US4532222A
Expired / Lapsed
US
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Reinforced glass composites
Assignee: Olin Corp
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Filing: 1983-03-21
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Granted: 1985-07-30
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Expires: 2003-03-21
Abstract
Abstract Reinforced glass composites are disclosed which are useful in hermetic semiconductor packaging as well as other applications. The disclosed composites include discrete particles in a tin-phosphorous-oxyfluoride glass mixture having a low glass transition temperature to prevent serious degradation of the discrete particles.
Inventors
- 👤 Sheldon H. Butt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:03
CPC Classifications
C; C03; C03C; C03C14/00; C03C14/004; H; H10; H10W; H10W76/00; H10W76/60; C03C2214/00; C03C2214/04; H10W90/00; H10W90/701; H10W90/751; H10W90/756; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/249928; Y10T428/25; Y10T428/254; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2982
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
48 words
A reinforced glass, composite, comprising: about 5% to 25% by volume of discrete particles in a glass matrix, said discrete particles comprising an organic polymer; and said glass matrix being a tin-phosphorous-oxyfluoride composition having a very low glass transition temperature to prevent serious degradation of said discrete particles.
Claim 2
Dependent Claim
48 words
A reinforced glass, composite, comprising: about 5% to 25% by volume of discrete particles in a glass matrix, said discrete particles comprising an organic polymer; and said glass matrix being a tin-phosphorous-oxyfluoride composition having a very low glass transition temperature to prevent serious degradation of said discrete particles.
Claim 3
Dependent Claim
38 words
The composite of claim 1 wherein said glass matrix comprises in weight percent on an elemental basis as calculated from the batch, about 20-85% Sn, 2-20% P, 3-20% O, 10-36% F and at least 75% total of Sn+P+O+F.
Claim 4
Dependent Claim
16 words
The composite of claim 2 wherein said discrete particles are completely surrounded by said glass matrix.
Claim 5
Dependent Claim
15 words
The composite of claim 1 wherein said organic polymer is in the form of fibers.
Claim 6
Dependent Claim
17 words
The composite of claim 1 wherein said organic polymer is in the form of approximately spherical particles.
Claim 7
Dependent Claim
23 words
The composite of claim 1 wherein said glass matrix and said organic polymer have comparable coefficients of thermal expansion of the same magnitude.
Claim 8
Dependent Claim
15 words
The composite of claim 6 wherein said organic polymer is a high temperature thermosetting polymer.
Claim 9
Dependent Claim
15 words
The composite of claim 6 wherein said organic polymer is a high temperature thermoplastic polymer.
Claim 10
Dependent Claim
48 words
A reinforced glass, composite, comprising: about 5% to 25% by volume of discrete particles in a glass matrix, said discrete particles comprising an inorganic material; and said glass matrix being a tin-phosphorous-oxyfluoride composition having a very low glass transition temperature to prevent serious degradation of said discrete particles.
Claim 11
Dependent Claim
48 words
A reinforced glass, composite, comprising: about 5% to 25% by volume of discrete particles in a glass matrix, said discrete particles comprising an inorganic material; and said glass matrix being a tin-phosphorous-oxyfluoride composition having a very low glass transition temperature to prevent serious degradation of said discrete particles.
Claim 12
Dependent Claim
46 words
The composite of claim 9 wherein said coefficient of thermal expansion of said glass matrix is no more than about 20% different from the coefficient of thermal expansion of said inorganic material so that interfacial stresses between said glass matrix and said inorganic material are minimized.
Claim 13
Dependent Claim
25 words
The composite of claim 10 wherein said inorganic material comprises small particles of conductive metal or alloy which can be wet by said glass matrix.
Claim 14
Dependent Claim
23 words
The composite of claim 10 wherein said inorganic material comprises a high melting point glass which can be wet by said glass matrix.
Claim 15
Dependent Claim
38 words
The composite of claim 10 wherein said glass matrix comprises in weight percent on an elemental basis as calculated from the batch, about 20-85% Sn, 2-20% P, 3-20% O, 10-36% F and at least 75% total of Sn+P+O+F.
Claim 16
Dependent Claim
70 words
The process of producing a composite, comprising the steps of: mixing to a substantially homogeneous state discrete organic polymer particles and tin-phosphorous-oxyfluoride glass in amounts to give about 5 to 25% discrete particles to glass by volume; and heating the mixture to a temperature where the glass is substantially fluid and the discrete particles remain solid, thereby providing a thixotropic mass of said particles in a matrix of said glass.
Claim 17
Dependent Claim
70 words
The process of producing a composite, comprising the steps of: mixing to a substantially homogeneous state discrete organic polymer particles and tin-phosphorous-oxyfluoride glass in amounts to give about 5 to 25% discrete particles to glass by volume; and heating the mixture to a temperature where the glass is substantially fluid and the discrete particles remain solid, thereby providing a thixotropic mass of said particles in a matrix of said glass.
Claim 18
Dependent Claim
26 words
The process of claim 14 wherein said discrete particles are substantially spherical so that the particles can slide past each other with a minimum of interference.
Claim 19
Dependent Claim
43 words
The process of claim 15 including the step of selecting said glass matrix to comprise in weight percent of an elemental basis as calculated from the batch, about 20-85% Sn, 2-20% P, 3-20% O, 10-36% F and at least 75% total of Sn+P+O+F.
Claim 20
Dependent Claim
69 words
The process of producing a composite, comprising the steps of: mixing to a substantially homogeneous state discrete inorganic particles and tin-phosphorous-oxyfluoride glass in amounts to give about 5 to 25% discrete particles to glass by volume; and heating the mixture to a temperature where the glass is substantially fluid and the discrete particles remain solid, thereby providing a thixotropic mass of said particles in a matrix of said glass.
Claim 21
Dependent Claim
69 words
The process of producing a composite, comprising the steps of: mixing to a substantially homogeneous state discrete inorganic particles and tin-phosphorous-oxyfluoride glass in amounts to give about 5 to 25% discrete particles to glass by volume; and heating the mixture to a temperature where the glass is substantially fluid and the discrete particles remain solid, thereby providing a thixotropic mass of said particles in a matrix of said glass.
Claim 22
Dependent Claim
26 words
The process of claim 7 wherein said discrete particles are substantially spherical so that the particles can slide past each other with a minimum of interference.
Claim 23
Dependent Claim
43 words
The process of claim 18 including the step of selecting said glass matrix to comprise in weight percent on an elemental basis as calculated from the batch, about 20-85% Sn, 2-20% P, 3-20% O, 10-36% F and at least 75% total of Sn+P+O+F.
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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) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |