US2903438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of raney metal suspensions
Assignee: Celanese Corp
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Filing: 1955-02-07
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Granted: 1959-09-08
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Expires: 1975-02-07
Abstract
No abstract record available.
Inventors
- 👤 Adin L Stautzenberger
- 👤 Alexander F Maclean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:43
CPC Classifications
B; B01; B01J; B01J25/00; B01J25/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
PROCESS FOR THE TREATMENT OF SUSPENSION OF RANEY METAL PARTICLES IN A LIQUID MEDIUM CONTAINING WATER WHICH COMPRISES MIXING SAID SUSPENSIONS WITH A POLYELECTROLYTE TO AGGLOMERATE SAID PARTICLES AND SEPARATING SAID AGGLOMERATED PARTICLES FROM SAID LIQUID MEDIUM.
Claim 2
Dependent Claim
37 words
PROCESS FOR THE TREATMENT OF SUSPENSION OF RANEY METAL PARTICLES IN A LIQUID MEDIUM CONTAINING WATER WHICH COMPRISES MIXING SAID SUSPENSIONS WITH A POLYELECTROLYTE TO AGGLOMERATE SAID PARTICLES AND SEPARATING SAID AGGLOMERATED PARTICLES FROM SAID LIQUID MEDIUM.
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) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |