US3278501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing polymers of acrylamide with ethylenically unsaturated sulfines
Assignee: Union Carbide Corp
•
Filing: 1961-08-10
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Granted: 1966-10-11
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Expires: 1981-08-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick E Bailey
- 👤 Combe Edward M La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:34
CPC Classifications
C; C07; C07C; C07C381/00; C07C381/12; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/56; C08F28/00; C08F8/00; C08L; C08L33/00; C08L33/18; C08L33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A PROCESS FOR THE PRODUCTION OF A SOLID, GRANULAR HIGH-MOLECULAR WEIGHT COPOLYMER OF ACRYLAMIDE AND AN ALPHA-ETHYLENICALLY UNSATURATED SULFINE OF THE GENERAL FORMULA
Claim 2
Dependent Claim
23 words
A PROCESS FOR THE PRODUCTION OF A SOLID, GRANULAR HIGH-MOLECULAR WEIGHT COPOLYMER OF ACRYLAMIDE AND AN ALPHA-ETHYLENICALLY UNSATURATED SULFINE OF THE GENERAL FORMULA
References Cited (Backward Citations)
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US2874131A
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US2925406A
Cited
US2957821A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |