Patent US2988428A successfully refreshed from Google Patents.
US2988428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for reducing the deuterium concentration of the residual moisture adhering to a pulverulent catalyst substance after filtration of a catalyst suspension through th filter cake
Assignee: Individual
•
Filing: 1958-08-19
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Granted: 1961-06-13
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Expires: 1978-08-19
Abstract
No abstract record available.
Inventors
- 👤 Hesky Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:03
CPC Classifications
C; C01; C01B; C01B5/00; C01B5/02; B; B01; B01J; B01J37/00; B01J37/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN A METHOD FOR PRODUCING HEAVY WATER WHEREIN WATER AND HYDROGEN ARE BROUGHT INTO CATALYTIC ISOTOPE EXCHANGE WITH A FINELY DIVIDED CATALYST IN WATER, SEPARATING SAID CATALYST FROM SAID WATER, AND FEEDING SAID WATER INTO A HYDROGEN GENERATOR, THE IMPROVEMENT WHICH CONSISTS IN SEPARATING SAID WATER SUBSTANTIALLY COMPLETELY FROM SAID CATALYST AND AVOIDING DUSTING THEREOF, SAID IMPROVEMENT COMPRISING FORMING A CAKE OF SAID CATALYST ON
Claim 2
Dependent Claim
65 words
IN A METHOD FOR PRODUCING HEAVY WATER WHEREIN WATER AND HYDROGEN ARE BROUGHT INTO CATALYTIC ISOTOPE EXCHANGE WITH A FINELY DIVIDED CATALYST IN WATER, SEPARATING SAID CATALYST FROM SAID WATER, AND FEEDING SAID WATER INTO A HYDROGEN GENERATOR, THE IMPROVEMENT WHICH CONSISTS IN SEPARATING SAID WATER SUBSTANTIALLY COMPLETELY FROM SAID CATALYST AND AVOIDING DUSTING THEREOF, SAID IMPROVEMENT COMPRISING FORMING A CAKE OF SAID CATALYST ON
References Cited (Backward Citations)
FR1138776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |