Patents
US 12403176 B2: Hydrophobic silk fibroin compositions and methods of making the same
- Granted
- 2025-09-02
- Filed
- 2021-03-25 application 17907404
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The present disclosure relates to compositions, methods of making, and methods of using a modified silk-based composition having a selectively tunable hydrophobicity. The provided compositions include silk fibroin having a haloalkyl substituent. The haloalkyl substituent is coupled to an amino acid of the silk fibroin though a linking agent.
Source: PVGPATDIS, file of 2026-04-10 (ipg250902.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Trustees of Tufts College 297 patents | US company or organization | Medford, MA | Tufts University College or university EXACT high confidence: through the nonprofit with the college's EIN (identical full name and state) TRUSTEES OF TUFTS COLLEGE Nonprofit EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| David L. Kaplan | Concord, MA | 132 | PVGPATDIS, file of 2026-04-10 | |
| Krishna Kumar | Cambridge, MA | 11 | PVGPATDIS, file of 2026-04-10 | |
| Vittorio Montanari | Medford, MA | 3 | PVGPATDIS, file of 2026-04-10 | |
| Morgan Hawker | Clovis, CA | 1 | PVGPATDIS, file of 2026-04-10 | |
| Julia Fountain | Medford, MA | 1 | PVGPATDIS, file of 2026-04-10 | |
| Junqi Wu | Medford, MA | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| A61K | Preparations for medical, dental or toiletry purposes | A61K38/1767 | PVGPATDIS, file of 2026-04-10 |
| C08H | Derivatives of natural macromolecular compounds | C08H1/00 | PVGPATDIS, file of 2026-04-10 |
| C08L | Compositions of macromolecular compounds | C08L89/00 | 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 |
|---|---|---|---|---|---|
| 2023-02-08 | Assignment Assignment of assignor's interest | FOUNTAIN, JULIA signed 2021-04-01 KUMAR, KRISHNA signed 2021-04-01 MONTANARI, VITTORIO signed 2021-04-01 WU, JUNQI signed 2021-04-01 KAPLAN, DAVID L. signed 2021-04-02 HAWKER, MORGAN signed 2021-04-05 | TRUSTEES OF TUFTS COLLEGE MEDFORD, MA | 62623/963 | 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.