US3330760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for evaporating and superheating thermally unstable hydrocarbon mixtures
Assignee: Hoechst AG
•
Filing: 1965-10-12
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Granted: 1967-07-11
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Expires: 1985-10-12
Abstract
No abstract record available.
Inventors
- 👤 Hirschbeck Josef
- 👤 Riedl Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:14
CPC Classifications
C; C10; C10G; C10G7/00; C10G9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR EVAPORATING THERMALLY UNSTABLE HYDROCARBONS AND SUPERHEATING THE SAID HYDROCARBONS AT A TEMPERATURE ABOVE 350*C., WHICH COMPRISES (A) EVAPORATING AT LEAST ONE THERMALLY UNSTABLE HYDROCARBON BY INDIRECT HEAT TRANSFER AT A TEMPERATURE BELOW 180*C., (B) FREEING THE VAPORS OBTAINED IN (A) FROM LIQUID CONSTITUENTS AND FORMED POLYMERS, (C) IMMEDIATELY COMBINING THE VAPORS OBTAINED IN (B) WITH A GAS CURRENT OF THERMALLY STABLE HYDROCARBONS HEATED AT 400 TO 500*C. AND (D) CONDUCTING THE COMBINED GAS CURRENT TO A REACTION ZONE.
Claim 2
Dependent Claim
81 words
A PROCESS FOR EVAPORATING THERMALLY UNSTABLE HYDROCARBONS AND SUPERHEATING THE SAID HYDROCARBONS AT A TEMPERATURE ABOVE 350*C., WHICH COMPRISES (A) EVAPORATING AT LEAST ONE THERMALLY UNSTABLE HYDROCARBON BY INDIRECT HEAT TRANSFER AT A TEMPERATURE BELOW 180*C., (B) FREEING THE VAPORS OBTAINED IN (A) FROM LIQUID CONSTITUENTS AND FORMED POLYMERS, (C) IMMEDIATELY COMBINING THE VAPORS OBTAINED IN (B) WITH A GAS CURRENT OF THERMALLY STABLE HYDROCARBONS HEATED AT 400 TO 500*C. AND (D) CONDUCTING THE COMBINED GAS CURRENT TO A REACTION ZONE.
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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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |