US2766301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of tricyclodecane
Assignee: Ruhrchemie AG
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Filing: 1954-04-22
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Granted: 1956-10-09
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Expires: 1974-04-22
Abstract
No abstract record available.
Inventors
- 👤 Buchner Karl
- 👤 Roelen Otto
- 👤 Meis Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:11
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/02; C07C5/03; C07C2521/00; C07C2521/06; C07C2521/08; C07C2521/10; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/75; C07C2523/755; C07C2603/00; C07C2603/56; C07C2603/58; C07C2603/60; C07C2603/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR THE PRODUCTION OF PURE TRICYCLODECANE, WHICH COMPRISES HYDROGENATING DICYCLOPENTADINE AT A TEMPERATURE NOT SUBSTANTIALLY IN EXCESS OF ABOUT 150* C. IN THE PRESENCE OF A HYDROGENATION CATALYST ACTIVE AT SAID TEMPERATURE UNTIL THE IODINE NUMBER OF THE HYDROGENATION REACTION PRODUCT FORMED SUBSTANTIALLY DISAPPEARS, SEPARATING A FRACTION BOILING BETWEEN ABOUT 188* AND 190* C. FROM THE HDYROGENATION REACTION PRODUCT, SUBLIMATING THIS FRACTION AT A TEMPERATURE BELOW ITS BOILING POINT WITH AN INERT, SUBSTANTIALLY NITROGEN-FREE GAS, AND RECOVERING PURE TRICYCLODECANE.
Claim 2
Dependent Claim
81 words
A PROCESS FOR THE PRODUCTION OF PURE TRICYCLODECANE, WHICH COMPRISES HYDROGENATING DICYCLOPENTADINE AT A TEMPERATURE NOT SUBSTANTIALLY IN EXCESS OF ABOUT 150* C. IN THE PRESENCE OF A HYDROGENATION CATALYST ACTIVE AT SAID TEMPERATURE UNTIL THE IODINE NUMBER OF THE HYDROGENATION REACTION PRODUCT FORMED SUBSTANTIALLY DISAPPEARS, SEPARATING A FRACTION BOILING BETWEEN ABOUT 188* AND 190* C. FROM THE HDYROGENATION REACTION PRODUCT, SUBLIMATING THIS FRACTION AT A TEMPERATURE BELOW ITS BOILING POINT WITH AN INERT, SUBSTANTIALLY NITROGEN-FREE GAS, AND RECOVERING PURE TRICYCLODECANE.
References Cited (Backward Citations)
US1903850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |