US4118364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced polyhexamethylene isophthalamide
Assignee: Bayer AG
•
Filing: 1977-07-22
•
Granted: 1978-10-03
•
Expires: 1997-07-22
Abstract
Abstract Reinforced amorphous polyamides of isophthalic acid and hexamethylene diamine and articles thereof.
Inventors
- 👤 Werner Nielinger
- 👤 Bert Brassat
- 👤 Hugo Vernaleken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:23
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
22 words
Polyhexamethylene isophthalamides containing from 5 to 50%, based on the mixture of polyamide and reinforcing material, by weight of a reinforcing material.
Claim 2
Dependent Claim
22 words
Polyhexamethylene isophthalamides containing from 5 to 50%, based on the mixture of polyamide and reinforcing material, by weight of a reinforcing material.
Claim 3
Dependent Claim
21 words
Polyhexamethylene isphthalamides as claimed in Claim 1, wherein glass fibres, glass beads or a mixture thereof are used as reinforcing material.
Claim 4
Dependent Claim
27 words
Polyhexamethylene isophthalamides as claimed in claim 1, containing from 20 to 40%, based on the mixture of polyamides and reinforcing material, by weight of the reinforcing material.
Claim 5
Dependent Claim
19 words
Polyhexamethylene isophthalamides as claimed in claim 1, wherein the polyamides have a relative viscosity of from 2.0 to 4.0.
Claim 6
Dependent Claim
11 words
Shaped articles comprising reinforced polyhexamethylene isophthalamides as claimed in claim 1.
Claim 7
Dependent Claim
11 words
Shaped articles comprising reinforced polyhexamethylene isophthalamides as claimed in claim 2.
Claim 8
Dependent Claim
24 words
Polyhexamethylene isophthalamides as claimed in claim 1 wherein the reinforcing material comprises fibers or whiskers of boron, aluminum oxide or carbon or mixtures thereof.
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) | 1981-10-02 | 1982-04-03 | 1982-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-02 | 1986-04-03 | 1986-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-02 | 1990-04-03 | 1990-10-03 | $7700.00 | Window Closed / Lapsed |