US3527720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy resin compositions including castor oil for flexibility
Assignee: 3M Co
•
Filing: 1969-04-07
•
Granted: 1970-09-08
•
Expires: 1989-04-07
Abstract
No abstract record available.
Inventors
- 👤 Gaylord L Groff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:34
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4292; C08L; C08L63/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2921040A
Cited
US2999824A
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US3078235A
Cited
US3268477A
Cited
US3278456A
Cited
US3296202A
Cited
US3438909A
Cited
US3188362A
Cited
US3350334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |