US3043196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflective marking aggregate
Assignee: 3M Co
•
Filing: 1957-09-18
•
Granted: 1962-07-10
•
Expires: 1977-09-18
Abstract
No abstract record available.
Inventors
- 👤 Philip V Palmquist
- 👤 Eugene L Mckenzie
- 👤 Thomas L Harrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:47
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00605; B29D11/00615; E; E01; E01F; E01F9/00; E01F9/50; E01F9/506; E01F9/524; E01F9/576; E01F9/578; G; G02; G02B; G02B5/00; G02B5/12; G02B5/126; G02B5/128; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/60; G03B21/602
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
INDIVIDUAL PARTICLES OF REFLECTIVE AGGREGATE HAVING AN AVERAGE DIAMETER NOT OVER ONE-HALF INCH, EACH HANDLEABLE AS A SEPARATE ARTICLE AND BEING ADAPTED FOR USE IN PROVIDING MARKERS OF EFFICIENT REFLEX REFLECTION OF INCIDENT BEAMS OF LIGHT STRIKING THE SAME, SAID PARTICLES OF REFLECTIVE AGGREGATE COMPRISING A RIGID CORE MEMBER, AND AN ADHERENT COATING OVER SAID CORE MEMBER, SAID COATING COMPRISING A LIGHT-RETURNING LAYER OF SMALL TRNSPARAENT SPHERE-LENSES WITH INTERNAL SPECULAR LIGHT-REFLECTING MEANS UNDERLYING SAID SPHERE-LENSES AND IN OPTICAL CONNECTION WITH THE BACK EXTREMITY THEREOF SO AS TO PRODUCE REFLEX REFLECTION OF LIGHT DIRECTED UPON SAID AGGREGATE, REGARDLESS OF THE ANGLE OF INCIDENCE OF SAID DIRECTED LIGHT, SAID SPHERE-LENSES HAVING A REFRACTIVE INDEX OF AT LEAST 1.7.
Claim 2
Dependent Claim
116 words
INDIVIDUAL PARTICLES OF REFLECTIVE AGGREGATE HAVING AN AVERAGE DIAMETER NOT OVER ONE-HALF INCH, EACH HANDLEABLE AS A SEPARATE ARTICLE AND BEING ADAPTED FOR USE IN PROVIDING MARKERS OF EFFICIENT REFLEX REFLECTION OF INCIDENT BEAMS OF LIGHT STRIKING THE SAME, SAID PARTICLES OF REFLECTIVE AGGREGATE COMPRISING A RIGID CORE MEMBER, AND AN ADHERENT COATING OVER SAID CORE MEMBER, SAID COATING COMPRISING A LIGHT-RETURNING LAYER OF SMALL TRNSPARAENT SPHERE-LENSES WITH INTERNAL SPECULAR LIGHT-REFLECTING MEANS UNDERLYING SAID SPHERE-LENSES AND IN OPTICAL CONNECTION WITH THE BACK EXTREMITY THEREOF SO AS TO PRODUCE REFLEX REFLECTION OF LIGHT DIRECTED UPON SAID AGGREGATE, REGARDLESS OF THE ANGLE OF INCIDENCE OF SAID DIRECTED LIGHT, SAID SPHERE-LENSES HAVING A REFRACTIVE INDEX OF AT LEAST 1.7.
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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) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |