Patent US2861895A successfully refreshed from Google Patents.
US2861895A
Expired / Lapsed
US
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Paving composition of low thermal conductivity
Assignee: Standard Oil Co
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Filing: 1955-12-30
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Granted: 1958-11-25
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Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 Harley F Hardman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:15
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/18; E01C7/182; E01D; E01D19/00; E01D19/08; E01D19/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A COMPOSITION COMPRISING 2 TO 25% ASPHALT, 70 TO 97.9% AGGREGATE OF 2-INCH TO LESS THAN 200 MESH, THE GRADATION CONFORMING TO NORMAL PAVING USAGE; 0.1 TO 5% SPHERICAL PARTICLES HAVING A BULK DENSITY OFF 0.01 TO 0.3 G./CC., A LIQUID DISPLACEMENT DENSITY OF 0.05 TO 0.6 G./CC., AND A SIZE RANGE OF 1 MICRON TO 1/8" IN DIAMETER AND AN AVERAGE DIAMETER OF 1 TO 500 MICRONS, EACH OF SAID PARTICLES BEING A DISTINCT, COMPLETE AND SEPARATE ENTITY HAVING A HOLLOW, GAS-FILLED INTERIOR AND AN EXTERIOR OF FILM-FORMING MATERIAL FREE FROM HOLES.
Claim 2
Dependent Claim
93 words
A COMPOSITION COMPRISING 2 TO 25% ASPHALT, 70 TO 97.9% AGGREGATE OF 2-INCH TO LESS THAN 200 MESH, THE GRADATION CONFORMING TO NORMAL PAVING USAGE; 0.1 TO 5% SPHERICAL PARTICLES HAVING A BULK DENSITY OFF 0.01 TO 0.3 G./CC., A LIQUID DISPLACEMENT DENSITY OF 0.05 TO 0.6 G./CC., AND A SIZE RANGE OF 1 MICRON TO 1/8" IN DIAMETER AND AN AVERAGE DIAMETER OF 1 TO 500 MICRONS, EACH OF SAID PARTICLES BEING A DISTINCT, COMPLETE AND SEPARATE ENTITY HAVING A HOLLOW, GAS-FILLED INTERIOR AND AN EXTERIOR OF FILM-FORMING MATERIAL FREE FROM HOLES.
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) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |