US3666788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyanoalkylated polyoxyalkylene polyamines
Assignee: Texaco Inc
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Filing: 1969-08-22
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Granted: 1972-05-30
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Expires: 1989-08-22
Abstract
Abstract Cyanoalkylated polyoxyalkylene polyamines of the formula WHEREIN A is a cyano-lower-alkyl radical or hydrogen provided at least one A is a cyano-lower-alkyl radical are useful as coupling agents for polymer formation and as curing agents in sprayed polyurea coatings.
Inventors
- 👤 Richard Lee Rowton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:28
CPC Classifications
C; C07; C07C; C07C255/00; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3838; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5051
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
12 words
A compound according to claim 1 wherein the cyano-lower-alkyl radical is cyanoethyl.
Claim 2
Dependent Claim
9 words
A compound according to claim 2 of the formula
Claim 3
Dependent Claim
9 words
A compound according to claim 2 of the formula
Claim 4
Dependent Claim
9 words
A compound according to claim 2 of the formula
Claim 5
Dependent Claim
12 words
A compound according to claim 1 wherein the cyano-lower-alkyl radical is cyanomethyl.
Claim 6
Dependent Claim
9 words
A compound according to claim 6 of the formula
Claim 7
Dependent Claim
9 words
A compound according to claim 7 of the formula
Claim 8
Dependent Claim
9 words
A compound according to claim 6 of the formula
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |