US2854428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain polyepoxide-modified oxyalkylated phenol-aldehyde resins and method of making same
Assignee: Baker Petrolite LLC
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Filing: 1956-06-15
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Granted: 1958-09-30
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Expires: 1976-06-15
Abstract
No abstract record available.
Inventors
- 👤 Groote Melvin De
- 👤 Shen Kwan-Ting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:55
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE METHOD OF REACTING (A) AN OXYALKYLATED PHENOL-ALDEHYDE RESIN CONTAINING A PLURALITY OF ACTIVE HYDROGEN ATOMS, AND (B) A NON-ARYL HYDROPHILE POLYEPOXIDE CONTAINING AT LEAST TWO 1,2-EPOXY RINGS AND HAVING TWO TERMINAL 1,2-EPOXY RINGS OBTAINED BY REPLACEMENT OF AN OXYGEN-LINKED HYDROGEN ATOM IN A WATERSOLUBLE POLYHYDRIC ALCOHOL BY THE RADICAL
Claim 2
Independent Claim
50 words
THE METHOD OF REACTING (A) AN OXYALKYLATED PHENOL-ALDEHYDE RESIN CONTAINING A PLURALITY OF ACTIVE HYDROGEN ATOMS, AND (B) A NON-ARYL HYDROPHILE POLYEPOXIDE CONTAINING AT LEAST TWO 1,2-EPOXY RINGS AND HAVING TWO TERMINAL 1,2-EPOXY RINGS OBTAINED BY REPLACEMENT OF AN OXYGEN-LINKED HYDROGEN ATOM IN A WATERSOLUBLE POLYHYDRIC ALCOHOL BY THE RADICAL
References Cited (Backward Citations)
US2521912A
Cited
US2498656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |