Patent US3049512A successfully refreshed from Google Patents.
US3049512A
Expired / Lapsed
US
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Vinyloxyaryl sulphonic acids and polymers thereof
Assignee: Rhone Poulenc SA
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Filing: 1960-02-09
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Granted: 1962-08-14
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Expires: 1980-02-09
Abstract
No abstract record available.
Inventors
- 👤 Fournet Andre
- 👤 Lemoine Hubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:34
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08F220/46; C07; C07C; C07C309/00; C07C309/01; C07C309/28; C07C309/41; C07C309/42; C08F16/00; C08F16/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A VINYL DERIVATIVE OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
7 words
A VINYL DERIVATIVE OF THE GENERAL 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) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |