Patent US2172847A successfully refreshed from Google Patents.
US2963378A
Expired / Lapsed
US
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Ass beads hemispherically reflectorled with metallic coating and compositions thereof
Assignee: 3M Co
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Filing: 1955-04-25
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Granted: 1960-12-06
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Expires: 1975-04-25
Abstract
No abstract record available.
Inventors
- 👤 Philip V Palmquist
- 👤 Warren R Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:28
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/06; C09; C09D; C09D5/00; C09D5/004; G; G02; G02B; G02B5/00; G02B5/12; G02B5/126; G02B5/128; C03C2217/00; C03C2217/20; C03C2217/25; C03C2217/251; C03C2217/252
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
73 words
A LIQUID REFLECTIVE COATING COMPOSITION COMPRISING A MIXTURE OF TRANSPARENT VARNISH SOLUTION VEHICLE AND REFLEX-REFLECTING CATADIOPTRIC PIGMENT CONSISTING OF TRANSPARENT GLASS MICROSPHEROIDS THAT ARE HEMISPHERICALLY REFLECTORIZED BY A METAL COATING, THE INGREDIENTS BEING SELECTED AND PORPORTIONED SUCH THAT THE COMPOSITION CAN BE APPLIED TO A BASE SURFACE TO PROVIDE A DRIED TRANSPARENT VARNISH COATING BONDED THERETO CONTAINING AN INITIALLY OPTICALLY-EXPOSED EMBEDDED LAYER OF TENS OF THOUSANDS OF NON-ORIENTED REFLECTORIZED MICROSPHEROIDS PER SQUARE INCH.
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) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |