US5334558A
Expired / Lapsed
US
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Low temperature glass with improved thermal stress properties and method of use
Assignee: Henkel Loctite Corp
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Filing: 1992-10-19
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Granted: 1994-08-02
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Expires: 2012-10-19
Abstract
Abstract A glass composition and method of use having unique crystallization and crystal remelt properties is disclosed. The glass composition consists essentially by weight percent on an oxide basis: about 40-65% Ag 2 O about 15-35% V 2 O 5 about 0-30% PbO 2 about 0-20% TeO 2 The present invention also contemplates a unique, essentially resin-free organic system that utilizes the novel glass composition described above.
Inventors
- 👤 Raymond L. Dietz
- 👤 David M. Peck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:59
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/14; C03C8/18; C03C3/00; C03C3/12; C03C3/122; C03C8/24
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
35 words
A crystallizing glass composition which consists essentially of, by weight on an oxide basis, about: about 47% Ag 2 O about 22% V 2 O 5 about 9% TeO 2 about 22% PbO 2 .
Claim 2
Dependent Claim
35 words
A crystallizing glass composition which consists essentially of, by weight on an oxide basis, about: about 47% Ag 2 O about 22% V 2 O 5 about 9% TeO 2 about 22% PbO 2 .
Claim 3
Dependent Claim
31 words
A crystallizing glass composition which consists essentially of, by weight on an oxide basis: about 40-65% Ag 2 O about 15-35% V 2 O 5 and about 5-20% TeO 2 .
Claim 4
Dependent Claim
31 words
A crystallizing glass composition which consists essentially of, by weight on an oxide basis: about 40-65% Ag 2 O about 15-35% V 2 O 5 and about 5-20% TeO 2 .
Claim 5
Dependent Claim
25 words
A crystallizing glass composition comprising, by weight on an oxide basis: about 40-65% about 15-35% V 2 O 5 and about 5-25% TeO 2 .
Claim 6
Dependent Claim
25 words
A crystallizing glass composition comprising, by weight on an oxide basis: about 40-65% about 15-35% V 2 O 5 and about 5-25% TeO 2 .
Claim 7
Dependent Claim
22 words
The crystallizing glass of claims 2 or 3 wherein the ratio of Ag 2 O to TeO 2 is greater than 2.
Claim 8
Dependent Claim
48 words
A crystallizing glass composition which consists essentially of, by weight n an oxide basis: about 40-65% Ag 2 O about 15-35% V 2 O 5 and about 5-20% of at least one of a group consisting of TeO 2 , PbO 2 and Pb 3 O 4 .
Claim 9
Dependent Claim
48 words
A crystallizing glass composition which consists essentially of, by weight n an oxide basis: about 40-65% Ag 2 O about 15-35% V 2 O 5 and about 5-20% of at least one of a group consisting of TeO 2 , PbO 2 and Pb 3 O 4 .
Claim 10
Dependent Claim
36 words
The crystallizing glass of claim 5 wherein the ratio of Ag 2 O to at least one of the group consisting of TeO 2 , PbO 2 and Pb 3 O 4 is greater than 2.
Claim 11
Dependent Claim
49 words
A crystallizing glass composition which consists essentially of, by weight on an oxide basis: about 45-65% Ag 2 O about 15-35% V 2 O 5 and about 5-20% of at least one of a group consisting of TeO 2 , PbO, PbO 2 and Pb 3 O 4 .
Claim 12
Dependent Claim
49 words
A crystallizing glass composition which consists essentially of, by weight on an oxide basis: about 45-65% Ag 2 O about 15-35% V 2 O 5 and about 5-20% of at least one of a group consisting of TeO 2 , PbO, PbO 2 and Pb 3 O 4 .
Claim 13
Dependent Claim
45 words
A crystallizing glass composition which consists essentially of, by weight on an oxide basis: about 40-65% Ag 2 O about 15-35% V 2 O 5 about 0-20% TeO 2 and about 0-30% of a group consisting of PbO 2 and Pb 3 O 4 .
Claim 14
Dependent Claim
45 words
A crystallizing glass composition which consists essentially of, by weight on an oxide basis: about 40-65% Ag 2 O about 15-35% V 2 O 5 about 0-20% TeO 2 and about 0-30% of a group consisting of PbO 2 and Pb 3 O 4 .
Claim 15
Dependent Claim
45 words
A crystallizing glass composition which consists essentially of, by weight on an oxide basis: about 40-50% Ag 2 O about 15-25% V 2 O 5 about 5-25% TeO 2 and about 5-30% of a group consisting of PbO 2 and Pb 3 O 4 .
Claim 16
Dependent Claim
45 words
A crystallizing glass composition which consists essentially of, by weight on an oxide basis: about 40-50% Ag 2 O about 15-25% V 2 O 5 about 5-25% TeO 2 and about 5-30% of a group consisting of PbO 2 and Pb 3 O 4 .
Claim 17
Dependent Claim
42 words
A crystallizing glass composition comprising, by weight on an oxide basis: about 40-50% Ag 2 O about 15-25% V 2 O 5 about 5-25% TeO 2 and about 5-30% of a group consisting of PbO 2 and Pb 3 O 4 .
Claim 18
Dependent Claim
42 words
A crystallizing glass composition comprising, by weight on an oxide basis: about 40-50% Ag 2 O about 15-25% V 2 O 5 about 5-25% TeO 2 and about 5-30% of a group consisting of PbO 2 and Pb 3 O 4 .
Claim 19
Dependent Claim
33 words
An essentially resin-free paste comprising the glass of claim 1, 2, 3, 5, 7, 8, 9 or 10 and an organic solvent and a resin percentage of less than 0.1% of the paste.
Claim 20
Dependent Claim
37 words
A paste according to claim 11 wherein said solvent is an aromatic solvent and said paste further includes conductive metallic particles selected from the group consisting of Ag, Au, Al, Cu, Ni, Pd, An, Sn and Pt.
Claim 21
Dependent Claim
37 words
A paste according to claim 11 wherein said solvent is an aliphatic solvent and said paste further includes conductive metallic particles selected from the group consisting of Ag, Au, Al, Cu, Ni, Pd, Zn, Sn and Pt.
Claim 22
Dependent Claim
29 words
A paste according to claim 11 wherein said paste includes non-electrically conductive ceramic particles selected from the group consisting of synthetic diamond, boron nitride, aluminum nitride, beryillia and alumina.
Claim 23
Dependent Claim
32 words
A paste according to claim 11, 12 or 13 wherein said paste consists essentially of by weight about 67% silver flake with a surfactant, about 18% glass, about 15% of said solvent.
Claim 24
Dependent Claim
20 words
A sealing glass composition comprising the crystallizing glass composition of claims 1, 2, 3, 5, 7, 8, 9 or 10.
Claim 25
Dependent Claim
27 words
The sealing glass of claim 16 further comprising an effective amount of an expansion modifying filler, such that the thermal expansion coefficient of the glass is reduced.
Claim 26
Dependent Claim
16 words
The glass paste composition of claim 11 further comprising a non-electrically conductive, high thermally conductive powder.
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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) | 1997-08-01 | 1998-01-31 | 1998-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-01 | 2002-01-31 | 2002-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-01 | 2006-01-31 | 2006-08-02 | $7700.00 | Window Closed / Lapsed |