Patent US3318856A successfully refreshed from Google Patents.
US3318856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of gelling polyvinyl alcohol
Assignee: EIDP Inc
•
Filing: 1964-04-03
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Granted: 1967-05-09
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Expires: 1984-04-03
Abstract
No abstract record available.
Inventors
- 👤 Alden J Deyrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:06
CPC Classifications
C; C08; C08F; C08F8/00; C08L; C08L29/00; C08L29/02; C08L29/04; C08F2810/00; C08F2810/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
PROCESS FOR PREPARING A GEL STRUCTURE WHICH COMPRISES ADMIXING (I) AN AQUEOUS SOLUTION CONTAINING 1 TO 20 WEIGHT PERCENT POLYVINYL ALCOHOL, A DISSOLVED TITANIUM OXALATE COMPLEX HAVING THE EMPIRICAL FORMULA
Claim 2
Dependent Claim
30 words
PROCESS FOR PREPARING A GEL STRUCTURE WHICH COMPRISES ADMIXING (I) AN AQUEOUS SOLUTION CONTAINING 1 TO 20 WEIGHT PERCENT POLYVINYL ALCOHOL, A DISSOLVED TITANIUM OXALATE COMPLEX HAVING THE EMPIRICAL FORMULA
References Cited (Backward Citations)
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US2870181A
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US2938812A
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US2720468A
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US3017282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |