Patent US3720633A successfully refreshed from Google Patents.
US3720633A
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Polyvinyl alcohol adhesive composition with high wet tack containing a boron compound and a cis 1,2-polyol compound
Assignee: Air Products and Chemicals Inc
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Filing: 1971-04-21
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Granted: 1973-03-13
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Expires: 1991-04-21
Abstract
Abstract DISCLOSED HEREIN IS AN ADHESIVE COMPOSITON WITH HIGH WET TACK, WHICH COMPRISES: (A) A POLYVINYL ALCOHOL RESIN, (B) A WATER SOLUBLE BORON COMPOUND, AND (C) A POLYOL SELECTED FROM THE GROUP CONSISTING OF CIS 1,2-POLYOLS AND CERTAIN 1,3-POLYOLS.
Inventors
- 👤 R Nickerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:51
CPC Classifications
C; C09; C09J; C09J129/00; C09J129/02; C09J129/04; C08; C08L; C08L2666/00; C08L2666/28; C08L2666/34; 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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |