Patent US3347832A successfully refreshed from Google Patents.
US3347832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationic hydroxy-containing terpolymers, preparation and use
Assignee: Shell USA Inc
•
Filing: 1964-10-29
•
Granted: 1967-10-17
•
Expires: 1984-10-29
Abstract
No abstract record available.
Inventors
- 👤 Alan R Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:46
CPC Classifications
C; C08; C08F; C08F16/00; C08F16/36; C08F20/00; C08F20/02; C08F20/10; C08F20/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A CATIONIC HYDROXY-CONTAINING TERPOLYMER OF (1) 1% TO 50% BY WEIGHT OF AN ESTER OF AN ALKENOIC ACID CONTAINING FROM 3 TO 6 CARBON ATOMS AND GLYCIDYL TRIALKYLAMMONIUM SALT WHEREIN EACH ALKYL GROUP CONTAINS FROM 1 TO 20 CARBON ATOMS, (2) 3% TO 45% BY WEIGHT OF AN ETHYLENICALLY UNSATURATED MONOMER OF THE GROUP CONSISTING OF ACROLEIN AND METHYL VINYL KETONE, AND (3) 1% TO 45% BY WEIGHT OF A DISSIMILAR ETHYLENICALLY UNSATURATED MONOMER, THE TOTAL AMOUNT OF MONOMER MAKING UP 100% BY WEIGHT AND SAID TERPOLYMER HAVING AN INTRINSIC VISCOSITY BETWEEN 0.5 DL./G.
Claim 2
Dependent Claim
94 words
A CATIONIC HYDROXY-CONTAINING TERPOLYMER OF (1) 1% TO 50% BY WEIGHT OF AN ESTER OF AN ALKENOIC ACID CONTAINING FROM 3 TO 6 CARBON ATOMS AND GLYCIDYL TRIALKYLAMMONIUM SALT WHEREIN EACH ALKYL GROUP CONTAINS FROM 1 TO 20 CARBON ATOMS, (2) 3% TO 45% BY WEIGHT OF AN ETHYLENICALLY UNSATURATED MONOMER OF THE GROUP CONSISTING OF ACROLEIN AND METHYL VINYL KETONE, AND (3) 1% TO 45% BY WEIGHT OF A DISSIMILAR ETHYLENICALLY UNSATURATED MONOMER, THE TOTAL AMOUNT OF MONOMER MAKING UP 100% BY WEIGHT AND SAID TERPOLYMER HAVING AN INTRINSIC VISCOSITY BETWEEN 0.5 DL./G.
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |