US3471443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing phenol-aldehyde novolak resins employing aniline or aniline hcl
Assignee: GP Chemicals Equity LLC
•
Filing: 1968-04-22
•
Granted: 1969-10-07
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Expires: 1988-04-22
Abstract
No abstract record available.
Inventors
- 👤 Leopold F Bornstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:44
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1111285A
Cited
GB191203498A
Cited
US1283706A
Cited
US1868079A
Cited
US2495175A
Cited
US2934511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |