Patent CH268318A successfully refreshed from Google Patents.
US2516162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric materials
Assignee: EIDP Inc
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Filing: 1947-10-07
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Granted: 1950-07-25
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Expires: 1967-10-07
Abstract
No abstract record available.
Inventors
- 👤 Tullock Charles William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:17
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J2377/00; C08J2377/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A COMPOSITION OF MATTER COMPRISING A HALOGENATED HYDROCARBON AND A COPOLYAMIDE OBTAINED BY THE CONDENSATION POLYMERIZATION, WITH CARBON DIOXIDE EVOLUTION, OF A MIXTURE OF AT LEAST TWO N-CARBOANHYDRIDES OF ALPHA AMINO ACIDS CONTAINING AT MOST ONE HYDROGEN ON THE ALPHA CARBON IN WHICH COMPOSITION OF MATTER THE HALOGENATED HYDROCARBON WHEN BOILING BELOW 250*C. CONSTITUTES FROM 83% TO 99.7%, BY WEIGHT, OF THE COMPOSITION AND WHEN BOILING ABOVE 250*C. CONSTITUTES FROM 1% TO 50%, BY WEIGHT, OF THE COMPOSITION.
Claim 2
Dependent Claim
78 words
A COMPOSITION OF MATTER COMPRISING A HALOGENATED HYDROCARBON AND A COPOLYAMIDE OBTAINED BY THE CONDENSATION POLYMERIZATION, WITH CARBON DIOXIDE EVOLUTION, OF A MIXTURE OF AT LEAST TWO N-CARBOANHYDRIDES OF ALPHA AMINO ACIDS CONTAINING AT MOST ONE HYDROGEN ON THE ALPHA CARBON IN WHICH COMPOSITION OF MATTER THE HALOGENATED HYDROCARBON WHEN BOILING BELOW 250*C. CONSTITUTES FROM 83% TO 99.7%, BY WEIGHT, OF THE COMPOSITION AND WHEN BOILING ABOVE 250*C. CONSTITUTES FROM 1% TO 50%, BY WEIGHT, OF THE COMPOSITION.
References Cited (Backward Citations)
US2149273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-24 | 1954-01-23 | 1954-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-24 | 1958-01-23 | 1958-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-24 | 1962-01-23 | 1962-07-25 | $7700.00 | Window Closed / Lapsed |