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US3674452A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of fabricating illuminated fiber optics

Assignee: American Optical Corp
•
Filing: 1970-06-25
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Granted: 1972-07-04
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Expires: 1990-06-25
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Abstract

Abstract ILLUMINATED IMAGE TRANSPORTING FIBER OPTICS ARE FABRICATED BY FIRST FORMING A COHERENT BUNDLE OF OPTICAL FIBERS, THE ENDS OF THE BUNDLE BEING ARRANGED IN IDENTICAL GEOMETRICAL PATTERNS AND BOUND TOGETHER WITH AN ACID LEACHABLE SILICA-FREE GLASS. A THICKNESS OF FIBERS IS REMOVED FROM ONE END OF THE COHERENT BUNDLE WHEREUPON REMAINING FIBERS AT THAT END AND THE ENTIRE OPPOSITE END OF THE BUNDLE ARE SEALED WITH AN ACID RESISTANT COVER. THE INTERMEDIATE UNCOVERED PARTS OF THE BUNDLE ARE LEACHED TO SIMULTANEOUSLY FREE CORRESPONDING INTERMEDIATE LENGTHS OF THE FIBERS AND ENDS OF THE FIBERS OF SAID PARTIALLY REMOVED THICKNESS THEREOF. THE RESULTING FREE ENDS OF THE PARTIALLY REMOVED THICKNESS OF FIBERS ARE GATHERED INTO A BUNDLE WHEREBY LIGHT APPLIED THERETO PROVIDES ILLUMINATION AT THE OPPOSITE END OF THE COHERENT BUNDLE.

Inventors

  • 👤 Richard R Strack

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 22:51
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/24; G02B23/26; C; C03; C03B; C03B37/00; C03B37/10; C03B37/14; C03B37/15

Claims Analysis

Total Claims: 0
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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) 1975-07-04 1976-01-03 1976-07-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-07-04 1980-01-03 1980-07-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-07-04 1984-01-03 1984-07-04 $7700.00 Window Closed / Lapsed

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