Patent US2540981A successfully refreshed from Google Patents.
Patent US2574971A successfully refreshed from Google Patents.
US2574971A
Expired / Lapsed
US
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Highway marking paint containing glass beads
Assignee: 3M Co
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Filing: 1945-10-26
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Granted: 1951-11-13
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Expires: 1965-10-26
Abstract
No abstract record available.
Inventors
- 👤 Heltzer Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:19
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A QUICK-DRYING REFLECTIVE HIGHWAY MARKING PAINT ESSENTIALLY COMPRISING A DRYING-OIL-BASE VARNISH CONTAINING A BRILLIANTLY REFLECTIVE PIGMENT AND ADDITIONALLY CONTAINING MAGNESIUM SILICATE PIGMENT ADAPTED TO PROVIDE A FALSE-BODY, THE PIGMENT VOLUME RATIO BEING ABOUT 25 TO 45%, AND A SUSPENDED ADMIXTURE OF TRANSPARENT GLASS BEADS HAVING AN AVERAGE DIAMETER OF THE ORDER OF ABOUT 3 TO ABOUT 10 MILS AND PRESENT IN THE PROPORTION OF ABOUT 3 TO 8 POUNDS PER GALLON OF BEAD-FREE PAINT, THE BEADED PAINT BEING ADAPTED TO BE SPRAYED ON HIGHWAY SURFACES SUBJECT TO VEHICULAR TRAFFIC TO PROVIDE DURABLE REFLEX LIGHT-REFLECTIVE TRAFFIC MARKERS WHICH HAVE A HIGH NIGHT-TIME VISIBILITY TO MOTORISTS.
Claim 2
Dependent Claim
104 words
A QUICK-DRYING REFLECTIVE HIGHWAY MARKING PAINT ESSENTIALLY COMPRISING A DRYING-OIL-BASE VARNISH CONTAINING A BRILLIANTLY REFLECTIVE PIGMENT AND ADDITIONALLY CONTAINING MAGNESIUM SILICATE PIGMENT ADAPTED TO PROVIDE A FALSE-BODY, THE PIGMENT VOLUME RATIO BEING ABOUT 25 TO 45%, AND A SUSPENDED ADMIXTURE OF TRANSPARENT GLASS BEADS HAVING AN AVERAGE DIAMETER OF THE ORDER OF ABOUT 3 TO ABOUT 10 MILS AND PRESENT IN THE PROPORTION OF ABOUT 3 TO 8 POUNDS PER GALLON OF BEAD-FREE PAINT, THE BEADED PAINT BEING ADAPTED TO BE SPRAYED ON HIGHWAY SURFACES SUBJECT TO VEHICULAR TRAFFIC TO PROVIDE DURABLE REFLEX LIGHT-REFLECTIVE TRAFFIC MARKERS WHICH HAVE A HIGH NIGHT-TIME VISIBILITY TO MOTORISTS.
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) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |