US2801154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of metal cyanates
Assignee: Ethyl Corp
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Filing: 1953-12-31
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Granted: 1957-07-30
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Expires: 1973-12-31
Abstract
No abstract record available.
Inventors
- 👤 Pree David O De
- 👤 Kenneth L Lindsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:13
CPC Classifications
C; C01; C01C; C01C3/00; C01C3/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR THE MANUFACTURE OF METAL CYANATES WHICH COMPRISES PREMIXING A BASIC METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METAL COMPOUNDS OF PARTICLE SIZE LESS THAN 20 MICRONS WITH BETWEEN ABOUT THE STOICHIOMETRIC AMOUNT AND 10 PERCENT IN EXCESS THEREOF A FINELY DIVIDED UREA OF PARTICLE SIZE LESS THAN 20 MICRONS AND HEATING SAID PREMIX TO A TEMPERATURE ABOVE THE MELTING POINT OF SAID UREA.
Claim 2
Dependent Claim
71 words
A PROCESS FOR THE MANUFACTURE OF METAL CYANATES WHICH COMPRISES PREMIXING A BASIC METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METAL COMPOUNDS OF PARTICLE SIZE LESS THAN 20 MICRONS WITH BETWEEN ABOUT THE STOICHIOMETRIC AMOUNT AND 10 PERCENT IN EXCESS THEREOF A FINELY DIVIDED UREA OF PARTICLE SIZE LESS THAN 20 MICRONS AND HEATING SAID PREMIX TO A TEMPERATURE ABOVE THE MELTING POINT OF SAID UREA.
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) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |