Patent US3551830A successfully refreshed from Google Patents.
US3551830A
Expired / Lapsed
US
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Glossy microporous sheet material
Assignee: EIDP Inc
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Filing: 1968-10-22
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Granted: 1970-12-29
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Expires: 1988-10-22
Abstract
No abstract record available.
Inventors
- 👤 George R Hodge
- 👤 Angelos Vlasus Patsis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:36
CPC Classifications
C; C14; C14C; C14C11/00; C14C11/003; C14C11/006; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/61; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249978; Y10T428/249994; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31; Y10T428/31504; Y10T428/31551; Y10T428/31554; Y10T428/31558; Y10T428/31573; Y10T428/3158; Y10T428/31598; Y10T442/00; Y10T442/20; Y10T442/2139
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) | 1973-12-28 | 1974-06-29 | 1974-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-28 | 1978-06-29 | 1978-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-28 | 1982-06-29 | 1982-12-29 | $7700.00 | Window Closed / Lapsed |