US3236818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terpolymers of vinylidene chloride, a mono-olefinic material and a terpene
Assignee: EIDP Inc
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Filing: 1961-06-12
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Granted: 1966-02-22
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Expires: 1981-06-12
Abstract
No abstract record available.
Inventors
- 👤 Covington Edward Royals
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:58
CPC Classifications
C; C08; C08F; C08F22/00; C08F214/00; C08F214/02; C08F214/04; C08F214/08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/052; C08J2427/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
IN THE PROCESS OF PREPARING A VINYLDENE CHLORIDE COPOLYMER BY POLYMERIZING IN AN AQUEOUS EMULSION SYSTEM, UNTIL SUBSTANTIALLY COMPLETE CONVERSION OF ALL POLYMERIZABLE MONOMERS PRESENT HAS TAKEN PLACE TO SAID COPOLYMER, 80-97% BY WEIGHT, OF VINYLIDENE CHLORIDE WITH, CORRESPONDINGLY, 3-20%, BY WEIGHT, OF OTHER MONOOLEFINIC MATERIAL COPOLYMERIZABLE WITH VINYLIDENE CHLORIDE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
54 words
IN THE PROCESS OF PREPARING A VINYLDENE CHLORIDE COPOLYMER BY POLYMERIZING IN AN AQUEOUS EMULSION SYSTEM, UNTIL SUBSTANTIALLY COMPLETE CONVERSION OF ALL POLYMERIZABLE MONOMERS PRESENT HAS TAKEN PLACE TO SAID COPOLYMER, 80-97% BY WEIGHT, OF VINYLIDENE CHLORIDE WITH, CORRESPONDINGLY, 3-20%, BY WEIGHT, OF OTHER MONOOLEFINIC MATERIAL COPOLYMERIZABLE WITH VINYLIDENE CHLORIDE HAVING THE GENERAL FORMULA
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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |