US3446208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous polyolefin gauze
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1966-06-27
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Granted: 1969-05-27
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Expires: 1986-06-27
Abstract
No abstract record available.
Inventors
- 👤 Tomiichi Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:41
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/24; A61F; A61F13/00; A61F13/01; A61F13/15; A61F13/15577; A61F13/15699; A61L15/28; A61F13/06; A61F13/064; A61F13/069; A61F13/51; A61F13/511; A61F13/512; A61F2013/00089; A61F2013/00157; A61F2013/00217; A61F2013/00361; A61F2013/00365; A61F2013/00519; A61F2013/15821; A61F13/514; A61F13/51401; A61F2013/51409; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1025; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31855; Y10T428/3188
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) | 1972-05-26 | 1972-11-25 | 1973-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-26 | 1976-11-25 | 1977-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-26 | 1980-11-25 | 1981-05-27 | $7700.00 | Window Closed / Lapsed |