Patent US2669552A successfully refreshed from Google Patents.
US2669552A
Expired / Lapsed
US
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Acid-catalyzed furfuryl alcohol resin bonding material
Assignee: Atlas Mineral Products Company of Pennsylvania
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Filing: 1951-10-18
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Granted: 1954-02-16
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Expires: 1971-10-18
Abstract
No abstract record available.
Inventors
- 👤 Raymond B Seymour
- 👤 Robert P Desch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:26
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/14; C08L61/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
A MORTAR COMPRISING A FURFURYL ALCOHOLFORMALDEHYDE RESIN, AND A POWDER INCLUDING A FINELY DIVIDED INERT FILLER, 2 TO 10% BY WEIGHT SULFAMIC ACID AND ACIDIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF 0.3 TO 3% BY WEIGHT OF SULFURIC ACID, 1.5 TO 7% BY WEIGHT SODIUM BISULFATE, 1.5 TO 6% BY WEIGHT PARA-TOLUENE SULFONYL CHLORIDE AND 0.75 TO 4% BY WEIGHT OF AN ALKANE SULFONIC ACID HAVING TWO TO FOURTEEN CARBON ATOMS, THE RATIO OF POWDER TO RESIN BEING IN THE RANGE OF FROM 2.5 TO 1 TO 1 TO 1 BY WEIGHT.
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) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |