US3876618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxazolidinone modified triglycidyl ether of trihydroxy triphenyl methane and derivatives thereof
Assignee: Dow Chemical Co
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Filing: 1973-10-04
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Granted: 1975-04-08
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Expires: 1993-10-04
Abstract
Abstract Novel oxazolidinone modified triglycidyl ethers of trihydroxy triphenyl methane and derivatives thereof are prepared which are useful in molding and adhesive compositions.
Inventors
- 👤 James A Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:57
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4028; C08G18/00; C08G18/003; C08G59/20; C08G59/32; C08G59/3218
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
10 words
AN OXAZOLIDINONE MODIFIED EPOXY RESIN REPRESENTED BY THE GENERAL FORMULA
Claim 2
Dependent Claim
10 words
AN OXAZOLIDINONE MODIFIED EPOXY RESIN REPRESENTED BY THE GENERAL FORMULA
Claim 3
Dependent Claim
12 words
The modified epoxy resin of Claim 1 wherein the polyisocyanate is an
Claim 4
Dependent Claim
12 words
The modified epoxy resin of Claim 1 wherein the polyisocyanate is a
Claim 5
Dependent Claim
12 words
The modified epoxy resin of Claim 2 wherein said diisocyanate is toluene
Claim 6
Dependent Claim
15 words
The modified epoxy resin of Claim 2 wherein Q is hydrogen and each R is
Claim 7
Dependent Claim
15 words
The modified epoxy resin of Claim 3 wherein Q is hydrogen and each R is
Claim 8
Dependent Claim
21 words
The modified epoxy resin of Claim 4 wherein Q is hydrogen and each R is independently hydrogen or a methoxy group.
References Cited (Backward Citations)
US3334110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |