Patent US3053690A successfully refreshed from Google Patents.
US3053690A
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US
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Process for hardening furan resins
Assignee: Spies Hecker GmbH
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Filing: 1959-01-20
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Granted: 1962-09-11
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Expires: 1979-01-20
Abstract
No abstract record available.
Inventors
- 👤 Jaffe Fritz
- 👤 Kaesmacher Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:47
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/24; C08J3/242; B; B05; B05D; B05D1/00; B05D1/36; B05D3/00; B05D3/10; B05D3/102; C08G; C08G65/00; C08G65/34; C08G65/36; C08L; C08L71/00; C08L71/08; C08L71/14; C08J2371/00; C08J2371/08; C08J2371/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
A PROCESS FOR COATING AN ARTICLE WITH FURFURYL ALCOHOL RESINS, WHICH COMPRISES APPLYING TO THE ARTICLE TO BE COATED A PRIMING COAT CONSISTING OF PHENOL RESIN, SPRAYING THE PRIMED ARTICLE WITH A SOLUTION OF AN ACID CATALYST HARDENING AGENT CONSISTING OF ABOUT 97 PARTS OF ETHYL ACETATE AND ABOUT 3 PARTS OF CONCENTRATED SULFURIC ACID, EVAPORATION THE ETHYL ACETATE AND THEREAFTER APPLYING TO THE ARTICLE A COATING OF FURFURYL ALCOHOL RESIN, WHICH RESIN HAS BEEN OBTAINED BY THE CONDENSATION REACTION OF ABOUT 25 PARTS BY WEIGHT OF FURFURYL ALCOHOL, ABOUT 1.5 PARTS BY VOLUME OF WATER AND ABOUT 10 PARTS BY WEIGHT OF AQUEOUS SULFURIC ACID.
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) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |