Patent US2592882A successfully refreshed from Google Patents.
US2592882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflex light reflector
Assignee: 3M Co
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Filing: 1946-12-04
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Granted: 1952-04-15
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Expires: 1966-12-04
Abstract
No abstract record available.
Inventors
- 👤 Kenneth W Fisher
- 👤 Heltzer Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:56
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/12; G02B5/126; G02B5/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A REFLEX LIGHT REFLECTOR SHEET HAVING A SINGLE LAYER OF SMALL TRANSPARENT SPHERES, WHOSE REFRACTIVE INDEX IS APPROXIMATELY 1.9, PARTICALLY EMBEDDED IN A BINDER COATING ESSENTIALLY CONSISTING OF A TRANSPARENT BODY MATERIAL ADMIXED WITH A FINELY DIVIDED BLACK PIGMENT AND AN ALUMINUM FLAKE PIGMENT, THE PROPORTION OF THE BLACK PIGMENT BEING ABOUT 2-5% AND THE RATIO OF THE ALUMINUM PIGMENT TO THE BLACK PIGMENT BEING IN THE RANGE OF ABOUT 2:1 TO 4:1, BY WEIGHT.
Claim 2
Dependent Claim
75 words
A REFLEX LIGHT REFLECTOR SHEET HAVING A SINGLE LAYER OF SMALL TRANSPARENT SPHERES, WHOSE REFRACTIVE INDEX IS APPROXIMATELY 1.9, PARTICALLY EMBEDDED IN A BINDER COATING ESSENTIALLY CONSISTING OF A TRANSPARENT BODY MATERIAL ADMIXED WITH A FINELY DIVIDED BLACK PIGMENT AND AN ALUMINUM FLAKE PIGMENT, THE PROPORTION OF THE BLACK PIGMENT BEING ABOUT 2-5% AND THE RATIO OF THE ALUMINUM PIGMENT TO THE BLACK PIGMENT BEING IN THE RANGE OF ABOUT 2:1 TO 4:1, BY WEIGHT.
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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) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |