US3374994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing units for gas-liquid contact apparatus
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1966-05-04
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Granted: 1968-03-26
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Expires: 1986-05-04
Abstract
No abstract record available.
Inventors
- 👤 Greer Kent Reaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:33
CPC Classifications
F; F28; F28F; F28F25/00; F28F25/02; F28F25/08; F28F25/087; B; B01; B01J; B01J19/00; B01J19/32; F25; F25B; F25B31/00; F25B31/02; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32203; B01J2219/32206; B01J2219/3221; B01J2219/32213; B01J2219/3222; B01J2219/32224; B01J2219/32227; B01J2219/324; B01J2219/32408; B01J2219/32425; B01J2219/3245; B01J2219/32483; Y; Y10; Y10S; Y10S261/00; Y10S261/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A GAS-LIQUID CONTACT UNIT FOR APPARATUS IN WHICH A GAS STREAM CONTACTS A FILM OF LIQUID FLOWING AS A FILM OVER THE SURFACE OF A CONTACT UNIT, SAID UNIT COMPRISING: ALTERNATE FLAT AND CORRUGATED SHEETS OF RIGID THERMOPLASTIC ORGANIC POLYMERIC MATERIAL STACKED IN CONTACK, THE CORRUGATION OF EACH CORRUGATED SHEET HAVING APICES FORMING LINES OF CONTACT WITH THE FLAT SHEETS; ALL THE CORRUGATED SHEETS DEFINING WITH ALL THE FLAT SHEETS A PLURALITY OF PASSAGES ALL OF WHICH EXTEND FROM ONE COMMON FACE OF THE STACK TO THE OPPOSITE FACE; THE CORRUGATIONS IN THE CORRUGATED SHEETS BEING CURVILINEAR THROUGHOUT SUBSTANTIALLY THEIR ENTIRE LENGTH
Claim 2
Dependent Claim
102 words
A GAS-LIQUID CONTACT UNIT FOR APPARATUS IN WHICH A GAS STREAM CONTACTS A FILM OF LIQUID FLOWING AS A FILM OVER THE SURFACE OF A CONTACT UNIT, SAID UNIT COMPRISING: ALTERNATE FLAT AND CORRUGATED SHEETS OF RIGID THERMOPLASTIC ORGANIC POLYMERIC MATERIAL STACKED IN CONTACK, THE CORRUGATION OF EACH CORRUGATED SHEET HAVING APICES FORMING LINES OF CONTACT WITH THE FLAT SHEETS; ALL THE CORRUGATED SHEETS DEFINING WITH ALL THE FLAT SHEETS A PLURALITY OF PASSAGES ALL OF WHICH EXTEND FROM ONE COMMON FACE OF THE STACK TO THE OPPOSITE FACE; THE CORRUGATIONS IN THE CORRUGATED SHEETS BEING CURVILINEAR THROUGHOUT SUBSTANTIALLY THEIR ENTIRE LENGTH
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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) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |