US5358910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous silicon carbide ceramics using filled polysiloxanes
Assignee: Dow Silicones Corp
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Filing: 1993-09-20
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Granted: 1994-10-25
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Expires: 2013-09-20
Abstract
Abstract The preparation of porous ceramic bodies by sintering certain curable organopolysiloxanes filled with silicon carbide powders. This process is advantageous in that the green bodies have relative high strengths and thus can be easily handled and, if desired, machined before sintering.
Inventors
- 👤 William H. Atwell
- 👤 Chandan K. Saha
- 👤 Gregg A. Zank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:20
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/0022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A porous body which was heated above 1600° C., comprising silicon carbide having a density less than 2.4 g/cm 3 , an open porosity greater than 25% and a 3 point bending strength greater than 25 Ksi.
Claim 2
Dependent Claim
37 words
A porous body which was heated above 1600° C., comprising silicon carbide having a density less than 2.4 g/cm 3 , an open porosity greater than 25% and a 3 point bending strength greater than 25 Ksi.
References Cited (Backward Citations)
US4891340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-24 | 1998-04-25 | 1998-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-24 | 2002-04-25 | 2002-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-24 | 2006-04-25 | 2006-10-25 | $7700.00 | Window Closed / Lapsed |