US3170969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-liquid contacting operations
Assignee: Individual
•
Filing: 1960-08-01
•
Granted: 1965-02-23
•
Expires: 1980-08-01
Abstract
No abstract record available.
Inventors
- 👤 Bernard J Lerner
- 👤 Leva Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:30
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/30; B01J2219/00; B01J2219/30; B01J2219/302; B01J2219/30223; B01J2219/304; B01J2219/30408; B01J2219/30416; B01J2219/30433; B01J2219/30466; Y; Y10; Y10S; Y10S261/00; Y10S261/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN A GAS-LIQUID CONTACT TOWER HAVING MEANS TO SUPPLY GAS AND LIQUID TO PACKING MATERIAL CONTAINED WITHIN SAID TOWER, SAID PACKING MATERIAL PROVIDING A RELATIVELY LARGE SURFACE AREA WITHIN SAID TOWER OVER WHICH STREAMS OF SAID GAS AND LIQUID FLOW, THE IMPROVEMENT WHICH COMPRISES THE UTILIZATION OF A PACKING MATERIAL HAVING IMPERVIOUS, NON-ABSORBENT EXTERNAL SURFACES, SAID SURFACES BEING PROVIDED WITH A THIN, CONTINUOUS COATING, COVERING ESSENTIALLY THE ENTIRE SURFACES OF SAID PACKING, SAID COATING CONSISTING OF SUB-MICROSCOPIC PARTICLES OF SILICA RANGING OF THE ORDER OF 1 TO 200 MILLIMICRONS IN SIZE, WHEREBY SUBSTANTIALLY INCREASED LIQUID FILMING OVER THE IMPERVIOUS, NON-ABSORBENT EXTERNAL SURFACES OF SAID PACKING OCCURS, THEREBY SUBSTANTIALLY INCREASING THE MASS TRANSFER EFFICIENCY OF SAID TOWER WITHOUT SIGNIFICANT ALTERATION OF THE GAS PRESSURE DROP THERETHROUGH.
Claim 2
Dependent Claim
125 words
IN A GAS-LIQUID CONTACT TOWER HAVING MEANS TO SUPPLY GAS AND LIQUID TO PACKING MATERIAL CONTAINED WITHIN SAID TOWER, SAID PACKING MATERIAL PROVIDING A RELATIVELY LARGE SURFACE AREA WITHIN SAID TOWER OVER WHICH STREAMS OF SAID GAS AND LIQUID FLOW, THE IMPROVEMENT WHICH COMPRISES THE UTILIZATION OF A PACKING MATERIAL HAVING IMPERVIOUS, NON-ABSORBENT EXTERNAL SURFACES, SAID SURFACES BEING PROVIDED WITH A THIN, CONTINUOUS COATING, COVERING ESSENTIALLY THE ENTIRE SURFACES OF SAID PACKING, SAID COATING CONSISTING OF SUB-MICROSCOPIC PARTICLES OF SILICA RANGING OF THE ORDER OF 1 TO 200 MILLIMICRONS IN SIZE, WHEREBY SUBSTANTIALLY INCREASED LIQUID FILMING OVER THE IMPERVIOUS, NON-ABSORBENT EXTERNAL SURFACES OF SAID PACKING OCCURS, THEREBY SUBSTANTIALLY INCREASING THE MASS TRANSFER EFFICIENCY OF SAID TOWER WITHOUT SIGNIFICANT ALTERATION OF THE GAS PRESSURE DROP THERETHROUGH.
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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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |