Patent US2623865A successfully refreshed from Google Patents.
US2623865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions capable of hardening rapidly in the cold containing phenol-formaldehyde resins
Assignee: Hoechst AG
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Filing: 1950-10-06
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Granted: 1952-12-30
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Expires: 1970-10-06
Abstract
No abstract record available.
Inventors
- 👤 Dietz Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:44
CPC Classifications
C; C08; C08K; C08K13/00; C08K13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
COMPOSITIONS CAPABLE OF HARDENING RAPIDLY IN THE COLD TO YIELD CHEMICALLY RESISTANT MASSES, COMPRISING A FILLIGN AGENT, A STILL LIQUID CONDENSATION PRODUCT OBTAINED BY CONDENSING, IN AN ALKALINE MEDIUM, FORMALDEHYDE AND PHENOL, A HARDENING AGENT FOR SAID CONDENSATION PRODUCT, AND AN ARYLOXY-COMPOUND DISTILLED FROM A MASS OBTAINED BY HEATING UNDER REFLUX FOR ABOUT TWO HOURS ABOUT 108 PARTS BY WEIGHT OF PARA-CRESOL WITH ABOUT 92.5 PARTS BY WEIGHT OF EPICHLOROHYDRIN IN AN ALKALINE MEDIUM.
Claim 2
Dependent Claim
74 words
COMPOSITIONS CAPABLE OF HARDENING RAPIDLY IN THE COLD TO YIELD CHEMICALLY RESISTANT MASSES, COMPRISING A FILLIGN AGENT, A STILL LIQUID CONDENSATION PRODUCT OBTAINED BY CONDENSING, IN AN ALKALINE MEDIUM, FORMALDEHYDE AND PHENOL, A HARDENING AGENT FOR SAID CONDENSATION PRODUCT, AND AN ARYLOXY-COMPOUND DISTILLED FROM A MASS OBTAINED BY HEATING UNDER REFLUX FOR ABOUT TWO HOURS ABOUT 108 PARTS BY WEIGHT OF PARA-CRESOL WITH ABOUT 92.5 PARTS BY WEIGHT OF EPICHLOROHYDRIN IN AN ALKALINE MEDIUM.
References Cited (Backward Citations)
US2258546A
Cited
US2390198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |