US2507199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation products of furfural and monohydroxy benzenes
Assignee: General Electric Co
•
Filing: 1947-03-20
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Granted: 1950-05-09
•
Expires: 1967-03-20
Abstract
No abstract record available.
Inventors
- 👤 Leonard K Eber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:11
CPC Classifications
C; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08G14/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN THE PROCESS FOR EFFECTING CONDENSATION BETWEEN FURFURAL AND A MONONHYDROXYBENZENE SELECTED FROM THE CLASS CONSISTING OF PHENOL, CRESOLS, XYLENOLS, AND MIXTURES THEREOF,, THE IMPROVEMENT FOR INCREASING THE RATE OF CONDENSATION BETWEEN THE REACTANTS WHICH COMPRISES HEATING A MIXTURE OF THE LATTER IN THE PRESENCE OF A PREFORMED METHYLOL MELAMINE SELECTED FROM THE CLASS CONSISTING OF DIMETHYLOL MELAMINE AND TRIMETHYLOL MELAMINE, THE WEIGHT OF THE METHYLOL MELAMINE BEING EQUAL TO FROM 0.5 TO 15 PER CENT, BY WEIGHT, OF THE MONOHYDROXYBENZENE.
Claim 2
Dependent Claim
81 words
IN THE PROCESS FOR EFFECTING CONDENSATION BETWEEN FURFURAL AND A MONONHYDROXYBENZENE SELECTED FROM THE CLASS CONSISTING OF PHENOL, CRESOLS, XYLENOLS, AND MIXTURES THEREOF,, THE IMPROVEMENT FOR INCREASING THE RATE OF CONDENSATION BETWEEN THE REACTANTS WHICH COMPRISES HEATING A MIXTURE OF THE LATTER IN THE PRESENCE OF A PREFORMED METHYLOL MELAMINE SELECTED FROM THE CLASS CONSISTING OF DIMETHYLOL MELAMINE AND TRIMETHYLOL MELAMINE, THE WEIGHT OF THE METHYLOL MELAMINE BEING EQUAL TO FROM 0.5 TO 15 PER CENT, BY WEIGHT, OF THE MONOHYDROXYBENZENE.
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) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |