Patent EP0753948A1 successfully refreshed from Google Patents.
Patent US2793238A successfully refreshed from Google Patents.
US2793238A
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Preparation of cyclopentene
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-01-03
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Granted: 1957-05-21
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Expires: 1975-01-03
Abstract
No abstract record available.
Inventors
- 👤 Fred W Banes
- 👤 Herbert K Wiese
- 👤 Ober C Slotterbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:25
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/02; C07C5/03; C07C5/05; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/755; C07C2523/76; C07C2523/80; C07C2601/00; C07C2601/06; C07C2601/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE PROCESS OF PREPARING CYCLOPENTENE WHICH COMPRISES PASSING A MIXTURE OF CYCLOPENTADIENE WITH A CONTROLLED AMOUNT OF HYDROGEN, OF THE ORDER OF 0.5 TO 1.5 MOLES OF HYDROGEN PER MOLE OF CYCLOPENTADIENE, INTO CONTACT WITH A MILD HYDROGENATION CATALYST CONSISTING ESSENTIALLY OF METALLIC NICKEL IN ADMIXTURE WITH A SMALL MODIFYING AMOUNT OF ZINC OXIDE AT A TEMPERATURE IN THE RANGE OF 200*C. TO 400*C. FOR A PEROID IN WHICH 35 TO 75% OF THE CYCLOPENTADIENE IS CONVERTED
Claim 2
Dependent Claim
77 words
THE PROCESS OF PREPARING CYCLOPENTENE WHICH COMPRISES PASSING A MIXTURE OF CYCLOPENTADIENE WITH A CONTROLLED AMOUNT OF HYDROGEN, OF THE ORDER OF 0.5 TO 1.5 MOLES OF HYDROGEN PER MOLE OF CYCLOPENTADIENE, INTO CONTACT WITH A MILD HYDROGENATION CATALYST CONSISTING ESSENTIALLY OF METALLIC NICKEL IN ADMIXTURE WITH A SMALL MODIFYING AMOUNT OF ZINC OXIDE AT A TEMPERATURE IN THE RANGE OF 200*C. TO 400*C. FOR A PEROID IN WHICH 35 TO 75% OF THE CYCLOPENTADIENE IS CONVERTED
References Cited (Backward Citations)
US2360555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |