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US2500229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric 2, 2, 4-trimethyl-tetrahydro-quinoline as stabilizer for diene polymers
Assignee: Dow Chemical Co
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Filing: 1946-09-28
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Granted: 1950-03-14
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Expires: 1966-09-28
Abstract
No abstract record available.
Inventors
- 👤 James B Arnold
- 👤 Lester J Dankert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:12
CPC Classifications
C; C08; C08L; C08L21/00; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A SOLID POLYMER, DERIVED FROM AN ALIPHATIC CONJUGATED DIOLEFINE CONTAINING FROM 4 TO 6 CARBON ATOMS IN THE MOLECULE BY A POLYMERIZTION REACTION INVOLVING THE DIOLEFINE, WHICH POLYMER IS STABILIZED AGAINST AGING BY HAVING POLYMERIC 2,2,4-TRIMETHYL-TETRAHYDROQUINOLINE INCORPORATED THEREWITH.
Claim 2
Dependent Claim
38 words
A SOLID POLYMER, DERIVED FROM AN ALIPHATIC CONJUGATED DIOLEFINE CONTAINING FROM 4 TO 6 CARBON ATOMS IN THE MOLECULE BY A POLYMERIZTION REACTION INVOLVING THE DIOLEFINE, WHICH POLYMER IS STABILIZED AGAINST AGING BY HAVING POLYMERIC 2,2,4-TRIMETHYL-TETRAHYDROQUINOLINE INCORPORATED THEREWITH.
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) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |