Patent US3778395A successfully refreshed from Google Patents.
US3778395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing inks comprising a uralkyd
Assignee: Hexion Inc
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Filing: 1972-02-18
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Granted: 1973-12-11
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Expires: 1992-02-18
Abstract
Abstract THIS INVENTION RELATES TO PRINTING INKS DRYING BY OXIDATIVE POLYMERIZATION HAVING A LOW TACK TO VISCOSITY RATIO COMPRISING A COLORING AGENT AND A VEHICLE IN WHICH THE VEHICLE COMPRISES FROM 10% TO 100% OF A MODIFIED URALKYD, SAID URALKYD PREPARED BY THE SEQUENTIAL STEPS OF MAKING AN ALKYD PREPOLYMER, SAID PREPOLYMER BEING THE REACTION PRODUCT OF AN UNSATURATED FATTY ACID OR ESTER THEREOF, A POLYOL AND A POLYCARBOXYLIC ACID AND THEN REACTING THE PREPOLYMER WITH A POLYISOCYANATE.
Inventors
- 👤 G Huelsman
- 👤 R Bell
- 👤 G Rohe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:57
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/102; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4288; Y; Y10; Y10S; Y10S260/00; Y10S260/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |