US3235618A
Expired / Lapsed
US
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Isomerization process
Assignee: NL Industries Inc
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Filing: 1962-10-02
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Granted: 1966-02-15
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Expires: 1982-10-02
Abstract
No abstract record available.
Inventors
- 👤 Happel John
- 👤 Charles J Marsel
- 👤 Joachim H Blanck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:52
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; B01J21/20; B01J27/00; B01J27/06; B01J27/08; B01J27/12; C; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C2521/00; C07C2521/02; C07C2521/04; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR THE ISOMERIZATION OF ALLENE TO METHYL ACETYLENE, WHICH COMPRISES CONTACTING ALLENE IN THE VAPOR PHASE AT A TEMPERATURE OF FROM 150* TO 410*C. WITH AN ALUMNIA CATALYST ACTIVATED BY DECOMPOSING A HALOCARBON HAVING THE FORMULA CNHXHALYFZ, WHEREIN HAL IS A HALOGEN RADICAL, N IS AN INTEGER FROM ONE TO FOUR, X IS ANTEGER FROM ZERO TO NINE, Y IS AN INTEGER FROM ZERO TO NINE AND Z IS AN INTEGER FROM ONE TO TEN, IN THE PRESENCE OF SAID ALUMINA CATALYST.
Claim 2
Dependent Claim
84 words
A PROCESS FOR THE ISOMERIZATION OF ALLENE TO METHYL ACETYLENE, WHICH COMPRISES CONTACTING ALLENE IN THE VAPOR PHASE AT A TEMPERATURE OF FROM 150* TO 410*C. WITH AN ALUMNIA CATALYST ACTIVATED BY DECOMPOSING A HALOCARBON HAVING THE FORMULA CNHXHALYFZ, WHEREIN HAL IS A HALOGEN RADICAL, N IS AN INTEGER FROM ONE TO FOUR, X IS ANTEGER FROM ZERO TO NINE, Y IS AN INTEGER FROM ZERO TO NINE AND Z IS AN INTEGER FROM ONE TO TEN, IN THE PRESENCE OF SAID ALUMINA CATALYST.
References Cited (Backward Citations)
US2594706A
Cited
FR1299388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |