US2840606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nylon hydrolysis
Assignee: EIDP Inc
•
Filing: 1955-04-15
•
Granted: 1958-06-24
•
Expires: 1975-04-15
Abstract
No abstract record available.
Inventors
- 👤 Bruce M Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:06
CPC Classifications
C; C07; C07D; C07D201/00; C07D201/02; C07D201/12; C07C; C07C51/00; C07C51/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
IN ALKALINE HYDROLYSIS OF A POLYAMIDE CHARACTERIZED BY SEPARATION INTO DIACID AND DIAMINE COMPONENTS UPON ALKALINE HYDROLYSIS, THE IMPROVEMENT COMPRISING ADDING TO THE HYDROLYSIS MIX AN ALIPHATIC ALCOHOL HAVING FROM THREE TO ABOUT EIGHT CARBON ATOMS IN THE MOLECULE.
Claim 2
Dependent Claim
39 words
IN ALKALINE HYDROLYSIS OF A POLYAMIDE CHARACTERIZED BY SEPARATION INTO DIACID AND DIAMINE COMPONENTS UPON ALKALINE HYDROLYSIS, THE IMPROVEMENT COMPRISING ADDING TO THE HYDROLYSIS MIX AN ALIPHATIC ALCOHOL HAVING FROM THREE TO ABOUT EIGHT CARBON ATOMS IN THE MOLECULE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |