US3432453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
De-ionizing treatment for phenolic resins using a soluble ammonium salt
Assignee: Owens Corning Canada Inc
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Filing: 1964-12-02
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Granted: 1969-03-11
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Expires: 1984-12-02
Abstract
No abstract record available.
Inventors
- 👤 Kurt Paul Gladney
- 👤 Hendrik Herman Jan Deuzeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:11
CPC Classifications
C; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08G8/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2288533A
Cited
US3067172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |