US4256506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt composition for asphalt recycle
Assignee: Individual
•
Filing: 1976-10-20
•
Granted: 1981-03-17
•
Expires: 1996-10-20
Abstract
Abstract A liquid asphalt composition comprises a mixture of asphalt and a hydrocarbon having over about 55% by weight aromatic content, which mixture is useful for being added to asphalt-aggregate recycle compositions during processing.
Inventors
- 👤 Robert L. Mendenhall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:29
CPC Classifications
C; C08; C08L; C08L95/00; C08L2555/00; C08L2555/20; C08L2555/22; C08L2555/24; C08L2555/26; C08L2555/30; C08L2555/34; C08L2555/40; C08L2555/50; C08L2555/52; C08L2555/60; C08L2555/70; C08L2555/74; E; E01; E01C; E01C19/00; E01C19/02; E01C19/10; E01C19/1004; E01C19/1059; E01C19/1068; E01C19/1077; F; F28; F28D; F28D11/00; F28D11/02; F28D11/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
49 words
In a process for treating used asphalt-aggregate composition comprising heating and mixing said composition, the improvement comprising adding to said composition a composition consisting essentially of a petroleum hydrocarbon having over 55% aromatics, and asphalt and mixing the resulting composition at a temperature of at least about 200° F.
Claim 2
Dependent Claim
49 words
In a process for treating used asphalt-aggregate composition comprising heating and mixing said composition, the improvement comprising adding to said composition a composition consisting essentially of a petroleum hydrocarbon having over 55% aromatics, and asphalt and mixing the resulting composition at a temperature of at least about 200° F.
Claim 3
Dependent Claim
17 words
The process of claim 1 wherein said petroleum hydrocarbon has a flash point above about 300° F.
Claim 4
Dependent Claim
18 words
The process of claim 2 wherein said petroleum hydrocarbon has an initial boiling point above about 500° F.
Claim 5
Dependent Claim
22 words
The process of claim 1 wherein said asphalt has a viscosity of between about 500 and about 10,000 poise at 60° C.
Claim 6
Dependent Claim
51 words
A process for treating used asphalt-aggregate composition comprising heating and mixing said composition to above about 200° F., adding a composition consisting essentially of a petroleum hydrocarbon having over 55% aromatics and asphalt to said asphalt-aggregate composition, and mixing the resulting composition at a temperature of at least about 200° F.
Claim 7
Dependent Claim
51 words
A process for treating used asphalt-aggregate composition comprising heating and mixing said composition to above about 200° F., adding a composition consisting essentially of a petroleum hydrocarbon having over 55% aromatics and asphalt to said asphalt-aggregate composition, and mixing the resulting composition at a temperature of at least about 200° F.
Claim 8
Dependent Claim
41 words
The process of claims 1 or 5 wherein the amount of said petroleum hydrocarbon and asphalt composition added is sufficient to achieve a asphalt-aggregate composition product having a penetration of between about 25 dmm and about 300 dmm at 77° F.
Claim 9
Dependent Claim
52 words
The process of claims 1 or 5 wherein the amount of said petroleum hydrocarbon and asphalt composition added is sufficient to achieve a asphalt-aggregate composition product having a penetration of between about 25 dmm and about 300 dmm at 77° F., and a ductility of at least 150 cm at 77° F.
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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) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |