Patent US2509160A successfully refreshed from Google Patents.
US2509160A
Expired / Lapsed
US
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Making hexachlorocyclopentadiene
Assignee: Purdue Research Foundation
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Filing: 1945-12-22
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Granted: 1950-05-23
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Expires: 1965-12-22
Abstract
No abstract record available.
Inventors
- 👤 Earl T Mcbee
- 👤 Charles F Baranauckas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:52
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE METHOD WHICH INCLUDES: HEATING, AT ABOUT ATMOSPHERIC PRESSURE, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROCARBONS WHEREIN THE NUMBER OF CARBON ATOMS IN THE HYDROCARBON MOLECULE IS AT LEAST FIVE, AND WHEREIN THE LONGEST STRAIGHT CHAIN CONTAINS AT LEAST FOUR CARBON ATOMS; ALICYCLIC HYDROCARBONS CONTAINING FIVE CARBON ATOMS IN THE RING; AND CHLORINATED DERIVATIVES OF THE FOREGOING TYPES OF HYDROCARBONS, WITH CHLORINE, IN AMOUNT AT LEAST THAT THEORETICALLY REQUIRED TO PRODUCE HEXACHLOROCYCLOPENTADIENE, IN A SUBSTANTIALLY UNOBSTRUCTED REACTION ZONE, AT A TEMPERATURE BETWEEN ABOUT 350 AND ABOUT 550 DEGREES CENTIGRADE, AND, SEPARATING HEXACHLOROCYCLOPENTADIENE FROM THE REACTION PRODUCT.
Claim 2
Independent Claim
99 words
THE METHOD WHICH INCLUDES: HEATING, AT ABOUT ATMOSPHERIC PRESSURE, A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC HYDROCARBONS WHEREIN THE NUMBER OF CARBON ATOMS IN THE HYDROCARBON MOLECULE IS AT LEAST FIVE, AND WHEREIN THE LONGEST STRAIGHT CHAIN CONTAINS AT LEAST FOUR CARBON ATOMS; ALICYCLIC HYDROCARBONS CONTAINING FIVE CARBON ATOMS IN THE RING; AND CHLORINATED DERIVATIVES OF THE FOREGOING TYPES OF HYDROCARBONS, WITH CHLORINE, IN AMOUNT AT LEAST THAT THEORETICALLY REQUIRED TO PRODUCE HEXACHLOROCYCLOPENTADIENE, IN A SUBSTANTIALLY UNOBSTRUCTED REACTION ZONE, AT A TEMPERATURE BETWEEN ABOUT 350 AND ABOUT 550 DEGREES CENTIGRADE, AND, SEPARATING HEXACHLOROCYCLOPENTADIENE FROM THE REACTION PRODUCT.
References Cited (Backward Citations)
GB468016A
Cited
US2281096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |