US2701241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of polystyrene with 2, 4-dinitrophenylhydrazine
Assignee: Union Carbide Corp
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Filing: 1953-05-19
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Granted: 1955-02-01
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Expires: 1973-05-19
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Wood
- 👤 James R Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:12
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A COMPOSITION OF MATTER COMPRISING POLYSTYRENE AND FROM ABOUT 0.01 PERCENT TO ABOUT 15 PERCENT BY WEIGHT OF POLYSTYRENE OF 2,4-DINITROPHENYLHYDRAZINE.
Claim 2
Dependent Claim
21 words
A COMPOSITION OF MATTER COMPRISING POLYSTYRENE AND FROM ABOUT 0.01 PERCENT TO ABOUT 15 PERCENT BY WEIGHT OF POLYSTYRENE OF 2,4-DINITROPHENYLHYDRAZINE.
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) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |