US3568406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desiccant air dryer
Assignee: Ingersoll Rand Co
•
Filing: 1968-10-28
•
Granted: 1971-03-09
•
Expires: 1988-10-28
Abstract
Abstract METHOD AND APPARATUS FOR THE PRACTICE THEREOF, AT DEHYDRATING HOT, PRESSURED GAS, IN WHICH A MINOR PORTION OF THE PRESSURED GAS TO BE DEHYDRATED IS CONDUCTED THROUGH ONE OF A PAIR OF DEHYDRATING DESICANT CHAMBERS, TO REACTIVATE THE LATTER, WHILE THE MAJOR PORTION OF THE GAS IS CONDUCT THROUGH THE OTHER CHAMBER OF THE PAIR, TO DEHYDRATE SAID MAJOR PORTION.
Inventors
- 👤 Wesley M Dynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:58
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |