Patent US3109788A successfully refreshed from Google Patents.
US3109788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic production of 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
- 👤 George T Miller
- 👤 Steingart John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:54
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A PROCESS FOR PRODUCING PHOSPHINE WHICH COMPRISES CONTACTING AN ANODE AND A SOLID VERTICAL CATHODE WITH AN AQUEOUS ELECTROLYTE, THE LOWER PORTION OF SAID CATHODE BEING IN CONTACT WITH A POOL OF MOLTEN YELLOW PHOSPHORUS, MAINTAINING A THIN LAYER OF MOLTEN YELLOW PHOSPHORUS ON THE SURFACE OF SAID CATHODE ABOVE AND CONTIGUOUS WITH SAID POOL OF MOLTEN PHOSPHORUS, MAINTAINING AN ELECTRIC CURRENT BETWEEN SAID ANODE AND SAID CATHODE THROUGH SAID ELECTROLYTE, WHEREBY SAID PHOSPHORUS FORMS A PHOSPHINE CONTAINING GAS AT SAID CATHODE, AND WHEREBY PHOSPHORUS CONSUMED FROM THE THIN LAYER ON THE SURFACE OF SAID CATHODE IS REPLENISHED FROM SAID POOL OF MOLTEN PHOSPHORUS.
Claim 2
Dependent Claim
104 words
A PROCESS FOR PRODUCING PHOSPHINE WHICH COMPRISES CONTACTING AN ANODE AND A SOLID VERTICAL CATHODE WITH AN AQUEOUS ELECTROLYTE, THE LOWER PORTION OF SAID CATHODE BEING IN CONTACT WITH A POOL OF MOLTEN YELLOW PHOSPHORUS, MAINTAINING A THIN LAYER OF MOLTEN YELLOW PHOSPHORUS ON THE SURFACE OF SAID CATHODE ABOVE AND CONTIGUOUS WITH SAID POOL OF MOLTEN PHOSPHORUS, MAINTAINING AN ELECTRIC CURRENT BETWEEN SAID ANODE AND SAID CATHODE THROUGH SAID ELECTROLYTE, WHEREBY SAID PHOSPHORUS FORMS A PHOSPHINE CONTAINING GAS AT SAID CATHODE, AND WHEREBY PHOSPHORUS CONSUMED FROM THE THIN LAYER ON THE SURFACE OF SAID CATHODE IS REPLENISHED FROM SAID POOL OF MOLTEN PHOSPHORUS.
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) | 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 |