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Patent US3575870A successfully refreshed from Google Patents.
US3575870A
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US
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Curing composition of polyether amines and bis(4 - hydroxyphenyl)dimethylmethane
Assignee: Individual
•
Filing: 1969-03-13
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Granted: 1971-04-20
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Expires: 1989-03-13
Abstract
Abstract A CURING COMPOSITION COMPRISING A POLYETHER AMINE SELECTED FROM THE GROUP CONSISTING OF POLYOXYPROPYLENEDIAMINES, POLYOXPROPYLENETRIAMINES AND POLYOXYTETRAMETHYLENEDIAMINES, AND BISPHENOL-A, A METHOD OF PREPARING SAID CURING COMPOSITIONS, AND CURABLE COMPOSITIONS PREPARED FROM SAID CURING COMPOSITIONS.
Inventors
- 👤 Isao Shimoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:15
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/56; C08G59/504
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |