US3258932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration air dryer
Assignee: Puregas Equipment Corp
•
Filing: 1964-08-27
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Granted: 1966-07-05
•
Expires: 1984-08-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Kern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:34
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1405; B; B01; B01D; B01D53/00; B01D53/26; B01D53/265; F24F2003/144
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE METHOD OF DEHUMIDIFYING AIR COMPRISING THE STEPS OF: COOLING THE AIR IN A HEAT EXCHANGER TO PRECIPITATE THE MOISTURE THEREFROM; COLLECTING THE PRECIPITATED MOISTURE IN A WATER RESERVOIR; HEATING THE WATER RESERVOIR; AND CYCLING THE WATER FROM SAID RESERVOIR THROUGH SAID HEAT EXCHANGER IN RESPONSE TO DECREASED PRESSURE INITIATED BY FROST AND ICE THEREIN.
Claim 2
Independent Claim
55 words
THE METHOD OF DEHUMIDIFYING AIR COMPRISING THE STEPS OF: COOLING THE AIR IN A HEAT EXCHANGER TO PRECIPITATE THE MOISTURE THEREFROM; COLLECTING THE PRECIPITATED MOISTURE IN A WATER RESERVOIR; HEATING THE WATER RESERVOIR; AND CYCLING THE WATER FROM SAID RESERVOIR THROUGH SAID HEAT EXCHANGER IN RESPONSE TO DECREASED PRESSURE INITIATED BY FROST AND ICE THEREIN.
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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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |