Patent US3437481A successfully refreshed from Google Patents.
US3437481A
Expired / Lapsed
US
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Resin compositions
Assignee: Ashland LLC
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Filing: 1965-02-15
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Granted: 1969-04-08
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Expires: 1985-02-15
Abstract
No abstract record available.
Inventors
- 👤 Richard B Graver
- 👤 Walter A Wallman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:06
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0528; G03G5/0592; C; C08; C08L; C08L67/00; C08L67/08; C09; C09D; C09D167/00; C09D167/08; G03G5/0557; G03G5/056
Claims Analysis
Total Claims: 0
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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) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |