Patents
US 11504449 B2: Placental tissue grafts and methods of preparing and using the same
- Granted
- 2022-11-22
- Filed
- 2017-02-20 application 15436914
- Type
- Utility · 11 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method for preparing placenta membrane tissue grafts for medical use, includes obtaining a placenta from a subject, cleaning the placenta, separating the chorion tissue from the amniotic membrane, mounting a selected layer of either the chorion tissue or the amniotic membrane onto a drying fixture, dehydrating the selected layer on the drying fixture, and cutting the selected layer into a plurality of tissue grafts. Preferably, the drying fixture includes grooves or raised edges that define the outer contours of each desired tissue graft, after they are cut, and further includes raised or indented logos that emboss the middle area of the tissue grafts during dehydration and that enables an end user to distinguish the top from the bottom side of the graft. The grafts are comprised of single layers of amnion or chorion, multiple layers of amnion or chorion, or multiple layers of a combination of amnion and chorion.
Source: PVGPATDIS, file of 2026-04-10 (ipg221122.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| MiMedx Group, Inc. 115 patents | US company or organization | Kennesaw, GA | MIMEDX GROUP, INC. Form D issuer EXACT high confidence: identical full name and state MIMEDX GROUP, INC. SEC filer EXACT medium confidence: identical full name, one of each nationally | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| John Daniel | Woodstock, GA | 63 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| A61L | Methods or apparatus for sterilising materials or objects in general; disinfection, sterilisation or deodorisation of air; chemical aspects of bandages, dressings, absorbent pads or surgical articles; materials for bandages, dressings, absorbent pads or surgical articles | A61L27/3604 | PVGPATDIS, file of 2026-04-10 |
| A61K | Preparations for medical, dental or toiletry purposes | A61K35/50 | 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 |
|---|---|---|---|---|---|
| 2024-02-05 | Release of security interest Release of security interest | HAYFIN SERVICES LLP signed 2024-01-19 | MIMEDX GROUP, INC. MARIETTA, GA MIMEDX PROCESSING SERVICES, LLC MARIETTA, GA | 66493/322 | PASDL, file of 2026-10-15 |
| 2020-07-02 | Release of security interest Release of security interest | BLUE TORCH FINANCE LLC, AS COLLATERAL AGENT signed 2020-07-02 | MIMEDX GROUP, INC. MARIETTA, GA MIMEDX PROCESSING SERVICES, LLC MARIETTA, GA | 54075/687 | PASDL, file of 2026-10-15 |
| 2020-07-02 | Security interest Security interest Patent security agreement | MIMEDX GROUP, INC. signed 2020-07-02 MIMEDX PROCESSING SERVICES, LLC signed 2020-07-02 | HAYFIN SERVICES LLP, AS COLLATERAL AGENT LONDON | 53121/833 | PASDL, file of 2026-10-15 |
| 2019-06-11 | Security interest Security interest Security interest | MIMEDX GROUP, INC. signed 2019-06-10 | BLUE TORCH FINANCE LLC, AS COLLATERAL AGENT NEW YORK, NY | 49426/863 | PASDL, file of 2026-10-15 |
| 2018-07-10 | Assignment Assignment of assignor's interest | SURGICAL BIOLOGICS, LLC. signed 2013-05-10 | MIMEDX GROUP, INC. KENNESAW, GA | 46306/240 | PASDL, file of 2026-10-15 |
| 2018-07-10 | Assignment Assignment of assignor's interest | DANIEL, JOHN signed 2013-05-09 | SURGICAL BIOLOGICS, LLC. KENNESAW, GA | 46306/207 | PASDL, file of 2026-10-15 |
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.