US2810764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydration of acetylene and catalyst therefor
Assignee: Escambia Chemical Corp
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Filing: 1953-04-06
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Granted: 1957-10-22
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Expires: 1973-04-06
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Steadman
- 👤 Jr James F Gabbett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:50
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1817
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE PROCESS FOR PRODUCING ACETALDEHYDE WHICH COMPRISES PASSING ACETYLENE AND STEAM OVER A CATALYST MAINTAINED AT A TEMPERATURE BETWEEN ABOUT 300*C. AND 440* C., SAID CATALYST CONSISTING ESSENTIALLY OF A METAL SILICATE SELECTED FROM THE CLASS CONSISTING OF CADMIUM SILICATE AND ZINC SILICATE WITH FROM ABOUT 15% TO 25% BY WEIGHT OF COMBINED PHOSPHATE AND FROM ABOUT 0.01% TO 0.2% BY WEIGHT OF COMBINED COPPER.
Claim 2
Dependent Claim
64 words
A CATALYST FOR PRODUCING ACETALDEHYDE WITH A HIGH DEGREE OF CONVERSION OF ACETYLENE TO ACETALDEHYDE AND A LOW DEGREE OF PRODUCTION OF CROTONALDEHYDE, SAID CATALYST CONSISTING ESSENTIALLY OF A METAL SILICATE SELECTED FROM THE CLASS CONSISTING OF CADMIUM SILICATE AND ZINC SILICATE WITH FROM ABOUT 15% TO 25% BY WEIGHT OF COMBINED PHOSPHATE AND FROM ABOUT 0.01 TO 0.2% BY WEIGHT OF COMBINED COPPER.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |