US3666587A
Expired / Lapsed
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Method of making a laminated light-conducting fiber material
Assignee: American Optical Corp
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Filing: 1969-09-29
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Granted: 1972-05-30
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Expires: 1989-09-29
Abstract
Abstract PLASTIC LIGHT-CONDUCTING FIBER RIBBONS ARE FORMED OF A TRANSPARENT HIGH REFRACTIVE INDEX STRIP OF PLASTIC MATERIAL COVERED WITH THIN FILMS OF RELATIVELY LOW REFRACTIVE INDEX PLASTIC MATERIAL. THE COVERED STRIP IS HEATED AND ROLLED TO THE CONFIGURATION OF A MULTIPLICITY OF INTERCONNECTED JUXTAPOSED FIBERS FROM WHICH MONOFILAMENTS MAY BE CUT LONGITUDINALLY OF THE RIBBON.
Inventors
- 👤 Kazuyoshi Nagao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:24
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B32B7/00; B32B7/02; B32B7/023; B29; B29C; B29C59/00; B29C59/007; B29C59/02; B29C59/04; B29C59/046; B32B27/30; B32B27/302; B32B3/00; B32B3/26; D; D01; D01D; D01D5/00; D01D5/42; D01D5/426; B32B2307/00; B32B2307/40; B32B2307/418; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1039; Y10T156/1043; Y10T156/1044; Y10T156/1052; Y10T156/1084; Y10T156/1087
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |