Patent US4076978A successfully refreshed from Google Patents.
Patent US3762965A successfully refreshed from Google Patents.
US3762965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solder compositions of improved active solder vehicles
Assignee: EIDP Inc
•
Filing: 1971-07-27
•
Granted: 1973-10-02
•
Expires: 1991-07-27
Abstract
Abstract Novel vehicles comprising an active chloride-containing organic compound which is capable of removing surface oxides from soldering metals, a thixotropic agent, rosin (or derivatives thereof) and an organic solvent. These vehicles are used to form solder compositions which contain finely divided solder metals dispersed in the vehicle. Solder compositions which are useful for either screen-printing or dipping techniques may be formed. The use of this novel vehicle provides good solder flowability at soldering temperatures, good solder bonds, and reduced solderball formation. These compositions are particularly suited for soldering electronic circuitry.
Inventors
- 👤 R Amin
- 👤 J Larry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:21
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
26 words
A composition according to claim 1 wherein the metal is from the group consisting of gold, silver, tin, germanium, lead, antimony, alloys thereof, and mixtures thereof.
Claim 2
Dependent Claim
13 words
A composition according to claim 1 wherein the metal is a tin/antimony alloy.
Claim 3
Dependent Claim
13 words
A composition according to claim 1 wherein the metal is a tin/lead alloy.
Claim 4
Dependent Claim
13 words
A composition according to claim 1 wherein the metal is a tin/silver alloy.
Claim 5
Dependent Claim
13 words
A composition according to claim 1 wherein the metal is a gold/tin alloy.
Claim 6
Dependent Claim
13 words
A composition according to claim 1 wherein the metal is a gold/antimony alloy.
Claim 7
Dependent Claim
22 words
A vehicle according to claim 1 comprising, by weight 10-25 percent (a), 0.5-10 percent (b), 40-60 percent (c), and 30-40 percent (d).
Claim 8
Dependent Claim
15 words
A vehicle according to claim 8 wherein the thixotropic agent (b) is hydrogenated castor oil.
Claim 9
Dependent Claim
14 words
A solder composition of finely divided solder metal in the vehicle of claim 8.
Claim 10
Dependent Claim
15 words
A vehicle according to claim 1 wherein the thixotropic agent (b) is hydrogenated castor oil.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |