Patent US2607750A successfully refreshed from Google Patents.
US2607750A
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US
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Coprecipitation of thermoplastic resinous materials with cationic reaction product of polyfunctional amino compounds and aldehydes
Assignee: Wyeth Holdings LLC
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Filing: 1947-12-26
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Granted: 1952-08-19
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Expires: 1967-12-26
Abstract
No abstract record available.
Inventors
- 👤 Lucius H Wilson
- 👤 Chester G Landes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:13
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/20; C08L61/22; C08J; C08J3/00; C08J3/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A PROCESS WHICH COMPRISES MIXING TETRAETHYLENEPENTAMIE-UREA-FORMALDEHYDE RESIN WITH AN AQUEOUS DISPERSION OF A SYNTHETIC WATER-INSOLUBLE NON-CATIONIC THERMOPLASTIC RESIN, WHEREBY SAID DISPERSION IS FLOCCULATED AND SAID TETRAETHYLENEPENTAMINE RESIN IS CO-PRECIPITATED THEREWITH.
Claim 2
Dependent Claim
30 words
A PROCESS WHICH COMPRISES MIXING TETRAETHYLENEPENTAMIE-UREA-FORMALDEHYDE RESIN WITH AN AQUEOUS DISPERSION OF A SYNTHETIC WATER-INSOLUBLE NON-CATIONIC THERMOPLASTIC RESIN, WHEREBY SAID DISPERSION IS FLOCCULATED AND SAID TETRAETHYLENEPENTAMINE RESIN IS CO-PRECIPITATED THEREWITH.
References Cited (Backward Citations)
US2334545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |