Patent US3663290A successfully refreshed from Google Patents.
US3663290A
Expired / Lapsed
US
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Temperature resistant coating and method
Assignee: Klinge Enameling Co Inc
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Filing: 1969-12-17
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Granted: 1972-05-16
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Expires: 1989-12-17
Abstract
Abstract A member is coated in three coating steps, including first and final coats of a clear solution of an alkali metal silicate, and an intermediate coat of an opaque solution of an alkali metal silicate, each coating followed by a high temperature cure. The concentration of silicate in solution is limited to avoid frosting and discoloration when subjected to heat. The clear solution includes clay and a binder for mar resistance and adhesion. The opaque solution includes a pigment and a binder.
Inventors
- 👤 James L Klinge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:23
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/5076; B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; C04B28/00; C04B28/24; C04B28/26; C04B41/009; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
18 words
The process of claim 1 wherein: each of said coatingS is applied by spraying in a crisscross pattern.
Claim 2
Dependent Claim
21 words
The process of claim 1 wherein: said first mentioned curing step is performed for a period in excess of 20 minutes.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein: said air drying step is performed for a period of at least 5 minutes.
Claim 4
Dependent Claim
21 words
The process of claim 1 wherein: said second mentioned curing step is performed for a period in excess of 20 minutes.
Claim 5
Dependent Claim
21 words
The process of claim 1 wherein: said third mentioned curing step is performed for a period in excess of 20 minutes.
Claim 6
Dependent Claim
36 words
The process of claim 1 wherein: said first, second, and third mentioned curing steps are performed at temperatures of 300* F for 30 minutes, 400* F for 30 minutes, and 500* F for 30 minutes, respectively.
Claim 7
Dependent Claim
67 words
A process of coating a member and comprising the steps of: applying to an exterior surface of said member one coating of a non-clear solution of an alkali metal silicate; air drying said coating; omitting said coating at spaced locations on said surface; curing said coating; applying to said surface a next coating of a clear solution of an alkali metal silicate; and curing said next coating.
Claim 8
Dependent Claim
42 words
The process of claim 8 wherein: omission of said one coating is achieved by removal thereof at said locations, said next coating is applied to said surface over said one coating and over said locations where said one coating has been removed.
Claim 9
Dependent Claim
54 words
The process of claim 8 wherein: the curing of said next coating is done first at a member temperature between 180* and 210* F for a period of between 5 minutes and 25 minutes, and then at a member temperature between 450* and 550* F for a period between 5 minutes and 25 minutes.
References Cited (Backward Citations)
US916516A
Cited
US1744116A
Cited
US1976157A
Cited
US2372285A
Cited
US2509875A
Cited
US2681865A
Cited
US2998328A
Cited
US3208874A
Cited
US3531311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |