US3192189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for recovering monomeric materials by a stripping operation in the presence of a chloroxy salt
Assignee: Wyeth Holdings LLC
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Filing: 1962-09-11
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Granted: 1965-06-29
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Expires: 1982-09-11
Abstract
No abstract record available.
Inventors
- 👤 Nakajima Akira
- 👤 Kajitani Yuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:16
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/14; C08F6/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
IN A METHOD OF RECOVERING MONOMERIC MATERIAL COMPRISING ACRYLONITRILE BY A STRIPPING OPERATION FROM A POLYMER SLURRY CONTAINING SAID MONOMERIC MATERIAL, THE IMPROVEMENT COMPRISING ADDING TO THE POLYMER SLURRY AT LEAST ONE ALKALI METAL SALT OF A CHLOROXY ACID AND STRIPPING SAID MONOMERIC MATERIAL FROM SAID SLURRY.
Claim 2
Dependent Claim
47 words
IN A METHOD OF RECOVERING MONOMERIC MATERIAL COMPRISING ACRYLONITRILE BY A STRIPPING OPERATION FROM A POLYMER SLURRY CONTAINING SAID MONOMERIC MATERIAL, THE IMPROVEMENT COMPRISING ADDING TO THE POLYMER SLURRY AT LEAST ONE ALKALI METAL SALT OF A CHLOROXY ACID AND STRIPPING SAID MONOMERIC MATERIAL FROM SAID SLURRY.
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) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |