US4150995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitreous enamel composition containing palladium powder
Assignee: Okuno Chemical Industries Co Ltd
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Filing: 1977-11-23
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Granted: 1979-04-24
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Expires: 1997-11-23
Abstract
Abstract A vitreous enamel composition comprising 1 part by weight of a vitreous enamel solid component composed of (1) 90- 99.9 wt. % of glass powder consisting of 30 to 70 wt. % of SiO 2 , 1- 65 wt. % of PbO, and 1-- 15 wt. % of R 2 O in which R is K, Na or Li, and (2) 0.1-- 10 wt. % of palladium powder, and 1- 20 parts by weight of an organic vehicle.
Inventors
- 👤 Yukikazu Moritsu
- 👤 Kooji Yamada
- 👤 Masatoshi Wada
- 👤 Eiji Munemoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:24
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C03; C03C; C03C12/00; C03C8/00; C03C8/14; C03C8/18; C04B41/45; C04B41/50; C04B41/51; C04B41/5122; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C09; C09D; C09D5/00; C09D5/38; C03C2205/00; C03C2205/02; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; H05K3/00; H05K3/10; H05K3/18; H05K3/181
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
78 words
A vitreous enamel composition comprising 1 part by weight of a vitreous enamel solid component composed of (1) 90- 99.9 wt. % of glass powder consisting of 30 to 70 wt. % of SiO 2 , 1- 65 wt. % of Pb0, and 1- 15 wt. % of R 2 O in which R is K, Na or Li, and (2) 0.1- 10 wt. % of palladium powder, and 3- 20 parts by weight of an organic vehicle.
Claim 2
Dependent Claim
78 words
A vitreous enamel composition comprising 1 part by weight of a vitreous enamel solid component composed of (1) 90- 99.9 wt. % of glass powder consisting of 30 to 70 wt. % of SiO 2 , 1- 65 wt. % of Pb0, and 1- 15 wt. % of R 2 O in which R is K, Na or Li, and (2) 0.1- 10 wt. % of palladium powder, and 3- 20 parts by weight of an organic vehicle.
Claim 3
Dependent Claim
46 words
The vitreous enamel composition according to claim 1, in which said glass powder consists of 35- 65 wt. % of SiO 2 , 10- 60 wt. % of PbO, and 3- 15 wt. % of R 2 O in which R is K, Na or Li.
Claim 4
Dependent Claim
65 words
The vitreous enamel composition according to claim 1, in which said glass further contains at least one of B 2 O 3 , CaO, BaO, MgO, NaF, ZnO, TiO 2 , ZrO 2 , SnO 2 , Al 2 O 3 , Bi 2 O 3 and Fe 2 O 3 in an amount of up to 20 wt. % based on the glass powder.
Claim 5
Dependent Claim
71 words
The vitreous enamel composition according to claim 1, in which said vitreous enamel solid component one of composed of (1) 92- 99 wt. % of glass powder consisting of 30 to 70 wt. % of SiO 2 , 1- 65 wt. % of PbO, and 1- 15 wt. % of R 2 O in which R is K, Na or Li, and (2) 1 to 8 wt. % of palladium powder.
Claim 6
Dependent Claim
36 words
The vitreous enamel composition according to claim 1, in which said organic vehicle is contained in an amount of 3- 10 parts by weight based on 1 part by weight of the vitreous enamel solid component.
Claim 7
Dependent Claim
22 words
The vitreous enamel composition according to claim 1 which further contains at least one of substances not melting during firing the composition.
Claim 8
Dependent Claim
26 words
The vitreous enamel composition according to claim 6, in which said substance is at least of barium sulfate, calcium sulfate, kaolin, feldspar, siliceous sand and alumina.
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) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |