US3876441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic pigments
Assignee: Evonik Operations GmbH
•
Filing: 1974-05-03
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Granted: 1975-04-08
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Expires: 1994-05-03
Abstract
Abstract Inorganic blue-green pigments are prepared having the composition of Me.sub.2 (Co.sub.x Zn.sub.y Cd.sub.z)Ti.sub.3 O.sub.8 where Me is an alkali metal and x + y +z is 1. The pigments are useful for coloring plastics.
Inventors
- 👤 Arno Broll
- 👤 Herbert Mann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:20
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C01; C01P; C01P2002/00; C01P2002/30; C01P2002/32; C01P2002/70
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
6 words
AN INORGANIC PIGMENT HAVING THE COMPOSITION
Claim 2
Dependent Claim
6 words
AN INORGANIC PIGMENT HAVING THE COMPOSITION
Claim 3
Dependent Claim
17 words
A pigment according to claim 1 where Me is Li, Na or K and Sn is 0.
Claim 4
Dependent Claim
10 words
A pigment according to claim 2 wherein Me is Li.
Claim 5
Dependent Claim
12 words
A pigment according to claim 3, wherein x is 0.4 to 0.8.
Claim 6
Dependent Claim
30 words
A pigment according to claim 3 having the formula Li.sub. 2 (Co.sub.x Zn.sub.y)Ti.sub. 3 O.sub. 8, x + y is 1 and both x and y are greater than 0.
Claim 7
Dependent Claim
12 words
A pigment according to claim 5 wherein x is 0.4 to 0.8.
Claim 8
Dependent Claim
17 words
A pigment according to claim 5 wherein the molar ratio of Co:Zn is from 0.5:1 to 4:1.
Claim 9
Dependent Claim
31 words
A pigment according to claim 3 having the formula Li.sub. 2 (Co.sub.x Cd.sub. 2)Ti.sub. 3 O.sub. 8, x + z is 1 and both x and z are greater than 0.
Claim 10
Dependent Claim
12 words
A pigment according to claim 8 where x is 0.4 to 0.8.
Claim 11
Dependent Claim
13 words
A pigment according to claim 1 having the formula Me2CoTi.sub. 3 O.sub. 8.
Claim 12
Dependent Claim
15 words
A pigment according to claim 1 having the formula Me.sub. 2 CdTi.sub. 3 O.sub. 8.
Claim 13
Dependent Claim
13 words
A pigment according to claim 1 having the formula Me2ZnTi.sub. 3 O.sub. 8.
References Cited (Backward Citations)
US3413083A
Cited
US3424551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |