Patent US3256231A successfully refreshed from Google Patents.
US3256231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric water and oil repellents
Assignee: EIDP Inc
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Filing: 1961-05-03
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Granted: 1966-06-14
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Expires: 1981-05-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Rulon Edward Johnson
- 👤 Raynolds Stuart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:21
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/34; C; C08; C08F; C08F28/00; C08L; C08L33/00; C08L33/04; C08L33/14; C08L33/16; C08L57/00; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A POLYMERIC PRODUCT COMPRISING (1) FROM ABOUT 3% TO ABOUT 25%, BY WEIGHT, OF A POLYMER PREPARED FROM AT LEAST ONE POLYMERIZABLE FLUORINE CONTAINING ALIPHATIC COMPOUND OF THE STRUCTURE CH2=CR1Q AND (2) FROM ABOUT 75% TO ABOUT 97%, BY WEIGHT, OF A POLYMER PREPARED FROM AT LEAST ONE POLYMERIZABLE VINYL COMPOUND CH2=CAB CHOSEN FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
58 words
A POLYMERIC PRODUCT COMPRISING (1) FROM ABOUT 3% TO ABOUT 25%, BY WEIGHT, OF A POLYMER PREPARED FROM AT LEAST ONE POLYMERIZABLE FLUORINE CONTAINING ALIPHATIC COMPOUND OF THE STRUCTURE CH2=CR1Q AND (2) FROM ABOUT 75% TO ABOUT 97%, BY WEIGHT, OF A POLYMER PREPARED FROM AT LEAST ONE POLYMERIZABLE VINYL COMPOUND CH2=CAB CHOSEN FROM THE GROUP CONSISTING OF
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |