IP Library Granted Patent US 11,739,217
Granted Patent B2
US 11,739,217 · App. 18/092,816 · Granted Aug 29, 2023

Engineered skin equivalent, method of manufacture thereof and products derived therefrom

Inventors: Ingvar Helgason (South San Francisco, CA); Dusko Ilic (London, GB)
Assignees: VitroLabs Inc; King's College London
C08L89/06C12N5/0625C12N5/0629C12N5/0698C12N11/02C14C3/02C14C13/00C12N2501/155C12N2501/385C12N2502/091C12N2502/094C12N2502/13C12N2506/45C12N2533/30C12N2533/54
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,739,217
App. No.
18/092,816
Granted
Aug 29, 2023
Kind
B2
Abstract

Disclosed herein are synthetic leathers, artificial epidermal layers, artificial dermal layers, layered structures, products produced therefrom and methods of producing the same.

Claims (24)

1. A method of forming a tanned synthetic leather, wherein the method comprises:

a) forming an artificial dermal layer comprising a fibroblast on a scaffold, wherein the scaffold comprises cellulose or a modified version thereof;

b) processing the artificial dermal layer to provide an extracellular matrix; and

c) tanning at least a portion of the extracellular matrix to generate the tanned synthetic leather.

2. The method of claim 1 , wherein the cellulose or a modified version thereof comprises rayon.

3. The method of claim 1 , wherein a thickness of the artificial dermal layer ranges from about 0.02 mm to about 5 mm.

4. The method of claim 1 , wherein the processing comprises a member selected from the group consisting of: a preserving, a soaking, a bating, a pickling, a depickling, a thinning, a retanning, a lubricating, a crusting, a wetting, a sammying, a shaving, a rechroming, a neutralizing, a dyeing, a fatliquoring, a filling, a stripping, a stuffing, a whitening, a fixating, a setting, a drying, a conditioning, a milling, a staking, a buffing, a finishing, an oiling, a brushing, a padding, an impregnating, a spraying, a roller coating, a curtain coating, a polishing, a plating, an embossing, an ironing, a glazing, a tumbling, and any combination thereof.

5. The method of claim 1 , wherein the processing comprises removing at least a portion of the artificial dermal layer to provide the extracellular matrix.

6. The method of claim 1 , wherein the extracellular matrix comprises collagen.

7. The method of claim 6 , wherein the collagen comprises a type I collagen, a type III collagen, or a combination thereof.

8. The method of claim 1 , wherein the tanning comprises a vegetable tanning, a chrome tanning, an aldehyde tanning, a syntan tanning, a bacterial dyeing, or any combination thereof.

9. The method of claim 1 , further comprising forming the tanned synthetic leather into one or more of a watch strap, a belt, a packaging, a shoe, a boot, a footwear, a glove, a clothing, a luggage, a bag, a clutch, a purse, a backpack, a wallet, a saddle, a harness, a whip, or any combination thereof.

10. The method of claim 1 , wherein the artificial dermal layer comprises cultured mammalian cells.

11. A method of forming a tanned synthetic leather, wherein the method comprises:

a) forming a cell layer comprising a fibroblast on a scaffold, wherein the scaffold comprises cellulose or a modified version thereof;

b) wherein the cell layer comprises collagen; and

c) tanning at least a portion of the collagen to generate the tanned synthetic leather.

12. The method of claim 11 , wherein the cell layer comprises a dermal cell layer.

13. The method of claim 11 , wherein the cellulose or a modified version thereof comprises rayon.

14. The method of claim 11 , wherein the collagen comprises a type I collagen, a type III collagen, or a combination thereof.

15. The method of claim 11 , wherein the cell layer is cultured in vitro.

16. The method of claim 15 , wherein the cell layer comprises mammalian cells.

17. The method of claim 11 , wherein tanning comprises a vegetable tanning, a chrome tanning, an aldehyde tanning, a syntan tanning, a bacterial dyeing, or any combination thereof.

18. The method of claim 11 , further comprising forming the tanned synthetic leather into one or more of a watch strap, a belt, a packaging, a shoe, a boot, a footwear, a glove, a clothing, a luggage, a bag, a clutch, a purse, a backpack, a wallet, a saddle, a harness, a whip, or any combination thereof.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 26, 2025
From: VITROLABS INC
To: FAIRCRAFT
Reel/Frame 071535/0661 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 9, 2023
From: HELGASON, INGVAR
To: VITROLABS INC
Reel/Frame 062318/0810 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 9, 2023
From: ILIC, DUSKO
To: KING'S COLLEGE LONDON
Reel/Frame 062337/0211 →
Continuity (7)
Continuation 17751440 · May 23, 2022
Continuation 17366550 · Jul 2, 2021
Continuation 16892839 · Jun 4, 2020
Continuation 16299734 · Mar 12, 2019
Continuation 15493083 · Apr 20, 2017
Provisional Application 62325819 · Apr 21, 2016
Related Publication 20230159758A1 · May 25, 2023
Cited By (1)
US 12,410,317