US2880054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reacting wool with organic diisocyanates in the presence of a tertiary amine
Assignee: Individual
•
Filing: 1956-05-21
•
Granted: 1959-03-31
•
Expires: 1976-05-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:02
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/395
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PROCESS FOR CHEMICALLY MODIFYING WOOL WHICH COMPRISES REACTING WOOL UNDER ESSENTIALLY ANHYDROUS CONDITIONS, IN THE PRESENCE OF A TERTIARY AMINE SELECTED FROM THE GROUP CONSISTING OF PYRIDINE, DIMETHYL ANILINE, QUINOLINE, AND N-ETHYL PIPERIDINE, AT A TEMPERATURE ABOUT FROM 20 TO 120*C. WITH AN ORGANIC DI-ISOCYANATE OF THE FORMULA
Claim 2
Dependent Claim
49 words
A PROCESS FOR CHEMICALLY MODIFYING WOOL WHICH COMPRISES REACTING WOOL UNDER ESSENTIALLY ANHYDROUS CONDITIONS, IN THE PRESENCE OF A TERTIARY AMINE SELECTED FROM THE GROUP CONSISTING OF PYRIDINE, DIMETHYL ANILINE, QUINOLINE, AND N-ETHYL PIPERIDINE, AT A TEMPERATURE ABOUT FROM 20 TO 120*C. WITH AN ORGANIC DI-ISOCYANATE OF THE FORMULA
References Cited (Backward Citations)
GB586549A
Cited
US2482578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |