US3700604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid catalyst system for furan resins of filler containing acid salts
Assignee: Ameron Inc
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Filing: 1969-05-05
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Granted: 1972-10-24
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Expires: 1989-05-05
Abstract
Abstract POWDERED ACIDIC CATALYST FOR FURAN RESINS IS FORMED IN SITU ON POWDERED INERT FILLER MATERIAL WHICH MAY OR MAY NOT CONTAIN A POWDERED COCATALYST DISPERSED THEREIN. THE ACIDIC CATALYST IS A SALT OF A STRONG ACID. IN SITU FORMATION OF THE ACIDIC SALT IS OBTAINED BY BLENDING THE ACID AND BASE INTO THE FILLER, AND UNIFORM, HOMOGENOUS DISPERSION OF THE SALT IS EFFECTED BY BLENDING ONE OF THEM, AS A LIQUID, INTO THE FILLER WHEREAFTER THE OTHER IS ADDED, AS A LIQUID, INTO THE BLEND TO PRODUCE A DRY POWDER WHICH IS THE ACIDIC CATALYST FORMED ON AND DISPERSED UNIFORMLY THROUGHOUT THE FILLER.
Inventors
- 👤 Ignatius Metil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:52
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/14; B; B01; B01J; B01J31/00; B01J31/02; B01J31/0215; B01J31/0225; B01J31/0234; B01J31/0235; B01J31/0254
Claims Analysis
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References Cited (Backward Citations)
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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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |