Patent US3736217A successfully refreshed from Google Patents.
US3736217A
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Light-conducting fiber material
Assignee: American Optical Corp
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Filing: 1971-01-28
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Granted: 1973-05-29
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Expires: 1991-01-28
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
- 👤 K Nagao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:53
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4479; G02B6/448; B; B29; B29C; B29C59/00; B29C59/007; B29C59/02; B29C59/04; B29C59/046; B32; B32B; B32B27/00; D; D01; D01D; D01D5/00; D01D5/42; D01D5/426; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/31504; Y10T428/31855; Y10T428/31938
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |