Patent US4422878A successfully refreshed from Google Patents.
US4422878A
Expired / Lapsed
US
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Asphalt compositions
Assignee: FiberVisions Inc
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Filing: 1982-11-29
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Granted: 1983-12-27
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Expires: 2002-11-29
Abstract
Abstract Paving mixtures are disclosed comprised of paving grade asphalt containing about 4 to 10% by weight of a fibrous filler and 2.5 to 15% by weight of a mixture of eighteen carbon fatty acids containing up to about 30% by weight of rosin.
Inventors
- 👤 Frank R. Fry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:25
CPC Classifications
C; C08; C08L; C08L95/00; E; E01; E01C; E01C11/00; E01C11/16; E01C11/165; E01C7/00; E01C7/08; E01C7/18; E01C7/26; E01C7/262
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
55 words
An asphalt composition containing a reinforcing amount up to about 10% by weight of fibrous filler and (b) a fatty acid portion comprising a mixture of about 2.5 to 15% by weight of straight chain eighteen carbon unsaturated fatty acid and rosin in an active amount not exceeding about 30% by weight of the acid.
Claim 2
Dependent Claim
55 words
An asphalt composition containing a reinforcing amount up to about 10% by weight of fibrous filler and (b) a fatty acid portion comprising a mixture of about 2.5 to 15% by weight of straight chain eighteen carbon unsaturated fatty acid and rosin in an active amount not exceeding about 30% by weight of the acid.
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein the fibrous filler is polypropylene staple fiber.
Claim 4
Dependent Claim
19 words
The composition of claim 1 containing about 2.5 to 10% by weight of eighteen carbon unsaturated fatty acid mixture.
Claim 5
Dependent Claim
17 words
The composition of claim 3 wherein fibrous filler comprises about 4 to 10% by weight polypropylene fiber.
Claim 6
Dependent Claim
50 words
The composition of claim 1 as a blend of polypropylene fibrous filler and an eighteen carbon fatty acid mixture wherein the ratio of fatty acid-to-fiber is between about 30/70 and 60/40 and the fatty acid is comprised of about 70 to 100% by weight of mono- and di- unsaturated acid.
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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) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |