US2569128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing phosphorus sulfides
Assignee: Monsanto Chemicals Ltd
•
Filing: 1948-03-24
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Granted: 1951-09-25
•
Expires: 1968-03-24
Abstract
No abstract record available.
Inventors
- 👤 Otha C Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:36
CPC Classifications
C; C01; C01B; C01B25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
THE PROCESS OF CONTINUOUSLY PRODUCING A PHOSPHORUS SULFIDE SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS PENTASULFIDE, PHOSPHORUS HEPTASULFIDE AND PHOSPHORUS SESQUISULFIDE, WHICH COMPRISES CONTINUOUSLY INTRODUCING PHOSPHORUS AND SULFUR INTO A MOLTEN MASS CONSISTING OF SAID PHOSPHORUS SULFIDE AND THEREBY CONTINUOUSLY EFFECTING A REACTION BETWEEN SAID PHOSPHORUS AND SAID SULFUR, SAID REACTANTS BEING INTRODUCED CONTINUOUSLY INTO SAID MOLTEN MASS IN SUBSTANTIALLY THE PROPORTIONS CALCULATED TO YIELD SAID PHOSPHORUS SULFIDE AND AT A RATE MAINTAINING SAID
Claim 2
Dependent Claim
74 words
THE PROCESS OF CONTINUOUSLY PRODUCING A PHOSPHORUS SULFIDE SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS PENTASULFIDE, PHOSPHORUS HEPTASULFIDE AND PHOSPHORUS SESQUISULFIDE, WHICH COMPRISES CONTINUOUSLY INTRODUCING PHOSPHORUS AND SULFUR INTO A MOLTEN MASS CONSISTING OF SAID PHOSPHORUS SULFIDE AND THEREBY CONTINUOUSLY EFFECTING A REACTION BETWEEN SAID PHOSPHORUS AND SAID SULFUR, SAID REACTANTS BEING INTRODUCED CONTINUOUSLY INTO SAID MOLTEN MASS IN SUBSTANTIALLY THE PROPORTIONS CALCULATED TO YIELD SAID PHOSPHORUS SULFIDE AND AT A RATE MAINTAINING SAID
References Cited (Backward Citations)
US745546A
Cited
US1153054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |