Patent US6451011B2 successfully refreshed from Google Patents.
Patent US3567545A successfully refreshed from Google Patents.
US3567545A
Expired / Lapsed
US
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Method of forming fibertapes using rotating mating pressure rolls
Assignee: Individual
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Filing: 1968-05-14
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Granted: 1971-03-02
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Expires: 1988-05-14
Abstract
Abstract APPARATUS FOR CONTINUOUS PRODUCTION OF FIBERTAPES, WITH ELIMINATION OF SUBSEQUENT SEPARATE SLITTING OPERATIONS COMPRISING A PAIR OF ROTATABLE PRESSURE ROLLS WITH CONTINUOUS CIRCUMFERENTIAL GROOVES ON THEIR SURFACE, THE ROLLS BEING SO POSITIONED SIDE BY SIDE THAT EACH MALE MEMBER OF THE GROOVED SURFACE OF ONE ROLL FITS INTO THE CORRESPONDING FEMALE MEMBER OF THE OTHER ROLL; AND A METHOD FOR PRODUCTING FIBERTAPES BY INTRODUCING STAPLE FIBERS AND A POLYMERIC BONDING AGENT BETWEEN SUCH ROTATING GROOVED PRESSURE ROLLS. D R A W I N G
Inventors
- 👤 Emilian Bobkowicz
- 👤 Andrew J Bobkowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:58
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; D02G3/40; D02G3/402; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054; Y10T156/1084; Y10T156/1085; Y10T156/1087; Y10T156/1089; Y10T156/109; Y10T156/12; Y10T156/1317; Y10T156/1322; Y10T156/1326
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |