US3767729A
Expired / Lapsed
US
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Benzylidene sorbitols as unsaturated polyester composition thickeners
Assignee: New Japan Chemical Co Ltd
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Filing: 1972-02-14
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Granted: 1973-10-23
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Expires: 1992-02-14
Abstract
Abstract IN PRODUCING A SHAPED PRODUCT OF AN UNSATURATED POLYESTER RESIN BY SHAPING A COMPOSITION OF AN UNSATURATED POLYESTER DISSOLVED IN A VINYL MONOMER AND CURING THE SHAPED COMPOSITION, A METHOD WHICH IS CHARACTERIZED IN THAT AT LEAST ONE OF MONO-, DI- AND TRI-BENZYLIDENE SORBITOLS IS ADDED TO SAID COMPOSITION IN A CONCENTRATION OF 0.3 TO 10 WEIGHT PERCENT.
Inventors
- 👤 K Murai
- 👤 Y Choshi
- 👤 T Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:17
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/156; C08K5/1575
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |