US2502569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of alkylcyclopentane hydrocarbons
Assignee: Universal Oil Products Co
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Filing: 1947-12-30
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Granted: 1950-04-04
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Expires: 1967-12-30
Abstract
No abstract record available.
Inventors
- 👤 Vladimir N Ipatieff
- 👤 Pines Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:00
CPC Classifications
C; C07; C07C; C07C4/00; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/755; C07C2601/00; C07C2601/06; C07C2601/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR MANUFACTURING ALKYLCYCLOPENTANE HYDROCARBONS WHICH COMPRISES DESTRUCTIVE HYDROGENATING A BICYCLOALKANE HYDROCARBON HAVING ONLY TWO RINGS INCLUDING A RING OF 5-CARBON ATOMS AND A SECOND RING OF 6-CARBON ATOMS WITH FOUR CARBON ATOMS COMMON TO THE TWO RINGS AT A PRESSURE OF FROM ABOUT 50 TO ABOUT 150 ATMOSPHERES.
Claim 2
Dependent Claim
50 words
A PROCESS FOR MANUFACTURING ALKYLCYCLOPENTANE HYDROCARBONS WHICH COMPRISES DESTRUCTIVE HYDROGENATING A BICYCLOALKANE HYDROCARBON HAVING ONLY TWO RINGS INCLUDING A RING OF 5-CARBON ATOMS AND A SECOND RING OF 6-CARBON ATOMS WITH FOUR CARBON ATOMS COMMON TO THE TWO RINGS AT A PRESSURE OF FROM ABOUT 50 TO ABOUT 150 ATMOSPHERES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |