Patent US4569692A successfully refreshed from Google Patents.
US4569692A
Expired / Lapsed
US
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Low thermal expansivity and high thermal conductivity substrate
Assignee: Olin Corp
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Filing: 1983-10-06
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Granted: 1986-02-11
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Expires: 2003-10-06
Abstract
Abstract A composite is provided which is adaptable to be a substrate for an electronic application. The composite comprises first material particles having a coefficient of thermal expansion in the range of about -20×10 -7 to about 50×10 -7 in/in/°C. Second material particles having a coefficient of thermal expansion in the range of about 100×10 -7 to about 200×10 -7 in/in/°C. are mixed with the first material particles. A bonding agent adheres the first and second material particles into a coherent composite having a coefficient of thermal expansion in the range of about 1×10 -7 to about 50×10 -7 in/in/°C.
Inventors
- 👤 Sheldon H. Butt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:37
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/05; B; B22; B22F; B22F1/00; B22F1/09; B22F1/12; B32; B32B; B32B15/00; B32B15/01; B32B15/16; B32B5/00; B32B5/22; B32B5/30; B32B7/00; B32B7/04; B32B7/12; C; C04; C04B; C04B26/00; C04B26/02; C22; C22C; C22C32/00; H05K1/0306; H05K1/0313; H05K1/0353; H05K1/0373; H10; H10W; H10W40/00; H10W40/20; H10W40/25; H10W40/257; H10W40/258; H10W70/00; H10W70/60; H10W70/67; H10W70/69; H10W70/692; B32B2307/00; B32B2307/30; B32B2307/302; B32B2307/70; B32B2307/732; B32B2307/734; B32B2457/00; B32B2457/08; H05K2201/00; H05K2201/02; H05K2201/0203; H05K2201/0206; H05K2201/0209; H05K2201/0215; H05K2201/06; H05K2201/068; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12181; Y10T428/12493; Y10T428/125; Y10T428/12514; Y10T428/12528; Y10T428/24; Y10T428/24942; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
97 words
A composite adapted to be a substrate for an electronic application, comprising a mixture of: first material particles having a coefficient of thermal expansion in the range of about -20×10 -7 to about 50×10 -7 in/in/°C.; second material particles mixed with said first material particles having a coefficient of thermal expansion in the range of about 100×10 -7 to about 200×10 -7 in/in/°C.; and a bonding agent to adhere the first and second material particles into a coherent composite having a coefficient of thermal expansion in the range of about 1×10 -7 to about 50×10 -7 in/in/°C.
Claim 2
Dependent Claim
97 words
A composite adapted to be a substrate for an electronic application, comprising a mixture of: first material particles having a coefficient of thermal expansion in the range of about -20×10 -7 to about 50×10 -7 in/in/°C.; second material particles mixed with said first material particles having a coefficient of thermal expansion in the range of about 100×10 -7 to about 200×10 -7 in/in/°C.; and a bonding agent to adhere the first and second material particles into a coherent composite having a coefficient of thermal expansion in the range of about 1×10 -7 to about 50×10 -7 in/in/°C.
Claim 3
Dependent Claim
24 words
A composite as in claim 1 wherein said composite has a thermal conductivity in the range of about 65 to 230 BTU/ft/ft 2 /hr/°F.
Claim 4
Dependent Claim
25 words
A composite as in claim 2 wherein said first material are particles selected from the group consisting of silica, ceramics, glass, metals and metal alloys.
Claim 5
Dependent Claim
13 words
A composite as in claim 3 wherein said first material is a ceramic.
Claim 6
Dependent Claim
13 words
A composite as in claim 3 wherein said first material is a silica.
Claim 7
Dependent Claim
13 words
A composite as in claim 3 wherein said first material is a glass.
Claim 8
Dependent Claim
20 words
A composite as in claim 1 wherein said bonding agent fills the interstices between the first and second material particles.
Claim 9
Dependent Claim
14 words
A composite as in claim 3 wherein said first material is a metal alloy.
Claim 10
Dependent Claim
14 words
A composite as in claim 8 wherein said first material is a nickel-iron alloy.
Claim 11
Dependent Claim
14 words
A composite as in claim 8 wherein said first material is an iron-nickel-copper alloy.
Claim 12
Dependent Claim
12 words
A composite as in claim 8 wherein said first material is molybdenum.
Claim 13
Dependent Claim
21 words
A composite as in claim 3 wherein said second material is selected from the group consisting of metals and metal alloys.
Claim 14
Dependent Claim
12 words
A composite as in claim 12 wherein said second material is copper.
Claim 15
Dependent Claim
14 words
A composite as in claim 12 wherein said second material is a copper alloy.
Claim 16
Dependent Claim
12 words
A composite as in claim 12 wherein said second material is aluminum.
Claim 17
Dependent Claim
14 words
A composite as in claim 12 wherein said second material is an aluminum alloy.
Claim 18
Dependent Claim
23 words
A composite as in claim 12 wherein said bonding agent is selected from the group consisting of glasses, organic adhesives, ceramics and metals.
Claim 19
Dependent Claim
12 words
A composite as in claim 17 wherein said composite is a strip.
Claim 20
Dependent Claim
21 words
A composite as in claim 18 further including a metallic foil bonded to at least one surface of the composite strip.
Claim 21
Dependent Claim
26 words
A composite as in claim 18 further including a continuous layer of low melting temperature glass coating on at least one surface of the composite strip.
Claim 22
Dependent Claim
13 words
A composite as in claim 17 wherein said bonding agent is a glass.
Claim 23
Dependent Claim
14 words
A composite as in claim 17 wherein said bonding agent is an organic adhesive.
Claim 24
Dependent Claim
13 words
A composite as in claim 17 wherein said bonding agent is a ceramic.
Claim 25
Dependent Claim
13 words
A composite as in claim 17 wherein said bonding agent is a metal.
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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) | 1989-02-10 | 1989-08-12 | 1990-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-10 | 1993-08-12 | 1994-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-10 | 1997-08-12 | 1998-02-11 | $7700.00 | Window Closed / Lapsed |