Patent JPS6262949A successfully refreshed from Google Patents.
US3385829A
Expired / Lapsed
US
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Polyurethane elastomers
Assignee: Bayer AG
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Filing: 1964-12-07
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Granted: 1968-05-28
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Expires: 1984-12-07
Abstract
No abstract record available.
Inventors
- 👤 Heydkamp Wolfgang
- 👤 Muller Erwin
- 👤 Muhlhausen Cornelius
- 👤 Boden Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:07
CPC Classifications
A; A61; A61B; A61B7/00; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0895; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5024; C08G18/5027; C08G18/5036; C08G18/5045; C08G18/5048; C08G18/65; C08G18/6505; C08G18/6523; C08G18/6529; C08G18/70; C08G18/71; C08G18/714; C08G18/83; C08G18/831; C08G18/832; C08G2150/00; C08G2150/50; Y; Y10; Y10S; Y10S528/00; Y10S528/906; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31558; Y10T428/31569; Y10T428/31591; Y10T428/31605; Y10T428/31678; Y10T428/31692
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) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |