Patents
US 10782266 B1: Non-destructive evaluation of internal damage in fiber reinforced composite materials by delivery of a two-part magnetic nanoparticle chemistry
- Granted
- 2020-09-22
- Filed
- 2017-10-31 application 15799462
- Type
- Utility · 16 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method of making a fiber reinforced composite material having a two-part liquid solution forming magnetic nanoparticles. The method includes the steps of preparing a fiber reinforced composite having dispersed fibers and a polymer matrix and having a plurality of vascular channels therethrough. A first liquid solution is incorporated in at least one of the vascular channels and a second liquid solution is incorporated in at least one other of the vascular channels. When the liquid solutions are joined together because of damage or cracking to the composite, the liquids form a ferrous magnetic material. Non-destructive evaluation of internal damage to the fiber reinforced composite material may be accomplished by magnetic field disturbance detection, thermal detection, or visual detection.
Source: PVGPATDIS, file of 2026-04-10 (ipg200922.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| The University of Tulsa 48 patents | US company or organization | Tulsa, OK | THE UNIVERSITY OF TULSA State business registration EXACT high confidence: identical full name and state THE UNIVERSITY OF TULSA Federal lobbying client EXACT high confidence: identical full name and state University of Tulsa College or university FUZZY medium confidence: same name (governing-board words and legal endings aside) and state UNIVERSITY OF TULSA Nonprofit FUZZY medium confidence: same name (governing-board words and legal endings aside) and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Matthew Douglass Crall | Little Rock, AR | 4 | PVGPATDIS, file of 2026-04-10 | |
| Samuel G. Laney | Tulsa, OK | 2 | PVGPATDIS, file of 2026-04-10 | |
| Michael W. Keller | Tulsa, OK | 7 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B29C | Shaping or joining of plastics; shaping of material in a plastic state, not otherwise provided for; after-treatment of the shaped products, e.g. repairing | B29C70/88 | PVGPATDIS, file of 2026-04-10 |
| G01N | Investigating or analysing materials by determining their chemical or physical properties | G01N21/8803 | PVGPATDIS, file of 2026-04-10 |
| B29K | Indexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for ; moulds, ; reinforcements, fillers or preformed parts, e.g. inserts | B29K2309/08 | PVGPATDIS, file of 2026-04-10 |
| B29L | Indexing scheme associated with subclass b29c, relating to particular articles | B29L2031/737 | 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 |
|---|---|---|---|---|---|
| 2018-09-12 | Government interest Confirmatory license | UNIVERSITY OF TULSA signed 2018-09-06 | NATIONAL SCIENCE FOUNDATION ALEXANDRIA, VA | 47055/803 | ECORSEXC, file of 2026-09-25 |
| 2017-10-31 | Assignment Assignment of assignor's interest | CRALL, MATTHEW signed 2017-10-30 KELLER, MICHAEL signed 2017-10-30 LANEY, SAMUEL signed 2017-10-30 | THE UNIVERSITY OF TULSA TULSA, OK | 43996/42 | 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.