Patent US3433766A successfully refreshed from Google Patents.
US3433766A
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Derivatives of bisphenolic substituted carboxylic acids
Assignee: 3M Co
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Filing: 1967-09-08
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Granted: 1969-03-18
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Expires: 1987-09-08
Abstract
No abstract record available.
Inventors
- 👤 Reynold E Holmen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:19
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C07; C07C; C07C243/00; C07C243/24; C07C243/26; C07C243/30; C07C243/32; C07C69/00; C07C69/66; C07C69/73; C07C69/732; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/34; C08G18/348; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/28; C08G63/00; C08G63/02; C08G63/06; C08G8/00; C08G8/28
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) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |