Patent US2090522A successfully refreshed from Google Patents.
US3524835A
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Heat treatment of poly(arylene sulfide) resins
Assignee: Phillips Petroleum Co
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Filing: 1967-09-11
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Granted: 1970-08-18
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Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 James T Edmonds Jr
- 👤 Harold Wayne Hill Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:49
CPC Classifications
C; C07; C07C; C07C321/00; C08; C08G; C08G75/00; C08G75/02; C08G75/0204; C08G75/0209; C08G75/0213; C08G75/0227; C08G75/0231; C08G75/0236; C08G75/025; C08G75/0254; C08G75/0277; C08G75/0286; C08G75/0295; C08G75/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2986582A
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US3268504A
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US3317487A
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US3324087A
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US3326865A
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US3303170A
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US3354129A
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US3274165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |