US3661874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition of matter
Assignee: 3M Co
•
Filing: 1970-06-05
•
Granted: 1972-05-09
•
Expires: 1990-06-05
Abstract
Abstract A WATER-SOLUBLE RUBBERY POLYMER FORMED BY THE REACTION OF AN EPOXIDIZED WATER-INSOLUBLE NEUTRAL RUBBERY POLYMER AND A WATER-SOLUBLE SECONDARY MONO AMINE.
Inventors
- 👤 Melvin M Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:32
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |