IP Library Granted Patent US 8,252,417
Granted Patent B2
US 8,252,417 · App. 12/191,691 · Granted Aug 28, 2012

Metallic particles for electrokinetic or electrostatic deposition

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Quick Facts
Patent No.
US 8,252,417
App. No.
12/191,691
Granted
Aug 28, 2012
Kind
B2
Abstract

Metallic particles for electrokinetic or electrostatic deposition, and a method for making such particles, comprising metallic particle bodies, an organic acid film on the particle bodies, and a charge director adhered to the organic acid film.

Claims (36)

1. Metallic particles for electrokinetic or electrostatic deposition comprising:

metallic particle bodies;

a molecular film on the particle bodies comprising an organic acid; and

a charge director adhered to the organic acid film, wherein the charge director is selected from the group consisting of barium petronate, calcium petronate, copper napthenate, and aluminum stearate and the metallic particles have a positive or negative charge;

wherein the molecular film on the particle bodies comprises acetic acid.

2. The metallic particles of claim 1 wherein the metallic particle bodies are solder metal particle bodies.

3. The metallic particles of claim 1 wherein the metallic particle bodies are selected from the group consisting of Sn particle bodies and Sn alloy particle bodies.

4. The metallic particles of claim 1 wherein the metallic particle bodies comprise a material selected from the group consisting of Sn, Sn/Pb, Sn/Ag/Cu, Sn/Ag, Sn/Cu, Sn/Ag/Bi, Sn/Bi, and Sn/Pb/Bi.

5. The metallic particles of claim 1 wherein the metallic particle bodies have a particle size between about 0.5 micron and about 50 microns.

6. The metallic particles of claim 1 wherein the metallic particle bodies have a particle size between about 1 micron and about 1000 microns.

7. The metallic particles of claim 1 wherein the metallic particle bodies have a particle size between about 50 microns and about 500 microns.

8. The metallic particles of claim 1 wherein the metallic particle bodies have a particle size between about 10 microns and about 20 microns.

9. The metallic particles of claim 1 wherein the metallic particle bodies have a particle size between about 100 microns and about 1 mm.

10. The metallic particles of claim 1 wherein the charge director is barium petronate or calcium petronate.

11. The metallic particles of claim 1 wherein the charge director is copper napthenate.

12. The metallic particles of claim 1 wherein the charge director is aluminum stearate.

13. Metallic particles for electrokinetic or electrostatic deposition comprising:

metallic particle bodies;

a molecular film on the particle bodies comprising dicholoroacetic acid; and

a charge director adhered to the organic acid film.

14. The metallic particles of claim 13 wherein the charge director is selected from the group consisting of barium petronate, calcium petronate, copper napthenate, and aluminum stearate.

15. Metallic particles for electrokinetic or electrostatic deposition comprising:

metallic particle bodies;

a molecular film on the particle bodies comprising trichloroacetic acid; and

a charge director adhered to the organic acid film.

16. The metallic particles of claim 15 wherein the charge director is selected from the group consisting of barium petronate, calcium petronate, copper napthenate, and aluminum stearate.

17. Metallic particles for electrokinetic or electrostatic deposition comprising:

metallic particle bodies;

a molecular film on the particle bodies comprising an organic acid; and

a charge director adhered to the organic acid film, wherein the charge director is selected from the group consisting of barium petronate, calcium petronate, copper napthenate, and aluminum stearate and the metallic particles have a positive or negative charge;

wherein the molecular film on the particle bodies comprises propionic acid.

18. Metallic particles for electrokinetic or electrostatic deposition comprising:

metallic particle bodies;

a molecular film on the particle bodies comprising an organic acid; and

a charge director adhered to the organic acid film, wherein the charge director is selected from the group consisting of barium petronate, calcium petronate, copper napthenate, and aluminum stearate and the metallic particles have a positive or negative charge;

wherein the molecular film on the particle bodies comprises methacryclic acid.

Assignments (7)
ASSIGNMENT OF SECURITY INTEREST IN PATENT COLLATERAL Recorded Nov 17, 2022
From: BARCLAYS BANK PLC
To: CITIBANK, N.A.
Reel/Frame 061956/0643 →
CHANGE OF NAME Recorded Feb 19, 2019
From: ALPHA METALS, INC.
To: ALPHA ASSEMBLY SOLUTIONS INC.
Reel/Frame 048373/0054 →
SECURITY INTEREST Recorded Feb 5, 2019
From: ALPHA ASSEMBLY SOLUTIONS INC. (F/K/A ALPHA METALS, INC.)
To: BARCLAYS BANK PLC, AS COLLATERAL AGENT
Reel/Frame 048260/0683 →
RELEASE OF SECURITY INTEREST Recorded Feb 4, 2019
From: BARCLAYS BANK PLC, AS COLLATERAL AGENT
To: ALPHA ASSEMBLY SOLUTIONS INC. (F/K/A ALPHA METALS, INC.)
Reel/Frame 048232/0849 →
PATENT SECURITY AGREEMENT Recorded Apr 15, 2016
From: ALPHA METALS, INC.
To: BARCLAYS BANK PLC, AS COLLATERAL AGENT
Reel/Frame 038439/0590 →
CHANGE OF NAME Recorded Mar 17, 2016
From: FRY'S METALS INC.
To: ALPHA METALS, INC.
Reel/Frame 038144/0984 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 14, 2008
From: KHASELEV, OSCAR; LEWIS, BRIAN G.
To: FRY'S METALS, INC.
Reel/Frame 021391/0247 →