US3364170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of polymers with phenothiazines
Assignee: Wyeth Holdings LLC
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Filing: 1964-08-03
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Granted: 1968-01-16
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Expires: 1984-08-03
Abstract
No abstract record available.
Inventors
- 👤 Savides Christos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:00
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/45; C08K5/46
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
35 words
A COMPOSITON COMPRISING A RIGID COPOLYMER OF ACRYLONITRILE, BUTADIENE, AND STYRENE STABILIZED AGAINST THE DETERIORATING ACTION OF HEAT AND AIR BY THE PRESENCE OF BETWEEN 0.1% AND 5.0% OF A PHENOTHIAZINE COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
35 words
A COMPOSITON COMPRISING A RIGID COPOLYMER OF ACRYLONITRILE, BUTADIENE, AND STYRENE STABILIZED AGAINST THE DETERIORATING ACTION OF HEAT AND AIR BY THE PRESENCE OF BETWEEN 0.1% AND 5.0% OF A PHENOTHIAZINE COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
35 words
A COMPOSITION COMPRISING A RIGID COPOLYMER OF ACRYLONITRILE, BUTADIENE, AND STYRENE STABILIZED AGAINST THE DETERIORATING ACTION OF HEAT AND AIR BY THE PRESENCE OF BETWEEN 0.1% AND 5.0% OF A PHENOTHIAZINE COMPOUND OF THE FORMULA:
Claim 4
Dependent Claim
35 words
A COMPOSITION COMPRISING A RIGID COPOLYMER OF ACRYLONITRILE, BUTADIENE, AND STYRENE STABILIZED AGAINST THE DETERIORATING ACTION OF HEAT AND AIR BY THE PRESENCE OF BETWEEN 0.1% AND 5.0% OF A PHENOTHIAZINE COMPOUND OF THE FORMULA:
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) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |