Patent US3802604A successfully refreshed from Google Patents.
US3594261A
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Nonwoven fabric and method of manufacturing same by perforating a thermoplastic sheet with a laser beam
Assignee: Applied Automation Inc
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Filing: 1968-11-22
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Granted: 1971-07-20
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Expires: 1988-11-22
Abstract
Abstract A LIGHT ABSORBING THERMOPLASTIC SHEET MAY BE CONVERTING INTO A NONWOVEN TEXTURED FABRIC BY DIRECTING A PULSED LASER BEAM ONTO EACH AREA OF A PREDETERMINED PATTERN OF MINUTE CLOSELY-SPACED AREAS OVER THE SURFACE OF THE SHEET WITH SUFFICIENT INTENSITY TO CAUSE THE SHEET TO MELT AND BE PERFORATED IN EACH SUCH AREA. WHILE THE AREA IS MOLTEN, A STREAM OF AIR OR OTHER GAS MAY BE DIRECTED INTO THE AREA WITH SUFFICIENT FORCE AND DURATION TO FIBRILLATE OR OTHERWISE FORM THE MOLTEN MATERIAL THEREIN.
Inventors
- 👤 Arthur B Broerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:40
CPC Classifications
D; D04; D04H; D04H13/00; B; B23; B23K; B23K26/00; B23K26/14; B23K26/36; B23K26/38; B23K26/382; B23K26/40; B23K2101/00; B23K2101/34; B23K2101/35; B23K2103/00; B23K2103/30; B23K2103/38; B23K2103/42; B23K2103/50; Y; Y10; Y10S; Y10S264/00; Y10S264/47; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T428/00; Y10T428/23907; Y10T428/23929; Y10T428/24; Y10T428/24273; Y10T428/8305
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |