US3028344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed epoxy resins and process of preparing same
Assignee: Individual
•
Filing: 1959-04-21
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Granted: 1962-04-03
•
Expires: 1979-04-21
Abstract
No abstract record available.
Inventors
- 👤 Robert L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:00
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J2363/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A FOAMED EPOXY RESIN OBTAINED BY REACTING (1) AN EPOXY RESIN DERIVED FROM EPICHLOROHYDRIN AND A POLYHYDROXY HYDROCARBON, (2) A CURING AGENT FOR SAID EPOXY RESIN AND (3) AN A-METALLO-METALLIC CONSTITUENTS ARE ACID WHEREIN SAID METALLO AND METALLIC CONSTITUENTS ARE SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS IN ADMIXTURE WITH (4) A FOAMING AGENT SUITABLE FOR PRODUCING FOAMED EPOXY RESINS, SAID FOAMING AGENT BEING UNREACTIVE WITH SAID RESIN, SAID CURING AGENT AND SAID SALT.
Claim 2
Dependent Claim
78 words
A FOAMED EPOXY RESIN OBTAINED BY REACTING (1) AN EPOXY RESIN DERIVED FROM EPICHLOROHYDRIN AND A POLYHYDROXY HYDROCARBON, (2) A CURING AGENT FOR SAID EPOXY RESIN AND (3) AN A-METALLO-METALLIC CONSTITUENTS ARE ACID WHEREIN SAID METALLO AND METALLIC CONSTITUENTS ARE SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS IN ADMIXTURE WITH (4) A FOAMING AGENT SUITABLE FOR PRODUCING FOAMED EPOXY RESINS, SAID FOAMING AGENT BEING UNREACTIVE WITH SAID RESIN, SAID CURING AGENT AND SAID SALT.
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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |