US3627554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Readily dispersible inorganic pigments
Assignee: Bayer AG
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Filing: 1969-07-09
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Granted: 1971-12-14
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Expires: 1989-07-09
Abstract
Abstract THE DISPERSIBILITY OF INORGANIC PIGMENTS IN, FOR EXAMPLE, RESINS, E.G. POLYVINY CHLORIDE, IS IMPROVED BY COATING THE PIGMENT PARTICLES WITH AN ETHER OF A POLYOL WITH A LEAST 3 OH-GROUPS AND A MONOFUNCTIONAL ALCOHOL.
Inventors
- 👤 August Bockmann
- 👤 Klaus Prater
- 👤 Hans Rudolph
- 👤 Wolfgang Wiegreffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:30
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/006; C09C1/00; C09C1/22; C09C1/24; C09C1/34; C09C1/346; C09C1/36; C09C1/3692; C09C3/04; C09C3/041; C09C3/06; C09C3/063; C09C3/08; C01; C01P; C01P2006/00; C01P2006/20
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |