Patent US3297778A successfully refreshed from Google Patents.
US3297778A
Expired / Lapsed
US
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Method for isomerizing alpha-alkenes to beta-alkenes with nickel phosphate catalyst
Assignee: Dow Chemical Co
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Filing: 1964-01-06
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Granted: 1967-01-10
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Expires: 1984-01-06
Abstract
No abstract record available.
Inventors
- 👤 Charles R Noddings
- 👤 Ronald G Gates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:30
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/185; B01J27/1853; C; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2525; C07C5/2537
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
THE METHOD WHICH COMPRISES ISOMERIZING A-OLEFINIC HYDROCARBONS HAVING AT LEAST 4 CARBON ATOMS TO THEIR CORRESPONDING B-ISOMERS WHICH COMPRISES PASSING THE HYDROCARBON AT A TEMPERATURE BETWEEN 100* AND 300*C. IN CONTACT WITH A CATALYST COMPOSED OF A METAL PHOSPHATE MATERIAL CONSISTING ESSENTIALLY OF PHOSPHATE RADICALS CHEMICALLY COMBINED WITH NICKEL, WHICH METAL PHOSPHATE MATERIAL IS PREPARABLE BY MIXING A SOLUTION OF SOLUBLE SALT OF NICKEL WITH A SOLUTION OF A SOLUBLE ORTHO-PHOSPHATE AND PRECIPITATING SAID METAL PHOSPHATE MATERIAL FROM THE MIXTURE AT A PH OF BETWEEN ABOUT 6 TO 9.
Claim 2
Independent Claim
89 words
THE METHOD WHICH COMPRISES ISOMERIZING A-OLEFINIC HYDROCARBONS HAVING AT LEAST 4 CARBON ATOMS TO THEIR CORRESPONDING B-ISOMERS WHICH COMPRISES PASSING THE HYDROCARBON AT A TEMPERATURE BETWEEN 100* AND 300*C. IN CONTACT WITH A CATALYST COMPOSED OF A METAL PHOSPHATE MATERIAL CONSISTING ESSENTIALLY OF PHOSPHATE RADICALS CHEMICALLY COMBINED WITH NICKEL, WHICH METAL PHOSPHATE MATERIAL IS PREPARABLE BY MIXING A SOLUTION OF SOLUBLE SALT OF NICKEL WITH A SOLUTION OF A SOLUBLE ORTHO-PHOSPHATE AND PRECIPITATING SAID METAL PHOSPHATE MATERIAL FROM THE MIXTURE AT A PH OF BETWEEN ABOUT 6 TO 9.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |