Patent US3109792A successfully refreshed from Google Patents.
US3109792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing phosphine
Assignee: Hooker Chemical Corp
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Filing: 1960-07-27
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Granted: 1963-11-05
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Expires: 1980-07-27
Abstract
No abstract record available.
Inventors
- 👤 Gordon Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:54
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE PROCESS FOR PREPARING PHOSPHINE WHICH COMPRISES CONTACTING AN ANODE AND A CATHODE WITH AN AQUEOUS INORGANIC ELECTROLYTE, AT LEAST A PORTON OF THE CATHODIC SURFACE OF SAID CATHODE CONTAINING ELEMENTAL PHOSPHORUS, AND PASSING AN ELECTRIC CURRENT BETWEEN SAID ANODE AND SAID CATHODE THROUGH SAID ELECTROLYTE, TO YIELD A CATHODIC CURRENT DENSITY DURING ELECTROLYSIS IN THE RANGE BETWEEN ABOUT FIVE AND ABOUT ONE THOUSAND AMPERES PER SQUARE FOOT, WHEREBY A PHOSPHINE-CONTAINING GAS IS PRODUCED AT THE CATHODE.
Claim 2
Dependent Claim
77 words
THE PROCESS FOR PREPARING PHOSPHINE WHICH COMPRISES CONTACTING AN ANODE AND A CATHODE WITH AN AQUEOUS INORGANIC ELECTROLYTE, AT LEAST A PORTON OF THE CATHODIC SURFACE OF SAID CATHODE CONTAINING ELEMENTAL PHOSPHORUS, AND PASSING AN ELECTRIC CURRENT BETWEEN SAID ANODE AND SAID CATHODE THROUGH SAID ELECTROLYTE, TO YIELD A CATHODIC CURRENT DENSITY DURING ELECTROLYSIS IN THE RANGE BETWEEN ABOUT FIVE AND ABOUT ONE THOUSAND AMPERES PER SQUARE FOOT, WHEREBY A PHOSPHINE-CONTAINING GAS IS PRODUCED AT THE CATHODE.
References Cited (Backward Citations)
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Cited
US791194A
Cited
US1040379A
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US1375819A
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FR1130548A
Cited
US2867568A
Cited
US2913383A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |