US2615477A
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Assignee: Akzo Nobel UK PLC
•
Filing: 1948-03-18
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Granted: 1952-10-28
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Expires: 1968-03-18
Abstract
No abstract record available.
Inventors
- 👤 William P Crawley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:44
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/08; B01D39/083; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; B01D2239/00; B01D2239/06; B01D2239/065; B01D2239/0654; B01D2239/0681; B01D2239/08; B01D2239/086; Y; Y10; Y10S; Y10S55/00; Y10S55/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
AN ALL-VINYL RESIN FILTER MEDIUM COMPRISING A FABRIC WOVEN FROM YARNS FORMED FROM CONTINUOUS FILAMENTS OF A VINYL RESIN AND YARNS FORMED FROM DISCONTINUOUS FIBERS OF A VINYL RESIN, THE CONTINUOUS FILAMENT YARNS AND THE DISCONTINUOUS FIBER YARN ALTERNATING REGULARLY IN A 1:1 PATTERN IN BOTH YARN SYSTEMS OF THE FIBRIC, THE ENDS OF THE DISCONTINUOUS FIBERS PROTRUDING FROM EACH YARN COMPRISING SUCH FIBERS BEING MASHED WITH THE ENDS OF FIBERS PROTRUDING FROM AN ADJACENT YARN COMPRISING DISCONTINUOUS FIBERS TO FORM A NETWORK WHICH BRIDGES EACH OF THE INTERSTICES OF THE FABRIC, THEREBY PARTIALLY CLOSING INTERSTICES BETWEEN THE YARNS, SAID FABRIC BEING CHARACTERIZED BY CHANNELS WHICH LIE IN TWO PLANES IN THE FABRIC AND BEND THROUGH THE FABRIC FROM ONE FACE THEREOF TO THE OTHER.
Claim 2
Dependent Claim
125 words
AN ALL-VINYL RESIN FILTER MEDIUM COMPRISING A FABRIC WOVEN FROM YARNS FORMED FROM CONTINUOUS FILAMENTS OF A VINYL RESIN AND YARNS FORMED FROM DISCONTINUOUS FIBERS OF A VINYL RESIN, THE CONTINUOUS FILAMENT YARNS AND THE DISCONTINUOUS FIBER YARN ALTERNATING REGULARLY IN A 1:1 PATTERN IN BOTH YARN SYSTEMS OF THE FIBRIC, THE ENDS OF THE DISCONTINUOUS FIBERS PROTRUDING FROM EACH YARN COMPRISING SUCH FIBERS BEING MASHED WITH THE ENDS OF FIBERS PROTRUDING FROM AN ADJACENT YARN COMPRISING DISCONTINUOUS FIBERS TO FORM A NETWORK WHICH BRIDGES EACH OF THE INTERSTICES OF THE FABRIC, THEREBY PARTIALLY CLOSING INTERSTICES BETWEEN THE YARNS, SAID FABRIC BEING CHARACTERIZED BY CHANNELS WHICH LIE IN TWO PLANES IN THE FABRIC AND BEND THROUGH THE FABRIC FROM ONE FACE THEREOF TO THE OTHER.
References Cited (Backward Citations)
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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) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |