US2908723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perchlorocarbon having the empirical formula c10cl10
Assignee: Hooker Chemical Corp
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Filing: 1955-06-27
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Granted: 1959-10-13
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Expires: 1975-06-27
Abstract
No abstract record available.
Inventors
- 👤 John T Rucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:46
CPC Classifications
C; C07; C07C; C07C23/00; C07C23/18; C07C17/00; C07C17/26; C07C17/263; C07C17/269
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE PROCESS FOR PREPARING A PERCHLOROCARBON HAVING THE EMPIRICAL FORMULA C10CL10 AND A MELTING POINT OF 120 TO 122 DEGREES CENTIGRADE WHICH COMPRISES THE REDUCTIVE COUPLING AT A TEMPERATURE OF ABOUT 20 TO ABOUT 40 DEGREES CENTIGRADE OF HEXACHLOROCYCLOPENTADIENE BY TREATMENT WITH HYDROGEN IN THE PRESENCE OF A NOBLE METAL OF GROUP VIII HAVING AN ATOMIC WEIGHT GREATER THAN 43, SAID METAL BEING IN THE METALLIC STATE AND SUPPORTED ON A CARRIER SELECTED FROM THE GROUP CONSISTING OF ACTIVATED ALUMINA, ACTIVATED CHARCOAL AND KIESELGUHR, NO SOLVENT OTHER THAN A HYDROCARBON SOLVENT BEING EMPLOYED.
Claim 2
Dependent Claim
93 words
THE PROCESS FOR PREPARING A PERCHLOROCARBON HAVING THE EMPIRICAL FORMULA C10CL10 AND A MELTING POINT OF 120 TO 122 DEGREES CENTIGRADE WHICH COMPRISES THE REDUCTIVE COUPLING AT A TEMPERATURE OF ABOUT 20 TO ABOUT 40 DEGREES CENTIGRADE OF HEXACHLOROCYCLOPENTADIENE BY TREATMENT WITH HYDROGEN IN THE PRESENCE OF A NOBLE METAL OF GROUP VIII HAVING AN ATOMIC WEIGHT GREATER THAN 43, SAID METAL BEING IN THE METALLIC STATE AND SUPPORTED ON A CARRIER SELECTED FROM THE GROUP CONSISTING OF ACTIVATED ALUMINA, ACTIVATED CHARCOAL AND KIESELGUHR, NO SOLVENT OTHER THAN A HYDROCARBON SOLVENT BEING EMPLOYED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |