Patent EP0754435A1 successfully refreshed from Google Patents.
US3597301A
Expired / Lapsed
US
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Treatment of fibrous reinforcing elements
Assignee: Monsanto Co
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Filing: 1968-01-02
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Granted: 1971-08-03
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Expires: 1988-01-02
Abstract
Abstract DISCLOSED HEREIN ARE SPECIALLY TREATED FIBROUS REINFORCING ELEMENTS WHICH ARE ADAPTED FOR USE AS THE REINFORCING ELEMENT IN FIBRE REINFORCED RESIN COMPOSITES. THE TREATED FIBROUS REINFORCING ELEMENTS PROVIDE RESIN IMPREGNATED FIBER REINFORCED STRUCTURES WHICH EXHIBIT IMPROVED THERMAL STABILITY AND PROLONGED USEFUL LIFE AT ELEVATED TEMPERATURES. IN THE PRACTICE OF THE PRESENT INVENTION THE FIBROUS REINFORCING ELEMENT IS TREATED WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BORIC ACID, PHOSPHORIC ACID, SULFURIC ACID AND THEIR ACID DERIVATIVES AND ESTERS AND SALTS OF THE FOREGOING ACIDS.
Inventors
- 👤 John R Le Blanc
- 👤 Edward Lavin
- 👤 Albert H Markhart
- 👤 Irving Serlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:41
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; C08L79/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31623; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2664; Y10T442/2672; Y10T442/268; Y10T442/2721
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |