Patent US3494939A successfully refreshed from Google Patents.
US3494939A
Expired / Lapsed
US
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Glycidoxy - bisnuclear - phenolic ethers of oxa-substituted aliphatic diols and triols
Assignee: 3M Co
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Filing: 1967-09-25
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Granted: 1970-02-10
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Expires: 1987-09-25
Abstract
No abstract record available.
Inventors
- 👤 Carl M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:20
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/30; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/063; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/331; C08G65/332; C08G65/3322; C08G65/334; C08G65/3344; C08G65/3346
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3145191A
Cited
US3374204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |