Patent US2876208A successfully refreshed from Google Patents.
US2876208A
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Phenolic resin compositions containing a metal chelate and glass fiber impregnated therewith
Assignee: Shell Development Co
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Filing: 1954-03-18
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Granted: 1959-03-03
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Expires: 1974-03-18
Abstract
No abstract record available.
Inventors
- 👤 Naps Marguerite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:02
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/70; C08K; C08K5/00; C08K5/0091; C08L; C08L63/00; C09; C09J; C09J7/00; C09J7/20; C09J7/21; C09J7/30; C09J7/35; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31525; Y10T428/31678; Y10T428/31688; Y10T442/00; Y10T442/20; Y10T442/2631
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A COMPOSITION COMPRISING A METAL CHELATE IN ADMIXTURE WITH A PHENOL-ALDEHYDE CONDENSATE CONTAINING REACTIVE HYDROXYL GROUPS AND A GLYCIDYL POLYETHER OF A POLYHYDRIC PHENOL HAVING AN EPOXY EQUIVALENCY GREATER THAN 1.0, THE METAL IN SAID CHELATE HAVING AN IONIC VALENCE OF 2 TO 6, INCLUSIVE, AND A COORDINATION NUMBER OF 4 TO 6, INCLUSIVE.
Claim 2
Dependent Claim
54 words
A COMPOSITION COMPRISING A METAL CHELATE IN ADMIXTURE WITH A PHENOL-ALDEHYDE CONDENSATE CONTAINING REACTIVE HYDROXYL GROUPS AND A GLYCIDYL POLYETHER OF A POLYHYDRIC PHENOL HAVING AN EPOXY EQUIVALENCY GREATER THAN 1.0, THE METAL IN SAID CHELATE HAVING AN IONIC VALENCE OF 2 TO 6, INCLUSIVE, AND A COORDINATION NUMBER OF 4 TO 6, INCLUSIVE.
References Cited (Backward Citations)
US2521911A
Cited
US2650184A
Cited
US2516030A
Cited
GB677733A
Cited
US2615860A
Cited
US2582795A
Cited
US2659708A
Cited
AT174135B
Cited
DE875980C
Cited
US2659711A
Cited
US2819233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |