US3056768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl chloride copolymers and methods of making the same
Assignee: Airco Inc
•
Filing: 1959-12-29
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Granted: 1962-10-02
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Expires: 1979-12-29
Abstract
No abstract record available.
Inventors
- 👤 Andrew J Foglia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:54
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/02; C08F214/04; C08F214/06; C08F18/00; C08F18/02; C08F18/04; Y; Y10; Y10S; Y10S526/00; Y10S526/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR PREPARING TRUE AND UNIFORM COPOLYMERS OF VINYL CHLORIDE AND A SUBSTANTIALLY NON-VOLATILE VINYL ESTER OF A MONOCARBOXYLIC ACID CONTAINING FROM ABOUT 12 TO 18 CARBON ATOMS WHICH COMPRISES INTRODUCING VINYL CHLORIDE VAPOR IN A REACTION ZONE CONTAINING SAID VINYL ESTER, MAINTAINING THE VAPOR PRESSURE OF VINYL CHLORIDE IN SAID REACTION ZONE AT A CONSTANT LEVEL WHICH IS LESS THAN THE SATURATION PRESSURE OF VINYL CHLORIDE IN SAID REACTION ZONE, AND RECOVERING A UNIFORM COPOLYMER OF VINYL CHLORIDE AND A VINYL ESTER OF A CARBOXYLIC ACID CONTAINING FROM ABOUT 12 TO 18 CARBON ATOMS.
Claim 2
Dependent Claim
96 words
A PROCESS FOR PREPARING TRUE AND UNIFORM COPOLYMERS OF VINYL CHLORIDE AND A SUBSTANTIALLY NON-VOLATILE VINYL ESTER OF A MONOCARBOXYLIC ACID CONTAINING FROM ABOUT 12 TO 18 CARBON ATOMS WHICH COMPRISES INTRODUCING VINYL CHLORIDE VAPOR IN A REACTION ZONE CONTAINING SAID VINYL ESTER, MAINTAINING THE VAPOR PRESSURE OF VINYL CHLORIDE IN SAID REACTION ZONE AT A CONSTANT LEVEL WHICH IS LESS THAN THE SATURATION PRESSURE OF VINYL CHLORIDE IN SAID REACTION ZONE, AND RECOVERING A UNIFORM COPOLYMER OF VINYL CHLORIDE AND A VINYL ESTER OF A CARBOXYLIC ACID CONTAINING FROM ABOUT 12 TO 18 CARBON ATOMS.
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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) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |