US2537283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization of olefins
Assignee: Universal Oil Products Co
•
Filing: 1948-09-29
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Granted: 1951-01-09
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Expires: 1968-09-29
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Schaad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:02
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2525; C07C5/2537; C07C5/2206; C07C5/2226; C07C5/224; C07C5/27; C07C5/2767; C07C5/277; C07C5/2778; C07C5/2783; C07C2521/00; C07C2521/06; C07C2521/08; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PROCESS FOR ISOMERIZING OLEFINIC HYDROCARBONS WHICH COMPRISES CONTACTING AN OLEFINIC HYDROCARBON HAVING AT LEAST FOUR CARBON ATOMS PER MOLECULE AT ISOMERIZING CONDITIONS WITH AN AMMONIUM PHOSPHATE.
Claim 2
Dependent Claim
27 words
A PROCESS FOR ISOMERIZING OLEFINIC HYDROCARBONS WHICH COMPRISES CONTACTING AN OLEFINIC HYDROCARBON HAVING AT LEAST FOUR CARBON ATOMS PER MOLECULE AT ISOMERIZING CONDITIONS WITH AN AMMONIUM PHOSPHATE.
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) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |