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US3341024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for molecular filtration and methods for its fabrication
Assignee: Individual
•
Filing: 1965-10-04
•
Granted: 1967-09-12
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Expires: 1985-10-04
Abstract
No abstract record available.
Inventors
- 👤 Lowe Edison
- 👤 Everett L Durkee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/06; B01D63/061; B01D63/062; B01D63/063; B01D67/00; B01D67/0002; B01D67/0009; B01D67/0013; B01D67/0023; B01D69/00; B01D69/10; B01D69/107; B01D69/1071; B01D71/00; B01D71/06; B01D71/08; B01D71/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
97 words
A METHOD FOR FABRICATING APPARATUS FOR FILTRATION WHICH COMPRISES FORMING POROUS SHEET MATERIAL INTO A TUBE, WINDING ABOUT SAID TUBE A PLURALITY OF SUPERIMPOSED LAYERS OF GLASS FIBERS, COATING EACH OF SAID LAYERS WITH A LIQUID RESIN COMPOSITION, SUBJECTING THE RESULTING LAMINATED ASSEMBLY TO VACUUM TO DEVELOP POROSITY THROUGH THE GLASS FIBER-RESIN STRUCTURE, SETTING THE RESIN, DRAWING A SEALING MATERIAL INTO THE ENDS OF THE ASSEMBLY TO RENDER THESE END PORTIONS IMPERFORATE, INSTALLING A TUBULAR MEMBRANE WITHIN THE TUBE AND SEALING THE ENDS OF THE MEMBRANE AGAINST THE INNER WALLS OF THE IMPERFORATE ENDS OF THE TUBE.
Claim 2
Independent Claim
97 words
A METHOD FOR FABRICATING APPARATUS FOR FILTRATION WHICH COMPRISES FORMING POROUS SHEET MATERIAL INTO A TUBE, WINDING ABOUT SAID TUBE A PLURALITY OF SUPERIMPOSED LAYERS OF GLASS FIBERS, COATING EACH OF SAID LAYERS WITH A LIQUID RESIN COMPOSITION, SUBJECTING THE RESULTING LAMINATED ASSEMBLY TO VACUUM TO DEVELOP POROSITY THROUGH THE GLASS FIBER-RESIN STRUCTURE, SETTING THE RESIN, DRAWING A SEALING MATERIAL INTO THE ENDS OF THE ASSEMBLY TO RENDER THESE END PORTIONS IMPERFORATE, INSTALLING A TUBULAR MEMBRANE WITHIN THE TUBE AND SEALING THE ENDS OF THE MEMBRANE AGAINST THE INNER WALLS OF THE IMPERFORATE ENDS OF THE TUBE.
Claim 3
Dependent Claim
72 words
A TUBULAR LAMINATED STRUCTURE OF USE IN CONDUCTING FILTRATION COMPRISING, IN COMBINATION, A TUBE OF POROUS CUSHIONING MATERIAL, A SURROUNDING POROUS SUPPORT COMPOSED OF A PLURALITY OF PILES OF GLASS FIBER EACH IMPREGNATED WITH A RESIN, SAID STRUCTURE HAVING IMPERFORATE ENDS IMPERVIOUS TO LIQUIDS, A SEAMLESS TUNULAR MEMBRANE WITHIN THE CUSHIONING TUBE, AND EXPANDED SLEEVES AND THE ENDS OF THE MEMBRANE TO THE INNER WALLE OF THE IMPERFORATE ENDS OF SAID STRUCTURE.
Claim 4
Dependent Claim
72 words
A TUBULAR LAMINATED STRUCTURE OF USE IN CONDUCTING FILTRATION COMPRISING, IN COMBINATION, A TUBE OF POROUS CUSHIONING MATERIAL, A SURROUNDING POROUS SUPPORT COMPOSED OF A PLURALITY OF PILES OF GLASS FIBER EACH IMPREGNATED WITH A RESIN, SAID STRUCTURE HAVING IMPERFORATE ENDS IMPERVIOUS TO LIQUIDS, A SEAMLESS TUNULAR MEMBRANE WITHIN THE CUSHIONING TUBE, AND EXPANDED SLEEVES AND THE ENDS OF THE MEMBRANE TO THE INNER WALLE OF THE IMPERFORATE ENDS OF SAID STRUCTURE.
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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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |