US3523810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nongelling titania pigments
Assignee: Montedison SpA
•
Filing: 1966-12-20
•
Granted: 1970-08-11
•
Expires: 1986-12-20
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Swank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:30
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3653; C09C1/3661; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2284772A
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US2671031A
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US3035966A
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US3203818A
Cited
US3212911A
Cited
US3251705A
Cited
US3383231A
Cited
US3409454A
Cited
US3409501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |