US3088931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitrogen containing polar monomer grafted on an isobutylene-monovinylether copolymer backbone
Assignee: Wyeth Holdings LLC
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Filing: 1958-10-27
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Granted: 1963-05-07
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Expires: 1978-10-27
Abstract
No abstract record available.
Inventors
- 👤 Clyde S Scanley
- 👤 Frederick H Siegele
- 👤 Richard L Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:14
CPC Classifications
C; C08; C08F; C08F255/00; C08F255/08; C08F255/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A GRAFT POLYMER HAVING VISCOSITY INDEX IMPROVING PROPERTIES AND DETERGENT PROPERTIES CONSISTING OF A COPOLYMER OF ISOBUTYLENE WITH FROM 0.2% TO 20% OF A MONOVINYL ETHER MONOMER HAVING AN ACTIVE HYDROGEN CAPABLE OF TRANSFORMATION INTO AN OXIDIZED SITE SAID PERCENTAGE OF THE MONOVINYL MONOMER BEING BASED ON ISOBUTYLENE, SAID POLYMER HAVING GRAFTED THEREON FROM 0.05% TO 15% OF AN UNSATURATED, POLAR, NITROGEN-CONTAINING MONOMER BASED ON THE WEIGHT OF THE SAID POLYMER AND HAVING A DETERGENT POWER SUCH THAT LESS THAN 0.15% BY WEIGHT OF THE POLYMER IN AN 0.08% BY WEIGHT CARBON BLACK SUSPENSION IN KEROSENE WHICH IS THEN CENTRIFUGED IMPARTS 10% TRANSMISSION OF VISIBLE LIGHT.
Claim 2
Dependent Claim
106 words
A GRAFT POLYMER HAVING VISCOSITY INDEX IMPROVING PROPERTIES AND DETERGENT PROPERTIES CONSISTING OF A COPOLYMER OF ISOBUTYLENE WITH FROM 0.2% TO 20% OF A MONOVINYL ETHER MONOMER HAVING AN ACTIVE HYDROGEN CAPABLE OF TRANSFORMATION INTO AN OXIDIZED SITE SAID PERCENTAGE OF THE MONOVINYL MONOMER BEING BASED ON ISOBUTYLENE, SAID POLYMER HAVING GRAFTED THEREON FROM 0.05% TO 15% OF AN UNSATURATED, POLAR, NITROGEN-CONTAINING MONOMER BASED ON THE WEIGHT OF THE SAID POLYMER AND HAVING A DETERGENT POWER SUCH THAT LESS THAN 0.15% BY WEIGHT OF THE POLYMER IN AN 0.08% BY WEIGHT CARBON BLACK SUSPENSION IN KEROSENE WHICH IS THEN CENTRIFUGED IMPARTS 10% TRANSMISSION OF VISIBLE LIGHT.
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |