US3451835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Readily dispersible inorganic pigments
Assignee: Bayer AG
•
Filing: 1967-06-28
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Granted: 1969-06-24
•
Expires: 1987-06-28
Abstract
No abstract record available.
Inventors
- 👤 Karl-Werner Ganter
- 👤 Joachim Nentwig
- 👤 Hans Zirngibl
- 👤 Hans-Joachim Kappey
- 👤 Horst Bornefeld
- 👤 Walter Deissmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:08
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/006; C09C3/04; C09C3/041; C09C3/08; G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/7013; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2907670A
Cited
GB896067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-23 | 1972-12-23 | 1973-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-23 | 1976-12-23 | 1977-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-23 | 1980-12-23 | 1981-06-24 | $7700.00 | Window Closed / Lapsed |