US2952525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing heavy water
Assignee: Rensselaer Polytechnic Institute
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Filing: 1955-10-20
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Granted: 1960-09-13
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Expires: 1975-10-20
Abstract
No abstract record available.
Inventors
- 👤 Harteck Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:29
CPC Classifications
C; C01; C01B; C01B5/00; C01B5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THOSE STEPS IN THE METHOD OF MANUFACTURING HEAVY WATER WHICH COMPRISE COMPRESSING AND COOLING HYDROGEN SULFIDE UNTIL IT IS IN A LIQUID STATE AND INCORPORATING THEREWITH A SUBSTANCE MISCIBLE WITH SAID HYDROGEN SULFIDE BUT SUBSTANTIALLY IMMISCIBLE WITH WATER, HAVING A VAPOR PRESSURE SUBSTANTIALLY LESS THAN THAT OF SAID HYDROGEN SULFIDE, AND SELECTED FROM THE GROUP CONSISTING OF ETHYLENE DICHLORIDE, CARBON DISULFIDE, ETHYL CHLORIDE, BUTAN E, PENTANE, METHANETHIOL, ETHANETHIOL, TRICHLOROFLUOROMETHANE, DICHLORODIFLUOROMETHANE, CHLOROTRIFLUOROMETHANE, DICHLOROMONOFLUOROMETHANE AND TRICHLOROTRIFLUOROETHANE, WHEREBY TO REDUCE THE PRESSURE NORMALLY REQUIRED TO MAINTAIN THE HYDROGEN SULFIDE PHASE IN LIQUID CONDITION AT A TEMPERATURE ABOVE 0*C., AND PREVENT THE
Claim 2
Dependent Claim
98 words
THOSE STEPS IN THE METHOD OF MANUFACTURING HEAVY WATER WHICH COMPRISE COMPRESSING AND COOLING HYDROGEN SULFIDE UNTIL IT IS IN A LIQUID STATE AND INCORPORATING THEREWITH A SUBSTANCE MISCIBLE WITH SAID HYDROGEN SULFIDE BUT SUBSTANTIALLY IMMISCIBLE WITH WATER, HAVING A VAPOR PRESSURE SUBSTANTIALLY LESS THAN THAT OF SAID HYDROGEN SULFIDE, AND SELECTED FROM THE GROUP CONSISTING OF ETHYLENE DICHLORIDE, CARBON DISULFIDE, ETHYL CHLORIDE, BUTAN E, PENTANE, METHANETHIOL, ETHANETHIOL, TRICHLOROFLUOROMETHANE, DICHLORODIFLUOROMETHANE, CHLOROTRIFLUOROMETHANE, DICHLOROMONOFLUOROMETHANE AND TRICHLOROTRIFLUOROETHANE, WHEREBY TO REDUCE THE PRESSURE NORMALLY REQUIRED TO MAINTAIN THE HYDROGEN SULFIDE PHASE IN LIQUID CONDITION AT A TEMPERATURE ABOVE 0*C., AND PREVENT THE
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) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |