US5945217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally conductive polytrafluoroethylene article
Assignee: W.L. Gore and Associates Inc
•
Filing: 1997-10-14
•
Granted: 1999-08-31
•
Expires: 2017-10-14
Abstract
Abstract A thermally conductive composite article is provided having a PTFE material or a PTFE matrix material which has disposed therein thermally conductive particles, and a phase change material.
Inventors
- 👤 James R. Hanrahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:23
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/70; H10W40/73; H10W40/735; Y; Y02; Y02E; Y02E60/00; Y02E60/14; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2996; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
32 words
An article comprising: a polytetrafluoroethylene (PTFE) material; thermally conductive particles; and a phase change material capable of storing thermal energy as latent heat of a phase change of said phase change material.
Claim 2
Dependent Claim
32 words
An article comprising: a polytetrafluoroethylene (PTFE) material; thermally conductive particles; and a phase change material capable of storing thermal energy as latent heat of a phase change of said phase change material.
Claim 3
Dependent Claim
18 words
An article comprising: a heat sink; a polytetrafluoroethylene PTFE material; thermally conductive particles; and a phase change material.
Claim 4
Dependent Claim
18 words
An article comprising: a heat sink; a polytetrafluoroethylene PTFE material; thermally conductive particles; and a phase change material.
Claim 5
Dependent Claim
35 words
An article comprising: a heat sink; an electronic component; a polytetrafluoroethylene PTFE material; thermally conductive particles; and a phase change material; wherein the PTFE material is disposed between the heat sink and the electronic component.
Claim 6
Dependent Claim
35 words
An article comprising: a heat sink; an electronic component; a polytetrafluoroethylene PTFE material; thermally conductive particles; and a phase change material; wherein the PTFE material is disposed between the heat sink and the electronic component.
Claim 7
Dependent Claim
33 words
An article comprising: a polytetrafluoroethylene PTFE matrix material; thermally conductive particles; and a phase change material; wherein the thermally conductive particles and the phase change material are disposed within the PTFE matrix material.
Claim 8
Dependent Claim
33 words
An article comprising: a polytetrafluoroethylene PTFE matrix material; thermally conductive particles; and a phase change material; wherein the thermally conductive particles and the phase change material are disposed within the PTFE matrix material.
Claim 9
Dependent Claim
80 words
The article of claims 1, 2, 3, or 4, wherein the thermally conductive particles are selected from a group consisting of: metals; aluminum (Al); copper (Cu); nickel (Ni); silver (Ag); and Zinc (Zn); metal beads; metal powders; metal fibers; metal coated fibers; metal flakes; metal coated metals; metal coated ceramics; metal coated glass bubbles; metal coated glass beads; metal coated flakes; metal coated spheres; zinc oxide; aluminum oxide; boron nitride (BN); aluminum nitride (ALN); diamond powder; and silicon carbide (SiC).
Claim 10
Dependent Claim
45 words
The article of claims 1, 2, 3, or 4, wherein the phase change material is selected from a group consisting of: salt hydrates, naphthalene, crystalline paraffins, non-paraffin organics, beeswax, oxazaline wax, crystalline polymers, high density polyethylene, solid polyhydric alcohols, fatty acids, and fatty acid esters.
Claim 11
Dependent Claim
45 words
The article of claims 1, 2, 3, or 4, wherein the phase change material is a material which changes state from a solid to a liquid or from a liquid to a solid within a temperature range of about 10° C. to about 90° C.
Claim 12
Dependent Claim
31 words
An article comprising: a polytetrafluoroethylene PTFE material; thermally conductive particles; and a phase change material; wherein the thermally conductive particles and the phase change material are disposed within the PTFE material.
Claim 13
Dependent Claim
31 words
An article comprising: a polytetrafluoroethylene PTFE material; thermally conductive particles; and a phase change material; wherein the thermally conductive particles and the phase change material are disposed within the PTFE material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-30 | 2003-03-01 | 2003-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-30 | 2007-03-01 | 2007-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-30 | 2011-03-01 | 2011-08-31 | $7700.00 | Window Closed / Lapsed |