Patent US2599986A successfully refreshed from Google Patents.
US2599986A
Expired / Lapsed
US
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Preparation of homogeneous mixture of asphalt and polystyrene
Assignee: Shell Development Co
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Filing: 1947-08-01
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Granted: 1952-06-10
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Expires: 1967-08-01
Abstract
No abstract record available.
Inventors
- 👤 Goebel Johannes
- 👤 Bakker Pieter
- 👤 Hoogland Jelle Gerrit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:32
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/02; C10C3/026; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L95/00; C09; C09D; C09D125/00; C09D125/02; C09D125/04; C09D125/06; C09D195/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
IN THE PREPARATION OF AN ASPHALT COMPOSITION SUITABLE FOR USE AS A SCRATCH RESISTANT SURFACE COATING, THE STEP COMPRISING HEATING A COMPOSITION CONSISTING ESSENTIALLY OF 60 PARTS OF A MELTED BLOWN BITUMINOUS ASPHALT AND 40 PARTS BY WEIGHT OF POLYSTYRENE FOR ONE HOUR AT 300* C., THE RESULTING PRODUCT BEING HOMOGENEOUS IN CHARACTER.
Claim 2
Dependent Claim
53 words
IN THE PREPARATION OF AN ASPHALT COMPOSITION SUITABLE FOR USE AS A SCRATCH RESISTANT SURFACE COATING, THE STEP COMPRISING HEATING A COMPOSITION CONSISTING ESSENTIALLY OF 60 PARTS OF A MELTED BLOWN BITUMINOUS ASPHALT AND 40 PARTS BY WEIGHT OF POLYSTYRENE FOR ONE HOUR AT 300* C., THE RESULTING PRODUCT BEING HOMOGENEOUS IN CHARACTER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |