US2773853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing stoving lacquers from dimethylol derivative of a diurethane
Assignee: HERBIG HAARHAUS AG LACKFABRIK
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Filing: 1952-05-27
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Granted: 1956-12-11
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Expires: 1972-05-27
Abstract
No abstract record available.
Inventors
- 👤 Weihe Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:53
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
PROCESS FOR PRODUCING A RESIN TO BE UTILLIZED AS A STOVING LACQUER, COMPRISING PREPARING AN AQUEOUS SOLUTION OF A DIMETHYLOL, DERIVATIVE OF A DIURETHANE, MIXING SAID SOLUTION WITH AT LEAST A SINGLE ORGANIC SOLVENT AS AN AZEOTROPIC AGENT, ADJUSTING THE MIXTURE TO AN ACIDIC PH VALUE, SUBJECTING THE MIXTURE TO AZEOTROPIC DISTILLATION TO DEHYDRATE THE MIXTURE AND FORM METHYLENE ETHER BRIDGES ACCORDING TO THE FOLLOWING FORMULA
Claim 2
Dependent Claim
66 words
PROCESS FOR PRODUCING A RESIN TO BE UTILLIZED AS A STOVING LACQUER, COMPRISING PREPARING AN AQUEOUS SOLUTION OF A DIMETHYLOL, DERIVATIVE OF A DIURETHANE, MIXING SAID SOLUTION WITH AT LEAST A SINGLE ORGANIC SOLVENT AS AN AZEOTROPIC AGENT, ADJUSTING THE MIXTURE TO AN ACIDIC PH VALUE, SUBJECTING THE MIXTURE TO AZEOTROPIC DISTILLATION TO DEHYDRATE THE MIXTURE AND FORM METHYLENE ETHER BRIDGES ACCORDING TO THE FOLLOWING FORMULA
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) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |