10 | |
| Brian Bowman | Westlake, OH | 3 | PVGPATDIS, file of 2026-04-10 | |
| Daniel W. Krassowski | Los Gatos, CA | 4 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H05B | Electric heating; electric light sources not otherwise provided for; circuit arrangements for electric light sources, in general | H05B7/07 | PVGPATDIS, file of 2026-04-10 |
| H01M | Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy | H01M4/96 | PVGPATDIS, file of 2026-04-10 |
| Y02E | Reduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution | Y02E60/50 | PVGPATDIS, file of 2026-04-10 |
| Y10T | Technical subjects covered by former us classification | Y10T29/49117 | 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 | 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 |
| 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 |
| 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 |
| 2018-02-12 | Release of security interest Release of security interest | JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT signed 2018-02-12 | GRAFTECH INTERNATIONAL HOLDINGS INC. BROOKLYN HEIGHTS, OH | 45308/567 | ECORSEXC, file of 2026-09-25 |
| 2018-01-24 | Assignment Assignment of assignor's interest | COLEMAN, PHILIP D. signed 2012-09-17 NAPOLITANO, MARCO signed 2012-09-17 BOWMAN, BRIAN signed 2012-09-18 FRASTACI, MICHAEL signed 2012-09-20 TOMASEK, AARON signed 2012-10-03 MURRAY, GREGORY E. signed 2012-10-04 KRASSOWSKI, DANIEL W. signed 2012-10-09 | GRAFTECH INTERNATIONAL HOLDINGS INC. BROOKLYN HEIGHTS, OH | 44722/74 | ECORSEXC, file of 2026-09-25 |
| 2015-06-10 | Security interest Security interest Security agreement | FIBER MATERIALS INC. signed 2015-05-22 GRAFTECH INTERNATIONAL HOLDINGS INC. signed 2015-05-22 | JPMORGAN CHASE BANK N.A., AS COLLATERAL AGENT NEW YORK, NY | 35839/754 | 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.