US2793199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile polymerization
Assignee: Wyeth Holdings LLC
•
Filing: 1952-10-08
•
Granted: 1957-05-21
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Expires: 1972-10-08
Abstract
No abstract record available.
Inventors
- 👤 Kerwin K Kurtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:39
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/002; C08F2/12; C08F2/16; C08F20/00; C08F20/02; C08F20/42; C08F20/44
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
11 words
A CONTINUOUS PROCESS WHICH COMPRISES FEEDING A RESIN-FORMING MATERIAL CONTAINING A
Claim 2
Dependent Claim
13 words
A PROCESS ACCORDING TO CLAIM 6 IN WHICH THE RESINFORMING MATERIAL COMPRISES ACRYLONITRILE.
Claim 3
Dependent Claim
30 words
A PROCESS ACCORDING TO CLAIM 6 IN WHICH SAID AQUEOUS DISPERSION CONTAINED A REDUCTION-OXIDATION CATALYST SYSTEM COMPRISING A CHLORATE ION AND A SUFFOXY REDUCING ION IN AN ACIDIC AQUEOUS SOLUTION.
References Cited (Backward Citations)
US2504488A
Cited
US2498226A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |