Patent US3486968A successfully refreshed from Google Patents.
US3486968A
Expired / Lapsed
US
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Microporous polyurethane coatings and films
Assignee: Reeves Brothers Inc
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Filing: 1967-10-12
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Granted: 1969-12-30
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Expires: 1987-10-12
Abstract
No abstract record available.
Inventors
- 👤 Charles E Mater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:47
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0002; B01D67/0023; B01D67/003; C; C08; C08J; C08J9/00; C08J9/26; D; D06; D06N; D06N3/00; D06N3/0002; D06N3/004; D06N3/12; D06N3/14; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249978; Y10T428/26; Y10T428/263
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2707201A
Cited
US2826509A
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US3050432A
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US3000757A
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US2959822A
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US3227603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |