US3094387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing boron phosphide
Assignee: Monsanto Chemicals Ltd
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Filing: 1957-10-21
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Granted: 1963-06-18
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Expires: 1977-10-21
Abstract
No abstract record available.
Inventors
- 👤 Forrest V Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:08
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
PROCESS FOR THE PREPARATION OF CRYSTALLINE BORON PHOSPHIDE WHICH COMPRISES CONTACTING SOLID BORON WITH THE VAPOR OF PHOSPHOURS AT A TEMPRATURE BETWEEN ABOUT 800*C. AND 1500*C.
Claim 2
Dependent Claim
26 words
PROCESS FOR THE PREPARATION OF CRYSTALLINE BORON PHOSPHIDE WHICH COMPRISES CONTACTING SOLID BORON WITH THE VAPOR OF PHOSPHOURS AT A TEMPRATURE BETWEEN ABOUT 800*C. AND 1500*C.
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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |