Patents
US 11819387 B2: Composite dressings for improved granulation and reduced maceration with negative-pressure treatment
- Granted
- 2023-11-21
- Filed
- 2018-06-05 application 16000368
- Type
- Utility · 30 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Dressings for use in negative pressure therapy and methods of making the dressings are provided herein. The dressings may comprise at least two layers in a stacked configuration. The first layer may comprise a manifold layer and the second layer may comprise a silicone gel layer. The second layer may have perforations to form fluid restrictions that can open and close when used in negative pressure therapy. The perforated second layer may be formed by a first and a second curing step.
Source: PVGPATDIS, file of 2026-04-10 (ipg231121.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| KCI Licensing, Inc. 911 patents | US company or organization | San Antonio, TX | TX:32096292969 State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Timothy Mark Robinson | Shillingstone, GB | 356 | PVGPATDIS, file of 2026-04-10 | |
| Christopher Brian Locke | Bournemouth, GB | 580 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| A61F | Filters implantable into blood vessels; prostheses; devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents; orthopaedic, nursing or contraceptive devices; fomentation; treatment or protection of eyes or ears; bandages, dressings or absorbent pads; first-aid kits | A61F13/05 | PVGPATDIS, file of 2026-04-10 |
| A61M | Devices for introducing media into, or onto, the body ; devices for transducing body media or for taking media from the body ; devices for producing or ending sleep or stupor | A61M1/90 | 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 |
|---|---|---|---|---|---|
| 2024-02-01 | Assignment Assignment of assignor's interest | 3M INNOVATIVE PROPERTIES COMPANY signed 2024-02-01 | SOLVENTUM INTELLECTUAL PROPERTIES COMPANY MAPLEWOOD, MN | 66445/336 | PASDL, file of 2026-10-15 |
| 2023-09-13 | Correction Corrective assignment to correct the application listed on schedule of ip rights attached to assignment at lines 55: 71; 89; 116-129; and 131 need to be deleted previously recorded at reel: 064788 frame: 0823. assignor(s) hereby confirms the assignment. | KCI LICENSING, INC. signed 2023-08-30 | 3M INNOVATIVE PROPERTIES COMPANY SAINT PAUL, MN | 64886/479 | PASDL, file of 2026-10-15 |
| 2023-08-31 | Assignment Assignment of assignor's interest | KCI LICENSING, INC. signed 2023-08-30 | 3M INNOVATIVE PROPERTIES COMPANY ST. PAUL, MN | 64788/823 | PASDL, file of 2026-10-15 |
| 2019-01-10 | Assignment Assignment of assignor's interest | ROBINSON, TIMOTHY MARK signed 2018-12-10 LOCKE, CHRISTOPHER BRIAN signed 2018-12-07 | KCI LICENSING, INC. SAN ANTONIO, TX | 47958/893 | 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.