Patent US6305378B1 successfully refreshed from Google Patents.
US2839490A
Expired / Lapsed
US
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Polyester-monomer solutions catalyzed with aralkylene oxides and process for making same
Assignee: Akzo Nobel Paints LLC
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Filing: 1956-02-23
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Granted: 1958-06-17
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Expires: 1976-02-23
Abstract
No abstract record available.
Inventors
- 👤 Leonard C Grotz
- 👤 Gundersen F Carol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:40
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE METHOD OF ACCELERATING THE GELATION AND CURE OF A 100% POLYMERIZABLE LIQUID MIXTURE WHOSE PRINCIPA POLYMERIZABLE COMPONENTS ARE COMPOSED ESSENTIALLY OF A HOMOGENEOUS SOLUTION OF (A) UNSATURATED ALKYD RESIN WHOSE MOLECULES CONTAIN A PLURALITY OF POLYMERIZABLYREACTIVE $2,3-ENEDIOYL GROUPS AND (B) COPOLYMERIZABLE ETHYLENICALLY-UNSATURATED LIQUID MONOMERIC MATERIAL, SAID METHOD COMPRISING THE STEP OF ADDING TO SAID POLYMERIZABLE LIQUID MIXTURE A SMALL EFFECTIVE AMOUNT AROUND 0.5% UP TO 15% BY WEIGHT THEREON OF AT LEAST ONE ORGANIC OXIDE HAVING THE GENERAL FORMULA
Claim 2
Independent Claim
80 words
THE METHOD OF ACCELERATING THE GELATION AND CURE OF A 100% POLYMERIZABLE LIQUID MIXTURE WHOSE PRINCIPA POLYMERIZABLE COMPONENTS ARE COMPOSED ESSENTIALLY OF A HOMOGENEOUS SOLUTION OF (A) UNSATURATED ALKYD RESIN WHOSE MOLECULES CONTAIN A PLURALITY OF POLYMERIZABLYREACTIVE $2,3-ENEDIOYL GROUPS AND (B) COPOLYMERIZABLE ETHYLENICALLY-UNSATURATED LIQUID MONOMERIC MATERIAL, SAID METHOD COMPRISING THE STEP OF ADDING TO SAID POLYMERIZABLE LIQUID MIXTURE A SMALL EFFECTIVE AMOUNT AROUND 0.5% UP TO 15% BY WEIGHT THEREON OF AT LEAST ONE ORGANIC OXIDE HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US1988529A
Cited
US2255313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |