Patent US3769050A successfully refreshed from Google Patents.
US3769050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicate paints
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1971-02-12
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Granted: 1973-10-30
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Expires: 1991-02-12
Abstract
Abstract A thermal shock-resistant zinc oxide-pigmented silicate paint comprising zinc oxide pigment admixed with a silicate solution, preferably an aqueous alkali silicate solution, is rendered shock-resistant by heat-treating the zinc oxide powder generally obtained as ''''zinc white'''' when Zn fumes are condensed in air or O2 - prior to admixture of the powder with the silicate solution. The preferred heat treatment, in the range 600-900*C, produces pigment powder having a particle size distribution ranging from 0.1-1.0 microns up to 0.5-3.0 microns.
Inventors
- 👤 C Terry
- 👤 P Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:02
CPC Classifications
C; C09; C09D; C09D1/00; C09D1/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
20 words
A silicate paint as claimed in claim 1 wherein the silicate solution is an aqueous solution of an alkali silicate.
Claim 2
Dependent Claim
18 words
A silicate paint as claimed in claim 1 wherein the pigment powder has been heat-treated at approximately 800*C.
Claim 3
Dependent Claim
15 words
A silicate paint as claimed in claim 2 wherein the alkali silicate is potassium silicate.
Claim 4
Dependent Claim
18 words
A silicate paint as claimed in claim 4 wherein the pigment powder has been heat-treated at approximately 800*C.
Claim 5
Dependent Claim
17 words
A silicate paint as claimed in claim 1 wherein the pigment volume concentration is approximately 70 percent.
Claim 6
Dependent Claim
17 words
A silicate paint as claimed in claim 5 wherein the pigment volume concentration is approximately 70 percent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |