US3149914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of hydrogen cyanide
Assignee: Distillers Co Yeast Ltd
•
Filing: 1961-06-09
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Granted: 1964-09-22
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Expires: 1981-06-09
Abstract
No abstract record available.
Inventors
- 👤 Bellringer Frederick James
- 👤 Newman Frank Christopher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:58
CPC Classifications
C; C01; C01C; C01C3/00; C01C3/02; C01C3/0208; C01C3/0241
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
THE PROCESS FOR THE PRODUCTION OF HYDROGEN CYANIDE WHICH COMPRISES PASSING METHAN OL WITH AMMONIA AND OXYGEN IN THE VAPOUR PHASE AT REACTION TEMPERATURE OVER A CATALYST SELECTED FROM THE GROUP CONSISTING OF (I) A MIXTURE CONSISTING OF THE OXIDES OF ANTIMONY AND TIN, AND (II) A COMPOUND CONSISTING OF ANTIMONY, TIN AND OXYGEN.
Claim 2
Dependent Claim
54 words
THE PROCESS FOR THE PRODUCTION OF HYDROGEN CYANIDE WHICH COMPRISES PASSING METHAN OL WITH AMMONIA AND OXYGEN IN THE VAPOUR PHASE AT REACTION TEMPERATURE OVER A CATALYST SELECTED FROM THE GROUP CONSISTING OF (I) A MIXTURE CONSISTING OF THE OXIDES OF ANTIMONY AND TIN, AND (II) A COMPOUND CONSISTING OF ANTIMONY, TIN AND OXYGEN.
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |