US2794735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of porous shaped articles
Assignee: BASF SE
•
Filing: 1952-05-08
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Granted: 1957-06-04
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Expires: 1972-05-08
Abstract
No abstract record available.
Inventors
- 👤 Schlecht Leo
- 👤 Klippel Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:59
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F2998/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR THE PRODUCTION OF A HIGHLY POROUS SHAPED ARTICLE HAVING PORES CHARACTERIZED BY A HIGH DEGREE OF UNIFORMITY IN DISTRIBUTION AND IN WIDTH FROM A LIGHT METAL POWDER OBTAINED BY THERMAL DECOMPOSITION OF A METAL CARBONYL AND CONTAINING COARSE SPONGY PARTICLES WHICH COMPRISES BREAKING UP SAID PARTICLES INTO SMALLER SPONGY PARTICLES BY FORCING THEM THROUGH A SIEVE WHILE AVOIDING CRUSHING THEM, AND SINTERING THE POWDER THUS OBTAINED.
Claim 2
Dependent Claim
69 words
A PROCESS FOR THE PRODUCTION OF A HIGHLY POROUS SHAPED ARTICLE HAVING PORES CHARACTERIZED BY A HIGH DEGREE OF UNIFORMITY IN DISTRIBUTION AND IN WIDTH FROM A LIGHT METAL POWDER OBTAINED BY THERMAL DECOMPOSITION OF A METAL CARBONYL AND CONTAINING COARSE SPONGY PARTICLES WHICH COMPRISES BREAKING UP SAID PARTICLES INTO SMALLER SPONGY PARTICLES BY FORCING THEM THROUGH A SIEVE WHILE AVOIDING CRUSHING THEM, AND SINTERING THE POWDER THUS OBTAINED.
References Cited (Backward Citations)
US1838831A
Cited
US2082126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |