US2684341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha-chloroacrylic acid ester polymer foam
Assignee: GAF Chemicals Corp
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Filing: 1951-02-03
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Granted: 1954-07-20
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Expires: 1971-02-03
Abstract
No abstract record available.
Inventors
- 👤 Harry D Anspon
- 👤 Frank E Pschorr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:10
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/02; Y; Y10; Y10S; Y10S521/00; Y10S521/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR MAKING PLASTIC FOAM, WHICH COMPRISES HEATING A NORMALLY SOLID POLYMER OF AN A-CHLOROACRYLIC ACID ESTER OF A MONOHYDROXY HYDROCARBON OF 1 TO 6 CARBON ATOMS AT A DECOMPOSITION TEMPERATURE WITHIN THE RANGE OF 135* TO 225* C. UNTIL GAS BUBBLES ARE GENERATED WITHIN THE MASS, AND COOLING BELOW SAID TEMPERATURE RANGE BEFORE A SUBSTANTIAL PROPORTION OF THE BUBBLES MERGE WITHIN THE MASS OR ESCAPE FROM THE SURFACE THEREOF.
Claim 2
Dependent Claim
71 words
A PROCESS FOR MAKING PLASTIC FOAM, WHICH COMPRISES HEATING A NORMALLY SOLID POLYMER OF AN A-CHLOROACRYLIC ACID ESTER OF A MONOHYDROXY HYDROCARBON OF 1 TO 6 CARBON ATOMS AT A DECOMPOSITION TEMPERATURE WITHIN THE RANGE OF 135* TO 225* C. UNTIL GAS BUBBLES ARE GENERATED WITHIN THE MASS, AND COOLING BELOW SAID TEMPERATURE RANGE BEFORE A SUBSTANTIAL PROPORTION OF THE BUBBLES MERGE WITHIN THE MASS OR ESCAPE FROM THE SURFACE THEREOF.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |