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Patent US3542718A successfully refreshed from Google Patents.
US3542718A
Expired / Lapsed
US
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Urethane compositions
Assignee: Wyandotte Chemicals Corp
•
Filing: 1966-08-15
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Granted: 1970-11-24
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Expires: 1986-08-15
Abstract
No abstract record available.
Inventors
- 👤 Murray Lloyd Davis
- 👤 Bernardas Brizgys
- 👤 Edward S Mylis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:00
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/833; C09; C09D; C09D175/00; C09D175/04; C09D175/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31627
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) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |