Patent US3026285A successfully refreshed from Google Patents.
US3026285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing agent comprising the reaction product of an aliphatic polyamine and an aldehyde, and epoxy resin cured therewith
Assignee: Individual
•
Filing: 1959-09-18
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Granted: 1962-03-20
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Expires: 1979-09-18
Abstract
No abstract record available.
Inventors
- 👤 Frank N Hirosawa
- 👤 Delmonte John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:55
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4042; C08L; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A HARDENED EPOXY RESIN PRODUCT CONSISTING ESSENTIALLY OF A 2,2-BIS (4-HYDROXYPHENYL) PROPANE-EPICHLOROHYDRIN EPOXY RESIN AND A HARDENER CONSISTING ESSENTIALLY OF THE SUBSTANTIALLY ANHYDROUS LIQUID REACTION PRODUCT OF ONE MOL OF AN ALIPHATIC POLYAMINE AND AT LEAST ONE MOL OF AN ALDEHYDE, THE EPOXY RESIN AND THE HARDENER BEING PRESENT IN SUBSTANTIALLY STOICHIOMETRIC PROPORTIONS BASED UPON THE EPOXY EQUIVALENT.
Claim 2
Dependent Claim
58 words
A HARDENED EPOXY RESIN PRODUCT CONSISTING ESSENTIALLY OF A 2,2-BIS (4-HYDROXYPHENYL) PROPANE-EPICHLOROHYDRIN EPOXY RESIN AND A HARDENER CONSISTING ESSENTIALLY OF THE SUBSTANTIALLY ANHYDROUS LIQUID REACTION PRODUCT OF ONE MOL OF AN ALIPHATIC POLYAMINE AND AT LEAST ONE MOL OF AN ALDEHYDE, THE EPOXY RESIN AND THE HARDENER BEING PRESENT IN SUBSTANTIALLY STOICHIOMETRIC PROPORTIONS BASED UPON THE EPOXY EQUIVALENT.
References Cited (Backward Citations)
US2511913A
Cited
US2272783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |