Patent US3133830A successfully refreshed from Google Patents.
US3133830A
Expired / Lapsed
US
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Process of flameproofing foamed polystyrene
Assignee: Hoechst AG
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Filing: 1960-09-22
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Granted: 1964-05-19
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Expires: 1980-09-22
Abstract
No abstract record available.
Inventors
- 👤 Jochinke Hellmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:17
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/36; C08J9/365; C08J2325/00; C08J2325/02; C08J2325/04; C08J2325/06; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10S521/00; Y10S521/907; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR THE MANUFACTURE OF FLAMEPROOF SHAPED PRODUCTS OF FOAMED POLYSTYRENE WHICH COMPRISES COATING SHAPED PRODUCTS OF FOAMED POLYSTYRENE WITH AN AQUEOUS EMULSION CONTAINING AS ESSENTIAL INGREDIENTS A NON-CRYSTALLINE CHLORINATED HYDROCARBON OF AT LEAST 5 CARBON ATOMS AND A CHLORINE CONTENT OF AT LEAST 40% BY WEIGHT, AND ANTIMONY TRIOXIDE, THE RATIO BY WEIGHT BETWEEN THE CHLORINATED HYDROCARBON AND THE TRIOXIDE BEING BETWEEN 1:1 AND 3:1.
Claim 2
Dependent Claim
67 words
A PROCESS FOR THE MANUFACTURE OF FLAMEPROOF SHAPED PRODUCTS OF FOAMED POLYSTYRENE WHICH COMPRISES COATING SHAPED PRODUCTS OF FOAMED POLYSTYRENE WITH AN AQUEOUS EMULSION CONTAINING AS ESSENTIAL INGREDIENTS A NON-CRYSTALLINE CHLORINATED HYDROCARBON OF AT LEAST 5 CARBON ATOMS AND A CHLORINE CONTENT OF AT LEAST 40% BY WEIGHT, AND ANTIMONY TRIOXIDE, THE RATIO BY WEIGHT BETWEEN THE CHLORINATED HYDROCARBON AND THE TRIOXIDE BEING BETWEEN 1:1 AND 3:1.
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |