Patent US3363984A successfully refreshed from Google Patents.
US3363984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of iii-v compounds
Assignee: Monsanto Co
•
Filing: 1959-06-18
•
Granted: 1968-01-16
•
Expires: 1979-06-18
Abstract
No abstract record available.
Inventors
- 👤 Robert A Ruehrwein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:24
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/007; C01; C01B; C01B25/00; C01B25/06; C01G; C01G31/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
137 words
A METHOD FOR THE PREPARATION OF HIGH PURITY COMPOUNDS OF GROUP III-A ELEMENTS SELECTED FROM THE GROUP CONSISTING OF BORON, ALUMINUM, GALLIUM AND INDIUM AND GROUP V-A ELEMENTS SELECTED FROM THE GROUP CONSISTING OF PHOPHOROUS AND ARSENIC, WHICH COMPRISES REACTING IN THE GAS PHASE AT A TEMPERATURE WITHIN THE RANGE OF FROM 500*C TO 1500*C. A VOLITILE HALIDE OF SAID GROUP III-A ELEMENTS AT A PARTIAL PRESSURE OF FROM 0.05 TO 0.15 TOGETHER WITH A VOLATILE HALIDE OF SAID GROUP V-A ELEMENTS AT A PARTIAL PRESSURE OF FROM 0.10 TO 0.20 AND HYDROGEN AT A PARTIAL PRESSURE OF FROM 0.70 TO 0.85, SAID HALIDES BEING SELECTED FROM THE GROUP CONSISTING OF BROMIDES, CHLORIDES AND IODIDES F SAID ELEMENTS, THE PARTIAL PRESSURE OF SAID GROUP III-A HALIDE BEING AT LEAST EQUIVALENT TO THAT OF SAID GROUP V-A HALIDE.
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) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |