Patent US3197429A successfully refreshed from Google Patents.
US3197429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl acetate adhesive mixture
Assignee: Shawinigan Resins Corp
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Filing: 1962-09-21
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Granted: 1965-07-27
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Expires: 1982-09-21
Abstract
No abstract record available.
Inventors
- 👤 James C Baatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:13
CPC Classifications
C; C09; C09J; C09J131/00; C09J131/02; C09J131/04; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/28; C08L29/00; C08L29/02; C08L29/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
AN ADHESIVE COMPOSITION CAPABLE OF FORMING AT 45* F. A CONTINUOUS, NON-CHALKY, WATER REDISPERSIBLE FILM, WHICH COMPRISES: (A) AN AQUEOUS DISPERSION OF POLYVINYL ACETATE IN AMOUN SUFFICIENT TO PROVIDE FROM 18 TO 40% OF POLYVINYL ACETATE INT HE FINAL COMPOSITION; (B) FROM 0.5 TO 5% OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THIOUREA, AMMONIUM THIOCYANATE AND THE ONOVALENT ALKALI METAL THIOCYANATES; (C) FROM 2.5 TO 8% OF POLYVINYL ALCOHOL, IN AQUEOUS SOLUTION, SAID POLYVINYL ALCOHOL HAVING A 20*C. VISCOSITY OF 1 TO 70 CENTIPOISES AS A 4% BY WEIGHT AQUEOUS SOLTUION, AND A RESIDUAL UNHYDROLYZED POLYVINYL ACETATE CONTENT OF LESS THAN 50% BY WEIGHT; AND BORIC ACID IN A WEIGHT RATIO OF BORIC ACID TO THE POLYVINYL ALCOHOL OF 0.03 TO 0.20.
Claim 2
Dependent Claim
124 words
AN ADHESIVE COMPOSITION CAPABLE OF FORMING AT 45* F. A CONTINUOUS, NON-CHALKY, WATER REDISPERSIBLE FILM, WHICH COMPRISES: (A) AN AQUEOUS DISPERSION OF POLYVINYL ACETATE IN AMOUN SUFFICIENT TO PROVIDE FROM 18 TO 40% OF POLYVINYL ACETATE INT HE FINAL COMPOSITION; (B) FROM 0.5 TO 5% OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THIOUREA, AMMONIUM THIOCYANATE AND THE ONOVALENT ALKALI METAL THIOCYANATES; (C) FROM 2.5 TO 8% OF POLYVINYL ALCOHOL, IN AQUEOUS SOLUTION, SAID POLYVINYL ALCOHOL HAVING A 20*C. VISCOSITY OF 1 TO 70 CENTIPOISES AS A 4% BY WEIGHT AQUEOUS SOLTUION, AND A RESIDUAL UNHYDROLYZED POLYVINYL ACETATE CONTENT OF LESS THAN 50% BY WEIGHT; AND BORIC ACID IN A WEIGHT RATIO OF BORIC ACID TO THE POLYVINYL ALCOHOL OF 0.03 TO 0.20.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |