US4737332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing the dispersion medium from a molded pulverulent material
Assignee: JFE Engineering Corp
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Filing: 1986-05-13
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Granted: 1988-04-12
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Expires: 2006-05-13
Abstract
Abstract A method for eliminating a dispersion medium from a molded product obtained by plasticizing-molding or casting-molding one or more of metallic and ceramic powders, wherein the elimination process is carried out in a supercritical liquid carbon dioxide atmosphere without heating to higher temperatures.
Inventors
- 👤 Tsuneo Miyashita
- 👤 Yasushi Ueno
- 👤 Hiroaki Nishio
- 👤 Shoji Kubodera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:06
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/63; C04B35/638; B; B22; B22F; B22F3/00; B22F3/10; B22F3/1017; B22F3/1021; B22F3/1025; B22F2201/00; B22F2201/04; B22F2202/00; B22F2202/03
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
66 words
A method for molding a pulverulent material comprising the steps of molding a mixture by plasticizing-molding or casting-molding to form a molded product, said mixture comprising metallic or ceramic powders and a binder which includes a dispersion medium, and eliminating said dispersion medium from said molded product without heating to a higher temperature by elution of said dispersion medium in a supercritical liquid carbon dioxide atmosphere.
Claim 2
Independent Claim
66 words
A method for molding a pulverulent material comprising the steps of molding a mixture by plasticizing-molding or casting-molding to form a molded product, said mixture comprising metallic or ceramic powders and a binder which includes a dispersion medium, and eliminating said dispersion medium from said molded product without heating to a higher temperature by elution of said dispersion medium in a supercritical liquid carbon dioxide atmosphere.
Claim 3
Dependent Claim
25 words
A method according to claim 1 wherein the totality or an essential portion of the dispersion medium is composed of lower aliphatic alcohols or acetone.
References Cited (Backward Citations)
US4197118A
Cited
US4069060A
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US4248814A
Cited
US4518398A
Cited
US4404166A
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US4597790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-12 | 1991-10-12 | 1992-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-12 | 1995-10-12 | 1996-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-12 | 1999-10-12 | 2000-04-12 | $7700.00 | Window Closed / Lapsed |