Patent US3010840A successfully refreshed from Google Patents.
US3010840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water repellent aggregate
Assignee: Zonolite Co
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Filing: 1959-06-08
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Granted: 1961-11-28
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Expires: 1979-06-08
Abstract
No abstract record available.
Inventors
- 👤 David C Goff
- 👤 George E Ziegler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:11
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/10; C04B20/1018; C04B20/1029; C04B20/1044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE METHOD OF PRODUCING A WATER REPELLENT AGGREGATE WHICH COMPRISES MIXING AN EXPANDED, DRY LIGHTWEIGHT AGGREGATE AT ROOM TEMPERATURE WITH DRY FINELY DIVIDED BITUMINOUS PARTICLES HAVING A PARTICLE SIZE SUCH THAT AT LEAST 75% WILL PASS THROUGH A 200 MESH SCREEN UNTIL SAID PARTICLES ADHERE TO PARTICLES OF SAID AGGREGATE, THE AMOUNT OF PARTICLES BEING AT LEAST 0.5 POUND PER CUBIC FOOT OF AGGREGATE BUT NOT MORE THAN 75% BY WEIGHT OF THE AGGREGATE, AND HEATING SAID BITUMINOUS PARTICLES TO A TEMPERATURE SUFFICIENT TO FUSE SAID BITUMINOUS PARTICLES ON TO SAID AGGREAGATE PARTICLES, COOLING THE COATED PARTICLES, AND RECOVERING FREE FLOWING COATED AGGREGATE PARTICLES.
Claim 2
Independent Claim
104 words
THE METHOD OF PRODUCING A WATER REPELLENT AGGREGATE WHICH COMPRISES MIXING AN EXPANDED, DRY LIGHTWEIGHT AGGREGATE AT ROOM TEMPERATURE WITH DRY FINELY DIVIDED BITUMINOUS PARTICLES HAVING A PARTICLE SIZE SUCH THAT AT LEAST 75% WILL PASS THROUGH A 200 MESH SCREEN UNTIL SAID PARTICLES ADHERE TO PARTICLES OF SAID AGGREGATE, THE AMOUNT OF PARTICLES BEING AT LEAST 0.5 POUND PER CUBIC FOOT OF AGGREGATE BUT NOT MORE THAN 75% BY WEIGHT OF THE AGGREGATE, AND HEATING SAID BITUMINOUS PARTICLES TO A TEMPERATURE SUFFICIENT TO FUSE SAID BITUMINOUS PARTICLES ON TO SAID AGGREAGATE PARTICLES, COOLING THE COATED PARTICLES, AND RECOVERING FREE FLOWING COATED AGGREGATE PARTICLES.
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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) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |