US3261786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified vinyl chloride polymers
Assignee: Hercules LLC
•
Filing: 1963-06-25
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Granted: 1966-07-19
•
Expires: 1983-06-25
Abstract
No abstract record available.
Inventors
- 👤 David S Breslow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:42
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/34; C08F2800/00; C08F2800/20; C08F2810/00; C08F2810/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A PROCESS OF MODIFYING A VINYL CHLORIDE POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE, VINYL CHLORIDE-ACRYLONITRILE COPOLYMERS, VINYL CHLORIDEVINYL ACETATE COPOLYMERS, VINYL CHLORIDE-VINYL ACETAL COPOLYMERS, VINYL CHLORIDE-VINYLIDENE CHLORIDE COPOLYMERS, AND VINYL CHLORIDE-1,2-ETHYLENE DICARBOXYLIC ACID ALKYL ESTER COPOLYMERS WHICH COMPRISES HEATING SAID POLYMER IN THE PRESENCE OF AN AROMATIC POLYSULFONAZIDE.
Claim 2
Dependent Claim
51 words
A PROCESS OF MODIFYING A VINYL CHLORIDE POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYVINYL CHLORIDE, VINYL CHLORIDE-ACRYLONITRILE COPOLYMERS, VINYL CHLORIDEVINYL ACETATE COPOLYMERS, VINYL CHLORIDE-VINYL ACETAL COPOLYMERS, VINYL CHLORIDE-VINYLIDENE CHLORIDE COPOLYMERS, AND VINYL CHLORIDE-1,2-ETHYLENE DICARBOXYLIC ACID ALKYL ESTER COPOLYMERS WHICH COMPRISES HEATING SAID POLYMER IN THE PRESENCE OF AN AROMATIC POLYSULFONAZIDE.
References Cited (Backward Citations)
US2678293A
Cited
US2518249A
Cited
US2532243A
Cited
US2668152A
Cited
US2825282A
Cited
US2830029A
Cited
US3058944A
Cited
US3137745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |