US3313533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-liquid contact apparatus having sheet-like surfaces
Assignee: Dow Chemical Co
•
Filing: 1963-09-12
•
Granted: 1967-04-11
•
Expires: 1983-09-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:42
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/08; B01D45/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A GAS-LIQUID CONTACT APPARATUS EMPLOYING A PLURALITY OF SUPPORTS HAVING SHEETS DEPENDENT THEREFROM, THE IMPROVEMENT WHICH COMPRISES A SHEET DISPOSED OVER A SUPPORT MEMBER WHEREIN A PORTION OF THE SHEET IS DEPENDENT ON EACH SIDE OF THE SUPPORT MEMBER, MEANS DEFINING A PATH FOR LIQUID FROM AN UPPERMOST PORTION OF THE SHEET TO INNER FACES OF DEPENDENT PORTIONS OF THE SHEET; THE SHEET DEFINING A PLURALITY OF OPENINGS ADJACENT THE SUPPORT MEMBER AND THE OPENINGS BEING ALTERNATELY POSITIONED ON EITHER SIDE OF THE SUPPORT MEMBER, AND ADJA-
Claim 2
Dependent Claim
88 words
IN A GAS-LIQUID CONTACT APPARATUS EMPLOYING A PLURALITY OF SUPPORTS HAVING SHEETS DEPENDENT THEREFROM, THE IMPROVEMENT WHICH COMPRISES A SHEET DISPOSED OVER A SUPPORT MEMBER WHEREIN A PORTION OF THE SHEET IS DEPENDENT ON EACH SIDE OF THE SUPPORT MEMBER, MEANS DEFINING A PATH FOR LIQUID FROM AN UPPERMOST PORTION OF THE SHEET TO INNER FACES OF DEPENDENT PORTIONS OF THE SHEET; THE SHEET DEFINING A PLURALITY OF OPENINGS ADJACENT THE SUPPORT MEMBER AND THE OPENINGS BEING ALTERNATELY POSITIONED ON EITHER SIDE OF THE SUPPORT MEMBER, AND ADJA-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |