US3424819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formaldehyde polymers stabilized with tris(dialkylhydroxybenzyl)benzenes
Assignee: Tenneco Polymers Inc
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Filing: 1965-08-26
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Granted: 1969-01-28
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Expires: 1985-08-26
Abstract
No abstract record available.
Inventors
- 👤 Richard Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:27
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/16; C08K5/34; C08L; C08L59/00; C08L59/02; C08L77/00; C08L77/02; C08L77/06
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) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |