Patent US3026283A successfully refreshed from Google Patents.
US3026283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decolorizing synthetic resins
Assignee: Wyeth Holdings LLC
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Filing: 1958-03-24
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Granted: 1962-03-20
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Expires: 1978-03-24
Abstract
No abstract record available.
Inventors
- 👤 Jr John Conrad Schlegel
- 👤 Dugliss Charles Hosea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:47
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0091; C08F; C08F12/00; C08F12/02; C08F12/04; C08F12/06; C08F12/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A PROCESS FOR MAKING THE INHERENT YELLOW COLORATION OF A POLYMERIZATION PRODUCT OF AN UNSATURATED MATERIAL SELECTED FROM THE GROUP CONSISTING OF (1) A STYRENE AND (2) A MIXTURE OF AN UNSATURATED, SUBSTANTIALLY LINEAR POLYESTER RESIN PREPARED BY REACTING AN ALPHA, BETAETHYLENICALLY UNSATURATED DICARBOXYLIC ACID AND AN ALIPHATIC DIOL AND A MONOMERIC CROSS-LINKAGE AGENT CONTAINING A CH2=C< GROUP AND HAVING A BOILING POINT IN EXCESS OF 60*C. WHICH COMPRISES COPOLYMERIZING SAID MATERIAL IN THE PRESENCE OF FROM ABOUT 0.0002% TO 0.003% OF A COMBINATION OF ULTRAMARINE BLUE PIGMENT AND 1,5-DIPARATOLUIDINANTHRAQUINONE, SAID PIGMENT AND SAID ANTHRAQUINONE HAVING A WEIGHT RATIO OF FROM ABOUT 20:1 TO 40:1, RESPECTIVELY.
Claim 2
Dependent Claim
106 words
A PROCESS FOR MAKING THE INHERENT YELLOW COLORATION OF A POLYMERIZATION PRODUCT OF AN UNSATURATED MATERIAL SELECTED FROM THE GROUP CONSISTING OF (1) A STYRENE AND (2) A MIXTURE OF AN UNSATURATED, SUBSTANTIALLY LINEAR POLYESTER RESIN PREPARED BY REACTING AN ALPHA, BETAETHYLENICALLY UNSATURATED DICARBOXYLIC ACID AND AN ALIPHATIC DIOL AND A MONOMERIC CROSS-LINKAGE AGENT CONTAINING A CH2=C< GROUP AND HAVING A BOILING POINT IN EXCESS OF 60*C. WHICH COMPRISES COPOLYMERIZING SAID MATERIAL IN THE PRESENCE OF FROM ABOUT 0.0002% TO 0.003% OF A COMBINATION OF ULTRAMARINE BLUE PIGMENT AND 1,5-DIPARATOLUIDINANTHRAQUINONE, SAID PIGMENT AND SAID ANTHRAQUINONE HAVING A WEIGHT RATIO OF FROM ABOUT 20:1 TO 40:1, RESPECTIVELY.
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) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |