US4518736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boron nitride paint for ceramic hot pressing
Assignee: Advanced Ceramic Systems Inc
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Filing: 1984-04-06
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Granted: 1985-05-21
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Expires: 2004-04-06
Abstract
Abstract A paint is formulated by combining fine boron nitride powder with a polymeric dispersion and a volatile liquid carrier, which paint is coated on ceramic preforms and subjected to hot pressing. The paint eliminates the formation of undesirable carbides on the surface of the pressed ceramic.
Inventors
- 👤 Paul F. Jahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:22
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/38; C09; C09D; C09D133/00; C09D133/04; C09D133/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
35 words
A paint for ceramic hot pressing comprising; boron nitride powder; an acrylic paint; and a volatizable liquid, having the following composition in parts by weight: boron nitride powder: 50-100 acrylic paint: 25-75 volatizable liquid: 100-200.
Claim 2
Dependent Claim
35 words
A paint for ceramic hot pressing comprising; boron nitride powder; an acrylic paint; and a volatizable liquid, having the following composition in parts by weight: boron nitride powder: 50-100 acrylic paint: 25-75 volatizable liquid: 100-200.
Claim 3
Dependent Claim
40 words
The paint of claim 1, wherein boron nitride is present in about 70 parts by weight; carbon black acrylic paint is present in about 50 parts by weight and the volatizable liquid is present in about 150 parts by weight.
Claim 4
Dependent Claim
11 words
The paint of claim 1, said acrylic being a vinyl acrylic.
Claim 5
Dependent Claim
10 words
The paint of claim 3, said liquid comprising an alcohol.
Claim 6
Dependent Claim
16 words
The paint of claim 4, said boron nitride being at least as fine as -200 mesh.
References Cited (Backward Citations)
US2152536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |