Patent US2883257A successfully refreshed from Google Patents.
US3176584A
Expired / Lapsed
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Reflex reflective sheeting and method of making same
Assignee: Prismo Safety Corp
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Filing: 1961-10-11
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Granted: 1965-04-06
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Expires: 1981-10-11
Abstract
No abstract record available.
Inventors
- 👤 Vries Eduard R De
- 👤 Jr William H Riley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:15
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/12; G02B5/126; G02B5/128
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A REFLEX REFLECTIVE SHEETING COMPRISING A LAYER OF A TRANSPARENT BINDER MATERIAL HAVING A MONOLAYER OF SMALL TRANSPARENT GLASS SPHERES COMPLETELY EMBEDDED THEREIN, ONE SURFACE OF SAID LAYER BEING FLAT AND HAVING THE SPHERES IN POINT CONTACT THEREWITH, THE OTHER SURFACE OF SAID LAYER ASSUMING THE CURVED CONFIGURATIONS OF THE SURFACES OF SAID SPHERES, AND A THIN REFLECTING COAT ON THE OTHER SURFACE OF SAID LAYER SAID REFLECTING COAT HAVING THE CURVED CONFIGURATION OF SAID OTHER SURFACE AND BEING EVENLY SPACED BY SAID TRANSPARENT BINDER FROM SAID SPHERE.
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |