Patent US4731304A successfully refreshed from Google Patents.
Patent US3298989A successfully refreshed from Google Patents.
Patent US3128507A successfully refreshed from Google Patents.
US3128507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of depositing fibers from one tow onto another tow incident to forming a nonwoven web
Assignee: Crompton and Knowles Corp
•
Filing: 1962-01-19
•
Granted: 1964-04-14
•
Expires: 1982-01-19
Abstract
No abstract record available.
Inventors
- 👤 Lincoln E Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:30
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/70; D04H1/72; Y; Y10; Y10T; Y10T225/00; Y10T225/10; Y10T225/16; Y10T225/30; Y10T225/329
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
THE METHOD OF CONVERTING FILAMENTS OF SYNTHETIC MATERIAL IN TOW FORM INTO A NONWOVEN WEB INCLUDING THE FOLLOWING STEPS: FEEDING A TOW OF FILAMENTS TO AN OPERATING STATION, BREAKING THE FILAMENTS INTO FIBERS AT THE STATION, COLLECTING THE FIBERS ON A SECOND TOW, PASSING THE SECOND TOW AND THE FIBERS THEREON THROUGH A SECOND STATION TO BREAK THE FILAMENTS OF THE SECOND TOW INTO FIBERS AND MIX THE LATTER WITH THE FIBERS OF THE FIRST TOW, AND THEREAFTER DEPOSITING THE FIBERS FROM BOTH TOWS ON A MOVING CONVEYOR TO PRODUCE A COMPOSITE NONWOVEN WEB INCLUDING FIBERS CORRESPONDING TO BOTH TOWS.
Claim 2
Independent Claim
100 words
THE METHOD OF CONVERTING FILAMENTS OF SYNTHETIC MATERIAL IN TOW FORM INTO A NONWOVEN WEB INCLUDING THE FOLLOWING STEPS: FEEDING A TOW OF FILAMENTS TO AN OPERATING STATION, BREAKING THE FILAMENTS INTO FIBERS AT THE STATION, COLLECTING THE FIBERS ON A SECOND TOW, PASSING THE SECOND TOW AND THE FIBERS THEREON THROUGH A SECOND STATION TO BREAK THE FILAMENTS OF THE SECOND TOW INTO FIBERS AND MIX THE LATTER WITH THE FIBERS OF THE FIRST TOW, AND THEREAFTER DEPOSITING THE FIBERS FROM BOTH TOWS ON A MOVING CONVEYOR TO PRODUCE A COMPOSITE NONWOVEN WEB INCLUDING FIBERS CORRESPONDING TO BOTH TOWS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |