US5149584A
Expired / Lapsed
US
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Carbon fiber structures having improved interlaminar properties
Assignee: Individual
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Filing: 1990-10-23
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Granted: 1992-09-22
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Expires: 2010-10-23
Abstract
Abstract A carbon fiber structure suitable for use in high performance composites which structure is characterized by a primary carbon fiber structure having carbon filaments grown therefrom, wherein substantially all of the filaments are in the form selected from branched, spiral, helical, or a combination thereof. The carbon filaments are grown from the carbon fibers by use of an alloy catalyst comprises of a first metal selected from Group IB of the Periodic Table of the Elements, and one or more metals from a second group of metals selected from iron, nickel, cobalt, and zinc; and optionally a metal from a third group of metals selected from titanium, tungsten, tin and tantalum.
Inventors
- 👤 R. Terry K. Baker
- 👤 Nelly M. Rodriguez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:54
CPC Classifications
B; B82; B82Y; B82Y30/00; C; C04; C04B; C04B35/00; C04B35/71; C04B35/78; C04B35/80; C04B35/83; B01; B01D; B01D2253/00; B01D2253/30; B01D2253/302; B01D2253/304; B01D2253/306; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/30; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/627; Y10T442/63
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
68 words
A high performance composite material comprised of: (a) a carbon fiber structure comprised of a primary structure of carbon fibers having grown therefrom, carbon filaments, which structure is characterized as: (i) having a crystallinity greater than about 75%; and (ii) having substantially all of the filaments in a form selected from branched, spiral, helical, or a combination thereof; and (b) a matrix material selected from plastics and carbon.
Claim 2
Dependent Claim
68 words
A high performance composite material comprised of: (a) a carbon fiber structure comprised of a primary structure of carbon fibers having grown therefrom, carbon filaments, which structure is characterized as: (i) having a crystallinity greater than about 75%; and (ii) having substantially all of the filaments in a form selected from branched, spiral, helical, or a combination thereof; and (b) a matrix material selected from plastics and carbon.
Claim 3
Dependent Claim
15 words
The composite material of claim 1 wherein the carbon fiber structure is substantially all graphitic.
Claim 4
Dependent Claim
12 words
The composite material of claim 2 wherein the matrix material is carbon.
Claim 5
Dependent Claim
16 words
The composite material of claim 2 wherein the matrix material is a thermoplastic or thermosetting plastic.
Claim 6
Dependent Claim
21 words
The composite material of claim 4 wherein the plastic is a themoplastic selected from the group consisting of polytetrafluoroethylene and polyetheretherketone.
Claim 7
Dependent Claim
25 words
The composite material of claim 4 wherein the plastic is a thermosetting plastic selected from the epoxies, polyamideimide, polyphenylene sulfide, polysulfone, polyethesulfone, polyetherimide, and polyetheretherketone.
References Cited (Backward Citations)
US4663230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-22 | 1996-03-23 | 1996-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-22 | 2000-03-23 | 2000-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-22 | 2004-03-23 | 2004-09-22 | $7700.00 | Window Closed / Lapsed |