Patent US2877279A successfully refreshed from Google Patents.
US2877279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for thermal dehydrogenation
Assignee: Individual
•
Filing: 1955-01-10
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Granted: 1959-03-10
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Expires: 1975-01-10
Abstract
No abstract record available.
Inventors
- 👤 Frank C Fowler
- 👤 James G Seay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:08
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/327; C10; C10G; C10G9/00; C10G9/34; C10G9/36; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A METHOD OF CONTROLLING THE SUPPLY OF HEAT TO AN ENDOTHERMIC VAPOR-PHASE REACTION WHICH COMPRISES (A) RESTRICTING THE CROSS-SECTIONAL AREA OF A FAST FLOWING STREAM OF SUPERHEATED STEAM AT SUPERATMOSPHERIC PRESSURE TO EFFECT AT LEAST A 10% LINEAR VELOCITY INCREASE THEREIN WHILE INITIATING THE ENDOTHERMIC REACTION, AND THEN GRADUALLY EXPANDING THE CROSS-SECTIONAL AREA OF THE GAS STREAM WHILE CONTINUING THE ENDOTHERMIC REACTION TO EFFECT AT LEAST A 25% LINEAR VELOCITY DECREASE THEREIN SO AS TO CONVERT KINETIC ENERGY IN THE STREAM TO HEAT ENERGY TO OFFSET HEAT LOSSES RESULTING FROM THE ENDOTHERMIC REACTION, (B) NEXT EFFECTING HEAT EXCHANGE BETWEEN THE RESULTING REACTION PRODUCT-CONTAINING STEAM AND WATER AT SUBATMOSPHERIC PRESSURE TO OBTAIN MAXIMUM USE OF THE HEAT OF THE REACTION PRODUCT-CONTAINING STEAM AS HEAT OF VAPORIZATION FOR THE CREATION OF FRESH STEAM AT SUBATMOSPHERIC PRESSUE, (C) THEN COMPRESSING THE FRESH STEAM OT SUPERATMOSPHERIC PRESSURE AND (D) FINALLY SUPERHEATING THE FRESH STEAM OF STEP (C) TO PROVIDE STEAM FOR THE FAST FLOWING STREAM OF STEP (A).
Claim 2
Independent Claim
164 words
A METHOD OF CONTROLLING THE SUPPLY OF HEAT TO AN ENDOTHERMIC VAPOR-PHASE REACTION WHICH COMPRISES (A) RESTRICTING THE CROSS-SECTIONAL AREA OF A FAST FLOWING STREAM OF SUPERHEATED STEAM AT SUPERATMOSPHERIC PRESSURE TO EFFECT AT LEAST A 10% LINEAR VELOCITY INCREASE THEREIN WHILE INITIATING THE ENDOTHERMIC REACTION, AND THEN GRADUALLY EXPANDING THE CROSS-SECTIONAL AREA OF THE GAS STREAM WHILE CONTINUING THE ENDOTHERMIC REACTION TO EFFECT AT LEAST A 25% LINEAR VELOCITY DECREASE THEREIN SO AS TO CONVERT KINETIC ENERGY IN THE STREAM TO HEAT ENERGY TO OFFSET HEAT LOSSES RESULTING FROM THE ENDOTHERMIC REACTION, (B) NEXT EFFECTING HEAT EXCHANGE BETWEEN THE RESULTING REACTION PRODUCT-CONTAINING STEAM AND WATER AT SUBATMOSPHERIC PRESSURE TO OBTAIN MAXIMUM USE OF THE HEAT OF THE REACTION PRODUCT-CONTAINING STEAM AS HEAT OF VAPORIZATION FOR THE CREATION OF FRESH STEAM AT SUBATMOSPHERIC PRESSUE, (C) THEN COMPRESSING THE FRESH STEAM OT SUPERATMOSPHERIC PRESSURE AND (D) FINALLY SUPERHEATING THE FRESH STEAM OF STEP (C) TO PROVIDE STEAM FOR THE FAST FLOWING STREAM OF STEP (A).
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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) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |