US2915426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 08:12
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
Cited
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 |