US2749330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrolyzed acrylonitrile-isobutylene copolymers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1952-12-06
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Granted: 1956-06-05
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Expires: 1972-12-06
Abstract
No abstract record available.
Inventors
- 👤 Fred W Banes
- 👤 John D Garber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:05
CPC Classifications
C; C08; C08F; C08F8/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A HYDROLYZED COPOLYMER OF ABOUT 62 TO 85% BY WEIGHT OF AN ACRYLIC-NITRILE MONOMER HAVING THE FORMULA CH2=CY-CN WHERE Y IS THE MEMBER OF THE GROUP CONSISTING OF HYDROGEN, METHYL, ETHYL, AND CHLORINE, AND CORRESPONDINGLY 38 TO 15% BY WEIGHT OF A COMPOUND HAVING 2 TO 8 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND CYCLIC OLEFINS AND CHLOR-SUBSTITUTED OLEFINS, SAID COPOLYMER HAVING AN INTRINSIC VISCOSITY BETWEEN 0.1 AND 1, AND WHEREIN SAID COPLYMER CONTAINS BETWEEN 5-80% OF THE THEORETICAL AMOUNT OF CARBOXYL GROUPS.
Claim 2
Dependent Claim
86 words
A HYDROLYZED COPOLYMER OF ABOUT 62 TO 85% BY WEIGHT OF AN ACRYLIC-NITRILE MONOMER HAVING THE FORMULA CH2=CY-CN WHERE Y IS THE MEMBER OF THE GROUP CONSISTING OF HYDROGEN, METHYL, ETHYL, AND CHLORINE, AND CORRESPONDINGLY 38 TO 15% BY WEIGHT OF A COMPOUND HAVING 2 TO 8 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND CYCLIC OLEFINS AND CHLOR-SUBSTITUTED OLEFINS, SAID COPOLYMER HAVING AN INTRINSIC VISCOSITY BETWEEN 0.1 AND 1, AND WHEREIN SAID COPLYMER CONTAINS BETWEEN 5-80% OF THE THEORETICAL AMOUNT OF CARBOXYL GROUPS.
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) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |