US2803609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethoxylin resin comositions and process of hardening such resins
Assignee: Hoechst AG Werk Kalle Albert
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Filing: 1953-02-17
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Granted: 1957-08-20
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Expires: 1973-02-17
Abstract
No abstract record available.
Inventors
- 👤 Schlenker Felix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:58
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/681; C08G59/685
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PROCESS FOR PREPARING EPOXY RESIN COMPOSITIONS OF IMPROVED HEAT HARDENING QUALITIES WHICH COMPRISES INCORPORATING A POLYVALENT METAL-CARBOXYLIC ACID SALT DRIER IN AN UNMODIFIED EPOXY RESIN HAVING FREE EPOXY GROUPS, SAID RESIN BEING THE REACTION PRODUCT OF A POLYHYDRIC PHENOL AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DICHLOROHYDRIN AND EPICHLOROHYDRIN.
Claim 2
Dependent Claim
52 words
A PROCESS FOR PREPARING EPOXY RESIN COMPOSITIONS OF IMPROVED HEAT HARDENING QUALITIES WHICH COMPRISES INCORPORATING A POLYVALENT METAL-CARBOXYLIC ACID SALT DRIER IN AN UNMODIFIED EPOXY RESIN HAVING FREE EPOXY GROUPS, SAID RESIN BEING THE REACTION PRODUCT OF A POLYHYDRIC PHENOL AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DICHLOROHYDRIN AND EPICHLOROHYDRIN.
References Cited (Backward Citations)
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Cited
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US2575440A
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US2637621A
Cited
US2596737A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |