US2859125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asphalt roofing composition
Assignee: Panther Oil & Grease Manufacturing Co
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Filing: 1957-05-27
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Granted: 1958-11-04
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Expires: 1977-05-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Uhrmacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:04
CPC Classifications
D; D06; D06N; D06N5/00; C; C08; C08K; C08K3/00; C08K3/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A ROOFING COMPOSITION CONSITING OF AN ASPHALT BLOWN IN THE PRESENCE OF PHOSPHORUS PENTOXIDE AND A SOLVENT COMPRISING A MIXTURE OF XYLENE AND PETROLEUM NAPHTHA.
Claim 2
Dependent Claim
25 words
A ROOFING COMPOSITION CONSITING OF AN ASPHALT BLOWN IN THE PRESENCE OF PHOSPHORUS PENTOXIDE AND A SOLVENT COMPRISING A MIXTURE OF XYLENE AND PETROLEUM NAPHTHA.
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) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |