US3220970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid-cured furfuryl alcohol or furfuryl alcohol/furfural polymer, with plaster of paris
Assignee: Hoeganaes Dev Co Ltd
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Filing: 1961-10-13
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Granted: 1965-11-30
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Expires: 1981-10-13
Abstract
No abstract record available.
Inventors
- 👤 Carlstrom Borge Ingmar
- 👤 Rumberg Karl-Axel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:55
CPC Classifications
C; C08; C08L; C08L61/00; C08L71/00; C08L71/08; C08L71/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A FURANE PLASTIC COMPOSITION ESPECIALLY SUITABLE AS A COLD SETTING JOINTING MASS COMPRISING AN INTIMATE MIXTURE OF (A) A CONDENSATION PRODUCT SELECTED FROM THE GROUP CONSISTING OF FURFURYL ALCOHOL RESIN AND A CONDENSATION PRODUCT OF FURFURYL ALCOHOL AND UP TO 50% FURFURAL AND (B) A CATALYST CONSISTING OF PLASTER OF PARIS AND A STRONG ACID SELECTED FROM THE GROUP CONSISTING OF SULPHURIC AICD, PARATOLUENE SULPHONIC ACID AND PARATOLUENE SULPHONCHLORIDE, AND (C) A FILLER, THE QUANTITY OF PLASTER OF PARIS AMOUNTING TO 2-30% BY WEIGHT OF THE CONDENSATION PRODUCT IN THE COMPOSITION AND THE ACID BEING ADDED IN AN AMOUNT SUFFICIENT TO CAUSE SETTING OF THE COMPOSITION WITHIN 24 HOURS AT A TEMPERTURE OF 10-60*C.
Claim 2
Dependent Claim
114 words
A FURANE PLASTIC COMPOSITION ESPECIALLY SUITABLE AS A COLD SETTING JOINTING MASS COMPRISING AN INTIMATE MIXTURE OF (A) A CONDENSATION PRODUCT SELECTED FROM THE GROUP CONSISTING OF FURFURYL ALCOHOL RESIN AND A CONDENSATION PRODUCT OF FURFURYL ALCOHOL AND UP TO 50% FURFURAL AND (B) A CATALYST CONSISTING OF PLASTER OF PARIS AND A STRONG ACID SELECTED FROM THE GROUP CONSISTING OF SULPHURIC AICD, PARATOLUENE SULPHONIC ACID AND PARATOLUENE SULPHONCHLORIDE, AND (C) A FILLER, THE QUANTITY OF PLASTER OF PARIS AMOUNTING TO 2-30% BY WEIGHT OF THE CONDENSATION PRODUCT IN THE COMPOSITION AND THE ACID BEING ADDED IN AN AMOUNT SUFFICIENT TO CAUSE SETTING OF THE COMPOSITION WITHIN 24 HOURS AT A TEMPERTURE OF 10-60*C.
References Cited (Backward Citations)
US2471600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |