US3880802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant vinyl chloride polymers containing zinc zirconate
Assignee: Goodrich Corp
•
Filing: 1974-08-01
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Granted: 1975-04-29
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Expires: 1994-08-01
Abstract
Abstract Vinyl chloride polymers are compounded with zinc zirconate to provide improved flame resistance and reduce smoke production.
Inventors
- 👤 Jr Elmer D Dickens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:54
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
30 words
A COMPOSITION COMPRISING A VINYL CHLORIDE POLYMER AND ZINC ZIRCONATE IN AN AMOUNT OF FROM ABOUT 0.01 TO ABOUT 10 WEIGHT PARTS PER 100 WEIGHT PARTS OF VINYL CHLORIDE POLYMER.
Claim 2
Dependent Claim
30 words
A COMPOSITION COMPRISING A VINYL CHLORIDE POLYMER AND ZINC ZIRCONATE IN AN AMOUNT OF FROM ABOUT 0.01 TO ABOUT 10 WEIGHT PARTS PER 100 WEIGHT PARTS OF VINYL CHLORIDE POLYMER.
Claim 3
Dependent Claim
13 words
A composition of claim 1 wherein the vinyl chloride polymer is poly(vinyl chloride).
Claim 4
Dependent Claim
29 words
A composition of claim 1 wherein the vinyl chloride polymer contains up to about 50 percent by weight of at least one vinylidene compound copolymerized therewith having a terminal
Claim 5
Dependent Claim
15 words
A composition of claim 2 wherein there is 0.75 to 3 parts of zinc zirconate.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |