Patents
US 12072521 B2: Optical fiber with low thermo-optic coefficient
- Granted
- 2024-08-27
- Filed
- 2020-10-23 application 17079090
- Type
- Utility · 16 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A fiber includes a core and cladding, both of which may have temperature dependent indices of refraction. The materials and size of the core and cladding may be selected such that as the temperature of the core and/or cladding is heated above room temperature, the fiber transitions from supporting multimode optical waveguiding to supporting single mode waveguiding.
Source: PVGPATDIS, file of 2026-04-10 (ipg240827.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| The Board of Trustees of the University of Illinois 1,493 patents | US company or organization | Urbana, IL | THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS Nonprofit EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
| Clemson University 122 patents | US company or organization | Clemson, SC | Clemson University State business registration EXACT high confidence: identical full name and state Clemson University College or university EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Peter Dragic | Champaign, IL | 13 | PVGPATDIS, file of 2026-04-10 | |
| John Ballato | Clemson, SC | 12 | PVGPATDIS, file of 2026-04-10 | |
| Thomas W. Hawkins | Clemson, SC | 22 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G02B | Optical elements, systems or apparatus | G02B6/0003 | PVGPATDIS, file of 2026-04-10 |
| C03C | Chemical composition of glasses, glazes or vitreous enamels; surface treatment of glass; surface treatment of fibres or filaments made from glass, minerals or slags; joining glass to glass or other materials | C03C13/045 | PVGPATDIS, file of 2026-04-10 |
| H01S | Devices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light; devices using stimulated emission of electromagnetic radiation in wave ranges other than optical | H01S3/06716 | 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 |
|---|---|---|---|---|---|
| 2020-10-26 | Assignment Assignment of assignor's interest | BALLATO, JOHN signed 2020-10-23 HAWKINS, THOMAS W. signed 2020-10-26 | CLEMSON UNIVERSITY CLEMSON, SC | 54165/643 | ECORSEXC, file of 2026-09-25 |
| 2020-10-26 | Assignment Assignment of assignor's interest | DRAGIC, PETER D. signed 2020-10-23 | THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS URBANA, IL | 54165/506 | 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.