Patent US3922284A successfully refreshed from Google Patents.
US3922284A
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N-Substituted aromatic thioetherophthalimides
Assignee: General Electric Co
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Filing: 1973-03-30
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Granted: 1975-11-25
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Expires: 1993-03-30
Abstract
Abstract N-substituted aromatic thioetherimides can be made by effecting reaction between a thiophenoxide and certain derivatives of Nsubstituted aromatic imides. The aromatic thioetherimides can be employed as antioxidants for hydrocarbon greases and as intermediates for making aromatic thioether anhydrides.
Inventors
- 👤 Darrell R Heath
- 👤 Iii Frank J Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:10
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07D221/00; C07D221/02; C07D221/04; C07D221/06; C07D221/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
15 words
An N-substituted aromatic thioetherimide in accordance with claim 1 where R and R1 are phenyl.
Claim 4
Dependent Claim
3 words
The compound N-phenyl-3-phenylthiophthalimide
Claim 5
Dependent Claim
3 words
The compound N-phenyl-3-phenylthiophthalimide
Claim 6
Dependent Claim
3 words
The compound N-butyl-3-phenylthiophthalimide
Claim 7
Dependent Claim
3 words
The compound N-butyl-3-phenylthiophthalimide
Claim 8
Dependent Claim
3 words
The compound N-phenyl-3-(4-hydroxy)phenylthiophthalimide.
Claim 9
Dependent Claim
3 words
The compound N-phenyl-3-(4-hydroxy)phenylthiophthalimide.
Claim 10
Dependent Claim
3 words
The compound N-phenyl-3-methylphenylthiophthalimide.
Claim 11
Dependent Claim
3 words
The compound N-phenyl-3-methylphenylthiophthalimide.
Claim 12
Dependent Claim
3 words
The compound N-phenyl-4-methylphenylthiophthalimide.
Claim 13
Dependent Claim
3 words
The compound N-phenyl-4-methylphenylthiophthalimide.
References Cited (Backward Citations)
US3214441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |