US4153785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide resins from dilactones
Assignee: Gulf Research and Development Co
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Filing: 1978-04-19
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Granted: 1979-05-08
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Expires: 1998-04-19
Abstract
Abstract This invention relates to novel isometric polyamide resins.
Inventors
- 👤 Johann G. D. Schulz
- 👤 Anatoli Onopchenko
- 👤 Edward T. Sabourin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:33
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C07; C07D; C07D307/00; C07D307/77; C07D307/87; C07D307/88
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
34 words
A poly-N-omega-aminoalkyl[methylene-bis-(2-hydroxymethylbenzamide)] resin selected from the group consisting of ##STR3## wherein y is an integer ranging from about 2 to about 12, and n is an integer ranging from about 20 to about 100.
Claim 2
Dependent Claim
34 words
A poly-N-omega-aminoalkyl[methylene-bis-(2-hydroxymethylbenzamide)] resin selected from the group consisting of ##STR3## wherein y is an integer ranging from about 2 to about 12, and n is an integer ranging from about 20 to about 100.
Claim 3
Dependent Claim
29 words
The polyamide of claim 1 wherein y is an integer ranging from about 2 to about 6 and n is an integer ranging from about 30 to about 80.
Claim 4
Dependent Claim
23 words
The polyamide of claim 1 wherein y is the integer 2 and n is an integer ranging from about 30 to about 80.
Claim 5
Dependent Claim
35 words
The polyamide of claim 1 defined by the following formula: ##STR4## wherein y is an integer ranging from about 2 to about 12 and n is an integer ranging from about 20 to about 100.
Claim 6
Dependent Claim
29 words
The polyamide of claim 4 wherein y is an integer ranging from about 2 to about 6 and n is an integer ranging from about 30 to about 80.
Claim 7
Dependent Claim
23 words
The polyamide of claim 4 wherein y is the integer 2 and n is an integer ranging from about 30 to about 80.
Claim 8
Dependent Claim
35 words
The polyamide of claim 1 defined by the following formula: ##STR5## wherein y is an integer ranging from about 2 to about 12 and n is an integer ranging from about 20 to about 100.
Claim 9
Dependent Claim
28 words
The polyamide of claim 7 wherein y is an integer ranging from about 2 to about 6 and n is integer ranging from about 30 to about 80.
Claim 10
Dependent Claim
23 words
The polyamide of claim 7 wherein y is the integer 2 and n is an integer ranging from about 30 to about 80.
Claim 11
Dependent Claim
35 words
The polyamide of claim 1 defined by the following formula: ##STR6## wherein y is an integer ranging from about 2 to about 12 and n is an integer ranging from about 20 to about 100.
Claim 12
Dependent Claim
29 words
The polyamide of claim 10 wherein y is an integer ranging from about 2 to about 6 and n is an integer ranging from about 30 to about 80.
Claim 13
Dependent Claim
23 words
The polyamide of claim 10 wherein y is the integer 2 and n is an integer ranging from about 30 to about 80.
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) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |