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US3106501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacturing filters
Assignee: Eastman Kodak Co
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Filing: 1959-05-20
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Granted: 1963-10-08
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Expires: 1979-05-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Phara L Cobb
- 👤 Melvin R Hargrave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:55
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/02; A24D3/0204; A24D3/0212; A24D3/022; B; B01; B01D; B01D39/00; B01D39/14; B01D39/16; B01D39/1607; B01D39/1623; B01D39/18; B01D2239/00; B01D2239/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
THE METHOD OF FORMING A ROD-LIKE ELEMENT USEFUL FOR A TOBACCO SMOKE FILTER WHICH COMPRISES (1) OBTAINING A CONTINUOUS BUNDLE OF PRIMARILY LONGITUDINALLY ALIGNED YARN-TYPE CRIMPED PLASTICIZED, THERMOPLASTIC LOOSELYPOSITIONED FILAMENTS; (2) PASSING SAID BUNDLE OF SAID LONGITUDINALLY ALIGNED CRIMPED, PLASTICIZED FILAMENTS THROUGH A HEATED ROD FORMING MEANS COMPRISED OF AN ENLARGED ENTRANCE MEMBER ADAPTED TO RECEIVE THE LOOSELYPOSITIONED LONGITUDINALLY ALIGNED CRIMPED FILAMENTS AND A MORE RESTRICTED EXIT PORTION ADAPTED TO COMPACT THE FILAMENTS INTO THE ROD-LIKE FORM; (3) SOFTENING THE FILAMENTS OF SAID BUNDLE BY SAID HEAT AND COMPACTING AND SHAPING SAID FILAMENTS INTO SAID ROD-LIKE FORM HAVING A CROSS-SECTION THROUGHOUT WHICH THE CRIMPED FILAMENTS ARE DISPOSED AND IN WHICH SAID FILAMENTS ARE COALESCED AT RANDOM ZONES OF FILAMENT CONTACT WHEREBY A GAS PERMEABLE ROD-LIKE ELEMENT IS OBTAINED; AND (4) WITHDRAWING SAID ROD-LIKE ELEMENT FROM SAID EXIT MEMBER OF THE FORMING MEANS.
Claim 2
Independent Claim
142 words
THE METHOD OF FORMING A ROD-LIKE ELEMENT USEFUL FOR A TOBACCO SMOKE FILTER WHICH COMPRISES (1) OBTAINING A CONTINUOUS BUNDLE OF PRIMARILY LONGITUDINALLY ALIGNED YARN-TYPE CRIMPED PLASTICIZED, THERMOPLASTIC LOOSELYPOSITIONED FILAMENTS; (2) PASSING SAID BUNDLE OF SAID LONGITUDINALLY ALIGNED CRIMPED, PLASTICIZED FILAMENTS THROUGH A HEATED ROD FORMING MEANS COMPRISED OF AN ENLARGED ENTRANCE MEMBER ADAPTED TO RECEIVE THE LOOSELYPOSITIONED LONGITUDINALLY ALIGNED CRIMPED FILAMENTS AND A MORE RESTRICTED EXIT PORTION ADAPTED TO COMPACT THE FILAMENTS INTO THE ROD-LIKE FORM; (3) SOFTENING THE FILAMENTS OF SAID BUNDLE BY SAID HEAT AND COMPACTING AND SHAPING SAID FILAMENTS INTO SAID ROD-LIKE FORM HAVING A CROSS-SECTION THROUGHOUT WHICH THE CRIMPED FILAMENTS ARE DISPOSED AND IN WHICH SAID FILAMENTS ARE COALESCED AT RANDOM ZONES OF FILAMENT CONTACT WHEREBY A GAS PERMEABLE ROD-LIKE ELEMENT IS OBTAINED; AND (4) WITHDRAWING SAID ROD-LIKE ELEMENT FROM SAID EXIT MEMBER OF THE FORMING MEANS.
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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) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |