Patents
US 10655273 B2: Dyed fibers and methods of dyeing using N,N′-diacetyl indigo
- Granted
- 2020-05-19
- Filed
- 2018-06-29 application 16023652
- Type
- Utility · 14 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Described herein are methods of dyeing fibers, and dyed fibers and textiles made using the methods. The methods involve contacting a fiber with a dye liquor at a dye liquor temperature of about 30° C. to 115° C. to form a dyed fiber, wherein the dye liquor components include at least N,N′-diacetyl indigo and a salt solution having ionic strength of about 0.03 M (moles/liter) to 1 M and pH of about 3 to 8 at 20° C. The contacting is generally carried out for a contact period of about 10 seconds to 30 minutes, for example by immersing the fiber in the heated dye liquor. By using the disclosed methods, N,N′-diacetyl indigo is substantially uniformly distributed on the dyed fiber to provide intense, vibrant colors affixed thereto. Dyed textiles display substantially uniform color.
Source: PVGPATDIS, file of 2026-04-10 (ipg200519.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Stony Creek Colors, Inc. 2 patents | US company or organization | Goodlettsville, TN | STONY CREEK COLORS, INC. State business registration EXACT high confidence: identical full name and state Stony Creek Colors, Inc. Form D issuer EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Mark D. Keranen | Gatlinburg, TN | 3 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| D06P | Dyeing or printing textiles; dyeing leather, furs or solid macromolecular substances in any form | D06P1/228 | PVGPATDIS, file of 2026-04-10 |
| C09B | Organic dyes or closely-related compounds for producing dyes ; , e.g. pigments; mordants; lakes | C09B7/02 | 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 |
|---|---|---|---|---|---|
| 2024-10-07 | Assignment Assignment of assignor's interest | STONY CREEK COLORS, INC. signed 2024-09-28 | RENEWAL FUND 2 LLC NASHVILLE, TN | 68810/254 | ECORSEXC, file of 2026-09-25 |
| 2020-02-05 | Assignment Assignment of assignor's interest | KERANEN, MARK D. signed 2018-06-11 | STONY CREEK COLORS, INC. GOODLETTSVILLE, TN | 51724/294 | 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.