Patent US3510334A successfully refreshed from Google Patents.
US3510334A
Expired / Lapsed
US
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Process of treating pigmentary titanium dioxide
Assignee: PPG Industries Inc
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Filing: 1967-12-20
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Granted: 1970-05-05
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Expires: 1987-12-20
Abstract
No abstract record available.
Inventors
- 👤 Neil C Goodspeed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:37
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/40; B; B82; B82Y; B82Y30/00; C09C1/36; C09C1/3692; C09C3/00; C09C3/06; C09C3/063; C09C3/08; C09C3/12; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/62; C01P2004/64; C01P2004/80; C01P2004/82; C01P2004/84; C01P2006/00; C01P2006/19; C01P2006/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2284772A
Cited
US2628919A
Cited
US2671031A
Cited
US3146119A
Cited
US3251705A
Cited
US3220867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |