US3868294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflective markers
Assignee: National Patent Development Corp
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Filing: 1972-03-31
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Granted: 1975-02-25
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Expires: 1992-03-31
Abstract
Abstract Reflective surfaces, e.g. signs are made by impinging electrostatically charged particles having a reflective coating on an adhesive coated backing. By the use of appropriate hydrophilic polymers the reflective material can be made fog free.
Inventors
- 👤 Robert Gayle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:12
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/12; G09; G09F; G09F13/00; G09F13/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
99 words
A SUBSTRATE HAVING ADHERED THERETO A PLURALITY OF THIN, SHORT, INDIVIDUAL FIBERS, SAID FIBERS EACH HAVING AN INNER END WHICH IS ADHERED TO SAID SUBSTRATE AND HAVING AN OPPOSITE AND EXPOSED OUTER END, SAID FIBERS EACH COMPRISING A CENTRAL, CLEAR TRANSPARENT PORTION WHICH EXTENDS LONGITUDINALLY FROM SAID INNER END TO THE OUTER END OF THE FIBER, AND AN EXTERNAL, LONGITUDINALLY EXTENDING FROM SAID INNER END TO SAID OUTER END, MIRROR COATING ON SAID TRANSPARENT PORTION FORMING A REFLECTIVE SURFACE TO THE INNER SIDE THEREOF, WHEREBY WHEN LIGHT IS IMPINGED ON SAID FIBERS IT IS REFLECTED BACK TOWARD ITS SOURCE.
Claim 2
Dependent Claim
99 words
A SUBSTRATE HAVING ADHERED THERETO A PLURALITY OF THIN, SHORT, INDIVIDUAL FIBERS, SAID FIBERS EACH HAVING AN INNER END WHICH IS ADHERED TO SAID SUBSTRATE AND HAVING AN OPPOSITE AND EXPOSED OUTER END, SAID FIBERS EACH COMPRISING A CENTRAL, CLEAR TRANSPARENT PORTION WHICH EXTENDS LONGITUDINALLY FROM SAID INNER END TO THE OUTER END OF THE FIBER, AND AN EXTERNAL, LONGITUDINALLY EXTENDING FROM SAID INNER END TO SAID OUTER END, MIRROR COATING ON SAID TRANSPARENT PORTION FORMING A REFLECTIVE SURFACE TO THE INNER SIDE THEREOF, WHEREBY WHEN LIGHT IS IMPINGED ON SAID FIBERS IT IS REFLECTED BACK TOWARD ITS SOURCE.
Claim 3
Dependent Claim
14 words
A substrate according to claim 1 wherein the mirror coating is a metal coating.
Claim 4
Dependent Claim
12 words
A substrate according to claim 2 wherein said fibers are glass fibers.
Claim 5
Dependent Claim
24 words
A substrate according to claim 2 wherein the fibers are water insoluble, hydrophilic water absorbing fibers whereby the reflective surface is rendered fog free.
Claim 6
Dependent Claim
17 words
A substrate according to claim 1 wherein the fibers have a length of 0.1 to 3 mm.
Claim 7
Dependent Claim
17 words
A substrate according to claim 5 wherein the fibers have a length of 0.5 to 1.5 mm.
Claim 8
Dependent Claim
14 words
A substrate according to claim 5 wherein the mirror coating is a metal coating.
Claim 9
Dependent Claim
12 words
A substrate according to claim 7 wherein said fibers are glass fibers.
Claim 10
Dependent Claim
24 words
A substrate according to claim 7 wherein said fibers are water insoluble hydrophilic water absorbing fibers whereby the reflective surface is rendered fog free.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |