Patent US2649485A successfully refreshed from Google Patents.
US2649485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of methyl acetylene
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1950-01-03
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Granted: 1953-08-18
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Expires: 1970-01-03
Abstract
No abstract record available.
Inventors
- 👤 Taylor Arthur William Charles
- 👤 Jones David Gwyn
- 👤 Allan Morag Lauchlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:02
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/26; C07C1/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PROCESS FOR THE PRODUCTION OF METHYL ACETYLENE WHICH COMPRISES THE STEPS OF SUBJECTING AT LEAST ONE MONOHALOGENATED PROPYLENE IN THE VAPOR PHASE TO DECOPOSITION AT A TEMPERATURE OF 850* C. TO 1050* C. FOR A TIME OF FROM .01 TO .1 SECOND, CALCULATED AT STANDARD TEMPERATURE AND PRESSURE.
Claim 2
Dependent Claim
49 words
A PROCESS FOR THE PRODUCTION OF METHYL ACETYLENE WHICH COMPRISES THE STEPS OF SUBJECTING AT LEAST ONE MONOHALOGENATED PROPYLENE IN THE VAPOR PHASE TO DECOPOSITION AT A TEMPERATURE OF 850* C. TO 1050* C. FOR A TIME OF FROM .01 TO .1 SECOND, CALCULATED AT STANDARD TEMPERATURE AND PRESSURE.
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) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |