US3261785A
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
- 👤 Anderson E Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:30
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-VINYLIDENE CHLORIDE COPOLYMERS, AND VINYL CHLORIDE-1,2-ETHYLENE DICARBOXYLIC ACID ALKYL ESTER COPOLYMERS WHICH COMPRISES HEATING SAID POLYMER IN THE PRESENCE OF AN ALIPHATIC POLYSULFONAZIDE HAVING THE GENERAL FORMULA
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-VINYLIDENE CHLORIDE COPOLYMERS, AND VINYL CHLORIDE-1,2-ETHYLENE DICARBOXYLIC ACID ALKYL ESTER COPOLYMERS WHICH COMPRISES HEATING SAID POLYMER IN THE PRESENCE OF AN ALIPHATIC POLYSULFONAZIDE HAVING THE GENERAL FORMULA
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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 |