US2587209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of acrylamides
Assignee: Union Carbide Corp
•
Filing: 1949-08-01
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Granted: 1952-02-26
•
Expires: 1969-08-01
Abstract
No abstract record available.
Inventors
- 👤 Phillips Benjamin
- 👤 Paul S Starcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:57
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/02; C07C233/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A VAPOR PHASE PROCESS FOR MAKING AN ACRYLAMIDE WHICH COMPRISES PASSING A BETA-(LOWER ALKOXY) PROPIONAMIDE OF THE FORMULA
Claim 2
Dependent Claim
18 words
A VAPOR PHASE PROCESS FOR MAKING AN ACRYLAMIDE WHICH COMPRISES PASSING A BETA-(LOWER ALKOXY) PROPIONAMIDE OF THE FORMULA
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) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |