US3697355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urea-aldehyde resin adhesive process
Assignee: Hexion Inc
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Filing: 1969-02-06
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Granted: 1972-10-10
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Expires: 1989-02-06
Abstract
Abstract THE INVENTION RLEATES TO THE METHOD OF BONDING WATERPENTRABLE CELLULOSIC SUBSTRATES WITH UREA-ALDEHYDE RESIN ADHESIVES AS ILLUSTRATED BY BONDING OF WOOD FLAKES INTO PARTICLE BOARDS, AND IN PARTICULAR TO A METHOD OF IMPROVING THE EFFECIENCY OF SAID ADHESIVES, WHICH COMPRISES REPLACING FROM ABOUT 1% UP TO ABOUT 35% BY WEIGHT OF THE RESIN SOLIDS BY A SALTS SELECTED FROMTHE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH HALIDES AND MIXTURES THEREOF; AND TO THE RESULTANT PRODUCTS.
Inventors
- 👤 William Raymond Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:34
CPC Classifications
C; C08; C08L; C08L97/00; C08L97/02; C08L61/00; C08L61/20; C08L61/22; C08L61/24; C09; C09J; C09J161/00; C09J161/20; C09J161/22; C09J161/24; C08L2666/00; C08L2666/54
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |