Patent US1875862A successfully refreshed from Google Patents.
Patent US3099631A successfully refreshed from Google Patents.
US3099631A
Expired / Lapsed
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Nitrogenous condensation polymer containing grafted acid
Assignee: EIDP Inc
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Filing: 1958-03-06
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Granted: 1963-07-30
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Expires: 1978-03-06
Abstract
No abstract record available.
Inventors
- 👤 Tanner David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:15
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/04; C08G; C08G69/00; C08G69/48; D; D06; D06M; D06M14/00; D06M14/08; D06M14/12; D06M14/16; D06M14/18; D06M14/26; D06M14/30; Y; Y10; Y10S; Y10S8/00; Y10S8/18; Y10S8/21
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
26 words
A GRAFT COPOLYMER SUBSTANTIALLY INSOLUBLE IN WATER FROM THE CLASS CONSISTING OF (A) A SYNTHETIC HIGH MOLECULAR WEIGHT SUBSTANTIALLY LINEAR NITROGENOUS CONDENSATION POLYMER CHARACTERIZED BY RECURRING
Claim 2
Dependent Claim
26 words
A GRAFT COPOLYMER SUBSTANTIALLY INSOLUBLE IN WATER FROM THE CLASS CONSISTING OF (A) A SYNTHETIC HIGH MOLECULAR WEIGHT SUBSTANTIALLY LINEAR NITROGENOUS CONDENSATION POLYMER CHARACTERIZED BY RECURRING
Claim 3
Dependent Claim
9 words
A FOAM OF THE GRAFT COPOLYMER OF CLAIM 18.
References Cited (Backward Citations)
GB679562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |