US3243966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrate decomposition refrigeration process
Assignee: Dow Chemical Co
•
Filing: 1962-05-07
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Granted: 1966-04-05
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Expires: 1982-05-07
Abstract
No abstract record available.
Inventors
- 👤 David N Glew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:40
CPC Classifications
F; F25; F25B; F25B25/00; F25B9/00; F25B9/002; F25B9/006; F25B2315/00; F25B2315/003; Y; Y10; Y10S; Y10S585/00; Y10S585/909; Y10S585/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A REFRIGERATION PROCESS WHICH COMPRISES; (1) PROVIDING A HYDRATE FORMING GAS, THE HYDRATE OF SAID GAS BEING A SOLID, (2) INTRODUCING SAID GAS INTO A VAPOR SPACE OVERLYING AN AQUEOUS LIDUQID FOR ADMIXTURE THEREWITH FORMING A GAS-AQUEOUS MIXTURE, (3) SUBJECTING THE GAS-AQUEOUS MIXTURE TO A PRESSURE AND TEMPERATURE AT WHICH SOLID HYDRATE OF SAID GAS FORMS IN THE PRESENCE OF SAID AQUEOUS LIQUID AND CONVEYING A SLURRY OF SAID SOLID HYDRATE AND AQUEOUS LIQUID TO A DECOMPOSITION CHAMBER, (4) DECOMPOSING IN SAID DECOMPOSITION CHAMBER AT A PRESSURE LOWER THAN THE HYDRATE FORMING PRESSURE AND WITH HEAT ABSORPTION FROM A HEAT SOURCE TO BE COOLED THE SOLID GAS HYDRATE THEREBY REGERNERATING SAID HYDRATE FORMING GAS AND SAID AQUEOUS LIQUID, (5) RECOMPRESSING SAID GAS, AND (6) RECIRCULATING SAID COMPRESSED GAS AND AQUEOUS LIQUID FOR FURTHER HYDRATE FORMATION.
Claim 2
Dependent Claim
135 words
A REFRIGERATION PROCESS WHICH COMPRISES; (1) PROVIDING A HYDRATE FORMING GAS, THE HYDRATE OF SAID GAS BEING A SOLID, (2) INTRODUCING SAID GAS INTO A VAPOR SPACE OVERLYING AN AQUEOUS LIDUQID FOR ADMIXTURE THEREWITH FORMING A GAS-AQUEOUS MIXTURE, (3) SUBJECTING THE GAS-AQUEOUS MIXTURE TO A PRESSURE AND TEMPERATURE AT WHICH SOLID HYDRATE OF SAID GAS FORMS IN THE PRESENCE OF SAID AQUEOUS LIQUID AND CONVEYING A SLURRY OF SAID SOLID HYDRATE AND AQUEOUS LIQUID TO A DECOMPOSITION CHAMBER, (4) DECOMPOSING IN SAID DECOMPOSITION CHAMBER AT A PRESSURE LOWER THAN THE HYDRATE FORMING PRESSURE AND WITH HEAT ABSORPTION FROM A HEAT SOURCE TO BE COOLED THE SOLID GAS HYDRATE THEREBY REGERNERATING SAID HYDRATE FORMING GAS AND SAID AQUEOUS LIQUID, (5) RECOMPRESSING SAID GAS, AND (6) RECIRCULATING SAID COMPRESSED GAS AND AQUEOUS LIQUID FOR FURTHER HYDRATE FORMATION.
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |