US2850468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remoistenable adhesive comprising polyvinyl acetate, polyvinyl alcohol and a plasticizer and method of preparation
Assignee: EIDP Inc
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Filing: 1955-04-08
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Granted: 1958-09-02
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Expires: 1975-04-08
Abstract
No abstract record available.
Inventors
- 👤 James W Giggey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:40
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
93 words
THE METHOD OF MAKING AN ADHESIVE COMPOSITION WHICH IS REMOISTENABLE AFTER DRYING WHICH COMPRISES ADDING TO AN AQUEOUS DISPERSION OF POLLYVINYL ACETATE FROM ABOUT 5% TO 20% BY WEIGHT BASED ON SAID POLYVINYL ACETATE OF BUTYL PHTHALYL BUTYL GLYCOLATE, AND AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 3% TO 50% BY WEIGHT BASED ON SAID POLYVINYL ACETATE OF A GRADE OF POLYVINYL ALCOHOL MADE BY THE HYDROLYSIS OF BETWEEN ABOUT 70% AND 95% OF THE ACETATE GROUPS OF POLYVINYL ACETATE, SAID ADHESIVE COMPOSITION CONTAINING FROM ABOUT 20% TO 50% BY WEIGHT OF POLYVINYL ACETATE.
Claim 2
Independent Claim
93 words
THE METHOD OF MAKING AN ADHESIVE COMPOSITION WHICH IS REMOISTENABLE AFTER DRYING WHICH COMPRISES ADDING TO AN AQUEOUS DISPERSION OF POLLYVINYL ACETATE FROM ABOUT 5% TO 20% BY WEIGHT BASED ON SAID POLYVINYL ACETATE OF BUTYL PHTHALYL BUTYL GLYCOLATE, AND AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 3% TO 50% BY WEIGHT BASED ON SAID POLYVINYL ACETATE OF A GRADE OF POLYVINYL ALCOHOL MADE BY THE HYDROLYSIS OF BETWEEN ABOUT 70% AND 95% OF THE ACETATE GROUPS OF POLYVINYL ACETATE, SAID ADHESIVE COMPOSITION CONTAINING FROM ABOUT 20% TO 50% BY WEIGHT OF POLYVINYL ACETATE.
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) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |