US4598037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive conductive metal composition
Assignee: EIDP Inc
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Filing: 1984-12-21
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Granted: 1986-07-01
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Expires: 2004-12-21
Abstract
Abstract A photosensitive conductive metal coating composition which is fireable in a weakly oxidizing atmosphere comprising an admixture of a. Smooth finely divided particles of conductive metal, and b. Finely divided particles of cadmium-containing lead aluminosilicate glass, dispersed in a solution of c. Acrylic polymer binder d. Volatile plasticizer, e. A photoinitiation system, and f. Photohardenable monomer.
Inventors
- 👤 John J. Felten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:15
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/80; C04B41/81; C04B41/85; C04B41/88; C04B41/009; C04B41/45; C04B41/50; C04B41/51; C04B41/5183; G; G03; G03F; G03F7/00; G03F7/004; G03F7/0047; H; H01; H01B; H01B1/00; H01B1/14; H01B1/16; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
141 words
A photosensitive conductive metal coating composition which is fireable in a weakly oxidizing atmosphere comprising an admixture of: a. Smooth finely divided particles of conductive metal, at least 80% wt. of which (1) have an aspect ratio of no more than 2 and (2) have a particle size of 2-6 μm, and b. Finely divided particles of cadmium-containing lead aluminosilicate glass having a softening point of 500°-600° C., at least 80% wt. of which have a particle size of 2-6 μm, the admixture of a. and b. being dispersed in a solution of c. Acrylic polymer binder, d. Volatile plasticizer, e. A photoinitiation system and f. Photohardenable monomer having at least one addition-polymerizable ethylenically unsaturated group, the plasticizer comprising from 10 to 30% wt. of the polymeric binder and the monomer comprising from 20 to 33% wt. of the polymeric binder.
Claim 2
Dependent Claim
141 words
A photosensitive conductive metal coating composition which is fireable in a weakly oxidizing atmosphere comprising an admixture of: a. Smooth finely divided particles of conductive metal, at least 80% wt. of which (1) have an aspect ratio of no more than 2 and (2) have a particle size of 2-6 μm, and b. Finely divided particles of cadmium-containing lead aluminosilicate glass having a softening point of 500°-600° C., at least 80% wt. of which have a particle size of 2-6 μm, the admixture of a. and b. being dispersed in a solution of c. Acrylic polymer binder, d. Volatile plasticizer, e. A photoinitiation system and f. Photohardenable monomer having at least one addition-polymerizable ethylenically unsaturated group, the plasticizer comprising from 10 to 30% wt. of the polymeric binder and the monomer comprising from 20 to 33% wt. of the polymeric binder.
Claim 3
Dependent Claim
18 words
The composition of claim 1 in which the organic components c-f. are dissolved in volatile nonaqueous organic solvent.
Claim 4
Dependent Claim
24 words
A photosensitive conductive film comprising a layer of the composition of claim 2 from which the nonaqueous organic solvent has been removed by volatilization.
Claim 5
Dependent Claim
15 words
The composition of claim 2 which is a paste of consistency suitable for screen printing.
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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) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-30 | 1993-12-30 | 1994-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-30 | 1997-12-30 | 1998-07-01 | $7700.00 | Window Closed / Lapsed |