Patent EP0269176A2 successfully refreshed from Google Patents.
Patent US2915426A successfully refreshed from Google Patents.
US2915426A
Expired / Lapsed
US
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Filter device and method for making a filter device
Assignee: Individual
•
Filing: 1956-09-11
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Granted: 1959-12-01
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Expires: 1976-09-11
Abstract
No abstract record available.
Inventors
- 👤 Poelman Armand Jacques Julien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:27
CPC Classifications
B; B31; B31D; B31D5/00; B31D5/0082; B01; B01D; B01D29/00; B01D29/01; B01D29/012; B01D29/05; B01D29/07; B01D39/00; B01D39/14; B01D39/16; B01D39/18; B01D46/00; B01D46/52; B01D46/521; B01D46/523; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1016; Y10T156/1018
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A METHOD OF PREPARING AN ACCORDION-FOLDED FILTER, COMPRISING, IN COMBINATION, THE STEPS OF CONTINOUSLY MOVING IN ONE DIRECTION A FILTER SHEET PAST AN APPLICATION STATION AT SAID APPLICATION STATION PROVIDING AT LEAST ONE FACE OF SAID SHEET WITH A PLURALITY OF ELONGNATED SPACING ELEMENTS EACH FORMED BY A RAISED BEAD OF ADHESIVE EXTENDING IN SAID DIRECTION AND BEING SPACED FROM EACH OTHER IN A DIRECTION TRANSVERSE TO SAID DIRECTION; DRYING SAID BEADS OF ADHESIVE AND THEREBY CAUSING SAID ELEMENTS TO BE PERMANENTLY BONDED TO SAID SHEET; AND ALTERNATELY FOLDING SAID FILTER SHEET AND SAID SPACING ELEMENTS ALONG TRANSVERSE FOLD LINES IN OPPOSITE DIRECTIONS TO OBTAIN AN ACCORDION-SHAPED FILTER HAVING ADJACENT ACCORDION FOLDS SPACED APART BY THE RAISED BEADS OF ADHESIVE.
Claim 2
Independent Claim
120 words
A METHOD OF PREPARING AN ACCORDION-FOLDED FILTER, COMPRISING, IN COMBINATION, THE STEPS OF CONTINOUSLY MOVING IN ONE DIRECTION A FILTER SHEET PAST AN APPLICATION STATION AT SAID APPLICATION STATION PROVIDING AT LEAST ONE FACE OF SAID SHEET WITH A PLURALITY OF ELONGNATED SPACING ELEMENTS EACH FORMED BY A RAISED BEAD OF ADHESIVE EXTENDING IN SAID DIRECTION AND BEING SPACED FROM EACH OTHER IN A DIRECTION TRANSVERSE TO SAID DIRECTION; DRYING SAID BEADS OF ADHESIVE AND THEREBY CAUSING SAID ELEMENTS TO BE PERMANENTLY BONDED TO SAID SHEET; AND ALTERNATELY FOLDING SAID FILTER SHEET AND SAID SPACING ELEMENTS ALONG TRANSVERSE FOLD LINES IN OPPOSITE DIRECTIONS TO OBTAIN AN ACCORDION-SHAPED FILTER HAVING ADJACENT ACCORDION FOLDS SPACED APART BY THE RAISED BEADS OF ADHESIVE.
References Cited (Backward Citations)
FR745466A
Cited
US1780732A
Cited
US1770854A
Cited
US2397759A
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US2569243A
Cited
CH295379A
Cited
FR1111568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |