US2774585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for purifying liquid materials
Assignee: Individual
•
Filing: 1953-08-17
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Granted: 1956-12-18
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Expires: 1973-08-17
Abstract
No abstract record available.
Inventors
- 👤 John J Wirts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:52
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/20; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/231; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN AN APPARATUS FOR REMOVAL OF DISSOLVED OR SUSPENDED SUBSTANCES IN LIQUID MEDIA HAVING A TANK OR OTHER CONTAINER AT OR NEAR THE BOTTOM OF WHICH IS LOCATED A POROUS MEDIUM AND HAVING MEANS FOR SUPPLYING A GAS UNDER PRESSURE TO SAID POROUS MEDIUM WHEREBY SAID GAS DIFUSES THROUGH SAID POROUS, MEDIUM THENCE THROUGH THE LIQUID MEDIUM, THEREBY SEPARATING SAID DISSOLVED OR SUSPENDED SUBSTANCES FROM SAID LIQUID MEDIUM, AN IMPROVEMENT CHARACTERIZED IN THAT THE WALLS OF THE PORES OF SAID POROUS MEDIUM HAVE BEEN COATED WITH A THIN COATING OF AN ORGANOSILOXANE RESIN HAVING AN AVERAGE OF FROM 1 TO 1.7 MONOVALENT HYDROCARBON RADICALS PER SILICON, AT LEAST A MAJOR PORTION OF THE SILICON ATOMS BEING CONNECTED BY SI-O-SI LINKAGES, ANY REMAINING SILICON ATOMS BEING CONNECTED BY LINKAGES SELECTED FROM THE GROUP CONSISTING OF SI-C-SI AND SI-SI.
Claim 2
Dependent Claim
137 words
IN AN APPARATUS FOR REMOVAL OF DISSOLVED OR SUSPENDED SUBSTANCES IN LIQUID MEDIA HAVING A TANK OR OTHER CONTAINER AT OR NEAR THE BOTTOM OF WHICH IS LOCATED A POROUS MEDIUM AND HAVING MEANS FOR SUPPLYING A GAS UNDER PRESSURE TO SAID POROUS MEDIUM WHEREBY SAID GAS DIFUSES THROUGH SAID POROUS, MEDIUM THENCE THROUGH THE LIQUID MEDIUM, THEREBY SEPARATING SAID DISSOLVED OR SUSPENDED SUBSTANCES FROM SAID LIQUID MEDIUM, AN IMPROVEMENT CHARACTERIZED IN THAT THE WALLS OF THE PORES OF SAID POROUS MEDIUM HAVE BEEN COATED WITH A THIN COATING OF AN ORGANOSILOXANE RESIN HAVING AN AVERAGE OF FROM 1 TO 1.7 MONOVALENT HYDROCARBON RADICALS PER SILICON, AT LEAST A MAJOR PORTION OF THE SILICON ATOMS BEING CONNECTED BY SI-O-SI LINKAGES, ANY REMAINING SILICON ATOMS BEING CONNECTED BY LINKAGES SELECTED FROM THE GROUP CONSISTING OF SI-C-SI AND SI-SI.
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) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |