US3644568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester compositions
Assignee: Anchor Chemical Co Ltd
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Filing: 1968-10-31
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Granted: 1972-02-22
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Expires: 1988-10-31
Abstract
Abstract AN AIR DRYING SURFACE COATING COMPOSITION, COMPRISING UNSATURATED POLYESTERS, A POLYMER OR COPOLYMER FORMED BY POLYMERISING THE GLYCIDYL ETHER OF A B-UNSATURATED ALCOHOL OF AT LEAST 3 CARBON ATOMS EITHER ALONE OR WITH OTHER OXIRANE COMPOUNDS, AND SMALL QUANTITIES OF METAL SALTS OF ORGANIC ACIDS, SUCH SALTS BEING SOLUBLE IN THE COMPOSITION.
Inventors
- 👤 Colin Tilley
- 👤 David Harris Watson
- 👤 Michael Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:47
CPC Classifications
C; C09; C09D; C09D167/00; C09D167/06; C09D163/00
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |