US3360347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of porous materials
Assignee: Electro Optical Systems Inc
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Filing: 1964-07-24
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Granted: 1967-12-26
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Expires: 1984-07-24
Abstract
No abstract record available.
Inventors
- 👤 Hoyt H Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:37
CPC Classifications
C; C23; C23F; C23F1/00; B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/114; B22F2998/00; B22F2998/10; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12007; Y10T428/12014; Y10T428/12028; Y10T428/12042; Y10T428/1216
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD FOR PRODUCING A STABLE POROUS STRUCTURE HAVING A SELECTED PORE SIZE AND CONCENTRATION AND LARGE SURFACE PORTION AREA COMPRISING: (A) FORMING A POROUS STRUCTURE OF DESIRED CONFIGURATION FROM A COARSE POWDER, SAID STRUCTURE HAVING A LARGER PORE SIZE AND LOWER PORE CONCENTRATION THAN A SELECTED PORE SIZE AND CONCENTRATION; (B) ETCHING SAID POROUS STRUCTURE TO INCREASE THE PORE CONCENTRATION; AND, (C) IMPREGNATING AND JOINING A FINE POWDER TO SAID POROUS STRUCTURE TO REDUCE THE PORE SIZE.
Claim 2
Independent Claim
78 words
A METHOD FOR PRODUCING A STABLE POROUS STRUCTURE HAVING A SELECTED PORE SIZE AND CONCENTRATION AND LARGE SURFACE PORTION AREA COMPRISING: (A) FORMING A POROUS STRUCTURE OF DESIRED CONFIGURATION FROM A COARSE POWDER, SAID STRUCTURE HAVING A LARGER PORE SIZE AND LOWER PORE CONCENTRATION THAN A SELECTED PORE SIZE AND CONCENTRATION; (B) ETCHING SAID POROUS STRUCTURE TO INCREASE THE PORE CONCENTRATION; AND, (C) IMPREGNATING AND JOINING A FINE POWDER TO SAID POROUS STRUCTURE TO REDUCE THE PORE SIZE.
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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |