US3152877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed air dehydrator
Assignee: Individual
•
Filing: 1957-07-03
•
Granted: 1964-10-13
•
Expires: 1977-07-03
Abstract
No abstract record available.
Inventors
- 👤 Hiram J Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:42
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THE METOD OF DEHYDRATING AIR COMPRISING THE SEQUENTIAL STEPS OF RAISING THE VAPOR PRESSURE OF THE AIR BY COMPRESSION, COOLING ALL OF THE AIR SO COMPRESSED TO A TEMPERATURE APPROACHING BUT ABOVE WATER FREEZING TEMPERATURES, SUBJECTING THE COOLED COMPRESSED AIR TO SEQUENTIAL CONTACT WITH A DILUTE HYGROSCOPIC SOLUTION, A SATURATED HYGRASCOPIC SOLUTION AND A SOLID HYGROSCOPIC AGENT, RECOOLING THE COMPRESSED AIR TO ABOVE DEW POINT AND BELOW FREEZING TEMPERATURES AND SUBJECTING THE RECOOLED COMPRESSED AIR SEQUENTIALLY TO A DILUTE HYDROSCOPIC SOLUTION, A SATURATED HYGROSCOPIC SOLUTION AND A SOLID HYGROSCOPIC AGENT.
Claim 2
Dependent Claim
90 words
THE METOD OF DEHYDRATING AIR COMPRISING THE SEQUENTIAL STEPS OF RAISING THE VAPOR PRESSURE OF THE AIR BY COMPRESSION, COOLING ALL OF THE AIR SO COMPRESSED TO A TEMPERATURE APPROACHING BUT ABOVE WATER FREEZING TEMPERATURES, SUBJECTING THE COOLED COMPRESSED AIR TO SEQUENTIAL CONTACT WITH A DILUTE HYGROSCOPIC SOLUTION, A SATURATED HYGRASCOPIC SOLUTION AND A SOLID HYGROSCOPIC AGENT, RECOOLING THE COMPRESSED AIR TO ABOVE DEW POINT AND BELOW FREEZING TEMPERATURES AND SUBJECTING THE RECOOLED COMPRESSED AIR SEQUENTIALLY TO A DILUTE HYDROSCOPIC SOLUTION, A SATURATED HYGROSCOPIC SOLUTION AND A SOLID HYGROSCOPIC AGENT.
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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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |