US3481886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl alcohol foams and compositions for making the same
Assignee: EIDP Inc
•
Filing: 1965-11-24
•
Granted: 1969-12-02
•
Expires: 1985-11-24
Abstract
No abstract record available.
Inventors
- 👤 Bernard C Lawes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:24
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0028; C08K; C08K5/00; C08K5/16; C08K5/21; C08K5/36; C08K5/39; C08K5/40; C08J2329/00; C08J2329/02; C08J2329/04
Claims Analysis
Total Claims: 0
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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) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |