US3497373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photochemically stable rutile pigments having high brightness and method for producing same
Assignee: Titan GmbH
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Filing: 1966-03-31
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Granted: 1970-02-24
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Expires: 1986-03-31
Abstract
No abstract record available.
Inventors
- 👤 Gerhard Rieck
- 👤 Helmut Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:56
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/63; D21H17/67; D21H17/69; C; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3653; C09C1/3661; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84; C01P2004/88
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2671031A
Cited
US3035966A
Cited
US3203818A
Cited
US3316204A
Cited
US3251705A
Cited
US3409501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |