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US2806825A
Expired / Lapsed
US
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Asphaltic molding compositions and molded articles containing wood fiber
Assignee: Richardson Co
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Filing: 1952-06-26
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Granted: 1957-09-17
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Expires: 1972-06-26
Abstract
No abstract record available.
Inventors
- 👤 Robert J Wentland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:43
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
AN ACID-RESISTANT MOLDING COMPOSITION COMPRISING AS A FIBROUS REINFORCEMENT SUBSTANTIALLY 13% TO 25% OF EXPLODED WOOD FIBER AND SUNSTANTIALLY 40% TO 13% OF NON-FIBROUS, FINELY DIVIDED, ACID-RESISTANT FILLER, THE BALANCE BEING A BITUMINOUS BINDER.
Claim 2
Dependent Claim
34 words
AN ACID-RESISTANT MOLDING COMPOSITION COMPRISING AS A FIBROUS REINFORCEMENT SUBSTANTIALLY 13% TO 25% OF EXPLODED WOOD FIBER AND SUNSTANTIALLY 40% TO 13% OF NON-FIBROUS, FINELY DIVIDED, ACID-RESISTANT FILLER, THE BALANCE BEING A BITUMINOUS BINDER.
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) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |