US3308144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4, 4'-bis(triorganosilyl)diphenylalkylamines
Assignee: Dow Silicones Corp
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Filing: 1963-06-17
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Granted: 1967-03-07
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Expires: 1983-06-17
Abstract
No abstract record available.
Inventors
- 👤 Matthew J Napoli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:58
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/141; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081; C10; C10M; C10M3/00; C10M2207/00; C10M2207/28; C10M2207/30; C10M2227/00; C10M2227/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A COMPOUND OF THE FORMULA (R)3-SI-(1,4-PHENYLENE)-N(-R'')-(1,4-PHENYLENE)-SI(-R)3 WHEREIN R IS A MONOVALENT HYDROCARBON GROUP FREE OF ALIPHATIC UNSATURATION CONTAINING FROM 1 TO 18 INCLUSIVE CARBON ATOMS AND R'' IS AN ALKYL GROUP CONTAINING FROM 1 TO 18 INCLUSIVE CARBON ATOMS.
Claim 2
Dependent Claim
39 words
A COMPOUND OF THE FORMULA (R)3-SI-(1,4-PHENYLENE)-N(-R'')-(1,4-PHENYLENE)-SI(-R)3 WHEREIN R IS A MONOVALENT HYDROCARBON GROUP FREE OF ALIPHATIC UNSATURATION CONTAINING FROM 1 TO 18 INCLUSIVE CARBON ATOMS AND R'' IS AN ALKYL GROUP CONTAINING FROM 1 TO 18 INCLUSIVE CARBON ATOMS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |