Patents
US 12758923 B2: Methods for manufacturing hollow fiber carbon membranes
- Granted
- 2026-10-13
- Filed
- 2022-07-21 application 18580191
- Type
- Utility · 12 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method of manufacturing a hollow fiber carbon membrane, the method includes heating a polymeric precursor to a pyrolysis temperature that is greater than or equal to 900° C. and less than or equal to 1200° C., and pyrolyzing the polymeric precursor at the pyrolysis temperature in a pyrolysis atmosphere that comprises oxygen in an amount that is greater than 0 ppm and less than 200 ppm.
Source: PTBLXML, file of 2026-10-13 (ipgb20261013.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Dow Global Technologies LLC 4,152 patents | US company or organization | Midland, MI | DOW GLOBAL TECHNOLOGIES LLC State business registration EXACT high confidence: identical full name and state | PTBLXML, file of 2026-10-13 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Abhishek Roy | Freeport, TX | 26 | PTBLXML, file of 2026-10-13 | |
| Thomas C. Fitzgibbons | Freeport, TX | PTBLXML, file of 2026-10-13 | ||
| Li Tang | Freeport, TX | PTBLXML, file of 2026-10-13 | ||
| Surendar R. Venna | Freeport, TX | PTBLXML, file of 2026-10-13 | ||
| Derrick W. Flick | Freeport, TX | 8 | PTBLXML, file of 2026-10-13 | |
| Nikki J. Montanez | Freeport, TX | PTBLXML, file of 2026-10-13 | ||
| Hali J. McCurry | Freeport, TX | PTBLXML, file of 2026-10-13 | ||
| James B. Heard | Freeport, TX | PTBLXML, file of 2026-10-13 | ||
| Barry B. Fish | Freeport, TX | 24 | PTBLXML, file of 2026-10-13 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| B01D | Separation | B01D67/0067 | PTBLXML, file of 2026-10-13 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
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.