US3436239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carboxylic acid ester treated pigments
Assignee: Laporte Titanium Ltd
•
Filing: 1965-06-30
•
Granted: 1969-04-01
•
Expires: 1985-06-30
Abstract
No abstract record available.
Inventors
- 👤 Raoul Feld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:55
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/08; C09C1/00; C09C1/36; C09C1/3607; C09C1/3669; C01; C01P; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |