US3419533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane plastics
Assignee: Bayer AG
•
Filing: 1965-12-23
•
Granted: 1968-12-31
•
Expires: 1985-12-23
Abstract
No abstract record available.
Inventors
- 👤 Dieterich Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:41
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0809; C08G18/28; C08G18/30; C08G18/38; C08G18/3855; C08G18/40; C08G18/52; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07; Y10S528/00; Y10S528/903; Y10S528/904; Y10S528/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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BE639107A
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FR1383252A
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BE640789A
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US3338875A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |