Patent US5199986A successfully refreshed from Google Patents.
US5199986A
Expired / Lapsed
US
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Process for coloring building materials
Assignee: Bayer AG
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Filing: 1992-01-27
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Granted: 1993-04-06
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Expires: 2012-01-27
Abstract
Abstract Colored building materials are produced by incorporating into the building materials inorganic pigments in the form of granulates which are free-flowing and not dust forming wherein the pigments are produced from spray dried granulates by after-granulating.
Inventors
- 👤 Bernd Krockert
- 👤 Gunter Linde
- 👤 Manfred Eitel
- 👤 Kurt Schafer
- 👤 Klaus Rohbock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:13
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/04; C09C3/045; C04; C04B; C04B18/00; C04B18/02; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
40 words
A process for coloring building materials with inorganic pigments which comprises incorporating into said materials pigments in the form of granulates which are free-flowing and no dust forming wherein the pigment granulates are produced from spray dried granules by after-granulating.
Claim 2
Dependent Claim
40 words
A process for coloring building materials with inorganic pigments which comprises incorporating into said materials pigments in the form of granulates which are free-flowing and no dust forming wherein the pigment granulates are produced from spray dried granules by after-granulating.
Claim 3
Dependent Claim
22 words
A process according to claim 1 wherein the after-granulation is carried out for a period of from 5 minutes to 10 hours.
Claim 4
Dependent Claim
21 words
A process according to claim 1 wherein the after-granulation is carried out at a temperature from ambient temperature to 300° C.
Claim 5
Dependent Claim
18 words
A process according to claim 1 wherein the after-granulation is carried out in drums, screws or rotary plates.
Claim 6
Dependent Claim
15 words
A process according to claim 1 wherein the after-granulation is carried out without any additive.
Claim 7
Dependent Claim
27 words
A process according to claim 1 wherein during after-granulation the granules are sprayed with 0.5 to 5% by weight of water, based on the quantity of pigments.
Claim 8
Dependent Claim
40 words
A process according to claim 1 wherein during after-granulation the granules are sprayed with 0.5 to 5% by weight of aqueous solutions of salts of boron, aluminum, silicon, titanium, zinc, tin or mixtures thereof, based on the quantity of pigments.
Claim 9
Dependent Claim
25 words
A process according to claim 1 wherein the inorganic pigments are at least one titanium dioxide, iron oxide, chromium oxide, manganese oxide or zinc oxide.
Claim 10
Dependent Claim
14 words
A process according to claim 8 wherein the inorganic pigments are iron oxide pigments.
Claim 11
Dependent Claim
46 words
A process according to claim 1 wherein the inorganic pigments are mixed phase pigments containing at least two metal cations selected from the metal group consisting of chromium, manganese, iron, cobalt, nickel, zinc, titanium, copper, aluminum, arsenic and antimony, together with the oxygen as the anion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-05 | 1996-10-05 | 1997-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-05 | 2000-10-05 | 2001-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-05 | 2004-10-05 | 2005-04-06 | $7700.00 | Window Closed / Lapsed |