US3097930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a porous shape of sintered refractory material
Assignee: Consolidated Beryllium Ltd
•
Filing: 1961-03-07
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Granted: 1963-07-16
•
Expires: 1981-03-07
Abstract
No abstract record available.
Inventors
- 👤 Holland Ivor James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:46
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/06; C04B38/0615; Y; Y10; Y10S; Y10S264/00; Y10S264/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A METHOD OF MAKING A POROUS SHAPE OF SINTERED REFRACTORY MATERIAL WHICH COMPRISES IMPREGNATING A FOAMED PLASTIC SPONGE SHAPE OF THE INTERCOMMUNICATING CELL, TYPE WITH A SUSPENSION OF REFRACTORY PARTICLES IN A LIQUID, DRYING THE IMPREGNATED SHAPE TO REMOVE THE LIQUID, AND FIRING THE DRIED SHAPE IN AN INERT ATMOSHPERE VOLATILIZE THE MATERIAL OF THE SPONGE AND TO SINTER THE REFRACTORY PARTICLES TOGETHER.
Claim 2
Independent Claim
63 words
A METHOD OF MAKING A POROUS SHAPE OF SINTERED REFRACTORY MATERIAL WHICH COMPRISES IMPREGNATING A FOAMED PLASTIC SPONGE SHAPE OF THE INTERCOMMUNICATING CELL, TYPE WITH A SUSPENSION OF REFRACTORY PARTICLES IN A LIQUID, DRYING THE IMPREGNATED SHAPE TO REMOVE THE LIQUID, AND FIRING THE DRIED SHAPE IN AN INERT ATMOSHPERE VOLATILIZE THE MATERIAL OF THE SPONGE AND TO SINTER THE REFRACTORY PARTICLES TOGETHER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |