US3623903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing light-conducting systems particularly for ultraviolet light
Assignee: Schott AG
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Filing: 1970-05-12
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Granted: 1971-11-30
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Expires: 1990-05-12
Abstract
Abstract LIGHT CONDUCTING SYSTEMS, PARTICULARLY FOR ULTRAVIOLET LIGHT ARE PRODUCED BY COATING QUARTZ GLASS RODS AND FIBRES WITH A SYNTHETIC RESIN HAVING AN INDEX OF REFRACTION WHICH IS SMALLER THAN THE MATERIAL TO BE COATED; THE SYNTHETIC RESIN COMPRISING A TRANSPARENT, HIGHLY FLUORIDIZED, ALIPHATIC SYNTHETIC SUBSTANCE, PREFERABLY A MIXED-POLYMERIZATE MADE FROM TETRAFLUOROETHYLENE AND HEXAFLUOROPROPYLENE.
Inventors
- 👤 Helmut Dislich
- 👤 Alfred Jacobsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:25
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/10; G02B6/102; C; C03; C03C; C03C17/00; C03C17/28; C03C17/32; C03C17/328; C03C25/00; C03C25/10; C03C25/104; C03C25/105; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/31504; Y10T428/3154; Y10T428/31544
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |