Patent JPS5788936A successfully refreshed from Google Patents.
US3249452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Granulated bituminous concrete material and methods of manufacturing and using same
Assignee: Gbc Corp
•
Filing: 1961-11-13
•
Granted: 1966-05-03
•
Expires: 1981-11-13
Abstract
No abstract record available.
Inventors
- 👤 Charles C Plumb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:15
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A METHOD OF PRODUCING A GRANULATED BITUMINOUS CONCRETE MATERIAL COMPRISING THE STEPS OF FORMING A HEATED MIXTURE CONSISTING OF MINERAL AGGREGATE AND A SOFT ASPHALT CEMENT IN LIQUID FORM, SAID MIXTURE HAVING A TEMPERATURE IN EXCESS OF 175*F., THE QUANTITY OF SAID CEMENT BEING SUCH AS TO PROVIDE A BITUMEN CONTENT IN THE MIXTURE OF FROM ABOUT 0.5% TO ABOUT 8% BY WEIGHT OF THE AGGREGATE, AND COOLING SAID HEATED MIXTURE TO APPROXIMATELY ATMOSPHERIC TEMPERATURE BY INTIMATELY CONTACTING THE PARTICLES THEREOF WITH A FLOWING STREAM OF AIR HAVING AN INITIAL TEMPERATURE NOT GREATER THAN ATMOSPHERIC TEMPERATURE WHILE AGITATING THE MIXTURE SO AS TO MAINTAIN THE LATTER IN PARTICULATE FORM, WHEREBY SAID MIXTURE IS CONVERTED INTO A MASS OF DISCRETE NON-ADHERENT BITUMINOUS COATED AGGREATE GRANULES.
Claim 2
Independent Claim
124 words
A METHOD OF PRODUCING A GRANULATED BITUMINOUS CONCRETE MATERIAL COMPRISING THE STEPS OF FORMING A HEATED MIXTURE CONSISTING OF MINERAL AGGREGATE AND A SOFT ASPHALT CEMENT IN LIQUID FORM, SAID MIXTURE HAVING A TEMPERATURE IN EXCESS OF 175*F., THE QUANTITY OF SAID CEMENT BEING SUCH AS TO PROVIDE A BITUMEN CONTENT IN THE MIXTURE OF FROM ABOUT 0.5% TO ABOUT 8% BY WEIGHT OF THE AGGREGATE, AND COOLING SAID HEATED MIXTURE TO APPROXIMATELY ATMOSPHERIC TEMPERATURE BY INTIMATELY CONTACTING THE PARTICLES THEREOF WITH A FLOWING STREAM OF AIR HAVING AN INITIAL TEMPERATURE NOT GREATER THAN ATMOSPHERIC TEMPERATURE WHILE AGITATING THE MIXTURE SO AS TO MAINTAIN THE LATTER IN PARTICULATE FORM, WHEREBY SAID MIXTURE IS CONVERTED INTO A MASS OF DISCRETE NON-ADHERENT BITUMINOUS COATED AGGREATE GRANULES.
References Cited (Backward Citations)
US2017632A
Cited
US2152798A
Cited
US2356870A
Cited
US2444413A
Cited
US2871774A
Cited
US2886459A
Cited
US2977864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |