Patent US2618668A successfully refreshed from Google Patents.
US2618668A
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Heater control
Assignee: Lummus Technology LLC
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Filing: 1949-07-14
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Granted: 1952-11-18
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Expires: 1969-07-14
Abstract
No abstract record available.
Inventors
- 👤 Ward J F O'connor
- 👤 Jr Frank A Rowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:22
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/08; C07C4/10; Y; Y10; Y10S; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE PROCESS OF CRACKING A SATURATED NORMALLY GASEOUS HYDROCARBON TO PRODUCE PREDOMINANT YIELDS OF UNSATURATED HYDROCARBONS AND HYDROGEN WHICH COMPRISES PASSING SAID HYDROCARBON CHARGE THROUGH AN ATTENTUATED PATH, SUBJECTING SAID HYDROCARBONS TO CRACKING CONDITIONS OF THE ORDER OF 1400* F., PASSING A PORTION OF THE CRACKED EFFLUENT THROUGH A THERMO CONDUCTIVITY MEASURING DEVICE, MEASURING THE THERMOCONDUC-
Claim 2
Dependent Claim
56 words
THE PROCESS OF CRACKING A SATURATED NORMALLY GASEOUS HYDROCARBON TO PRODUCE PREDOMINANT YIELDS OF UNSATURATED HYDROCARBONS AND HYDROGEN WHICH COMPRISES PASSING SAID HYDROCARBON CHARGE THROUGH AN ATTENTUATED PATH, SUBJECTING SAID HYDROCARBONS TO CRACKING CONDITIONS OF THE ORDER OF 1400* F., PASSING A PORTION OF THE CRACKED EFFLUENT THROUGH A THERMO CONDUCTIVITY MEASURING DEVICE, MEASURING THE THERMOCONDUC-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |