Patent US5064463A successfully refreshed from Google Patents.
US5064463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feedstock and process for metal injection molding
Assignee: Individual
•
Filing: 1991-01-14
•
Granted: 1991-11-12
•
Expires: 2011-01-14
Abstract
Abstract A feedstock for metal injection molding comprises a reactive metal powder selected from the group consisting of aluminum, magnesium and titanium coated with a less reactive metal selected from the group consisting of cobalt, copper, iron, nickel, tin and zinc dispersed in a binder.
Inventors
- 👤 Michael A. Ciomek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:02
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/22; B22F3/225; B22F1/00; B22F1/17; B22F2998/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12181
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
61 words
In a feedstock for metal injection molding consisting essentially of a metal powder suspended in a binder, the improvement which comprises the metal powder being at least one reactive metal selected from the group consisting of aluminum, magnesium and titanium coated with at least one less reactive metal selected from the group consisting of cobalt, copper, iron, nickel, tin and zinc.
Claim 2
Dependent Claim
61 words
In a feedstock for metal injection molding consisting essentially of a metal powder suspended in a binder, the improvement which comprises the metal powder being at least one reactive metal selected from the group consisting of aluminum, magnesium and titanium coated with at least one less reactive metal selected from the group consisting of cobalt, copper, iron, nickel, tin and zinc.
Claim 3
Dependent Claim
19 words
The improvement as described in claim 1 wherein the reactive metal is coated metal-to-metal with the less reactive metal.
Claim 4
Dependent Claim
13 words
The improvement as described in claim 2 wherein the reactive metal is aluminum.
Claim 5
Dependent Claim
14 words
The improvement as described in claim 3 wherein the less reactive metal is copper.
Claim 6
Dependent Claim
20 words
The improvement as described in claim 2 wherein the reactive metal is magnesium and the less reactive metal is zinc.
Claim 7
Dependent Claim
20 words
The improvement as described in claim 2 wherein the reactive metal is titanium and the less reactive metal is tin.
Claim 8
Dependent Claim
19 words
The improvement as described in claim 2 wherein the reactive metal comprises an alloy based on said reactive metal.
Claim 9
Dependent Claim
23 words
The improvement as described in claim 2 wherein the reactive metal powder has an average particle size of less than about 45 microns.
Claim 10
Dependent Claim
18 words
The improvement as described in claim 8 wherein the average particle size is less than about 20 microns.
Claim 11
Dependent Claim
18 words
The improvement as described in claim 9 wherein the average particle size is less than about 10 microns.
Claim 12
Dependent Claim
21 words
The improvement as described in claim 2 wherein the binder constitutes between about 30% and 50%, by volume, of the feedstock.
Claim 13
Dependent Claim
39 words
The improvement as described in claim 2 wherein the less reactive metal has been deposited on freshly exposed surfaces of the reactive metal powder by chemical replacement from a solution containing a dissolved salt of the less reactive metal.
Claim 14
Dependent Claim
29 words
In a feedstock for metal injection molding consisting essentially of a metal powder dispersed in a binder the improvement which comprises the metal powder being aluminum coated with copper.
Claim 15
Dependent Claim
29 words
In a feedstock for metal injection molding consisting essentially of a metal powder dispersed in a binder the improvement which comprises the metal powder being aluminum coated with copper.
Claim 16
Dependent Claim
23 words
The improvement as described in claim 13 wherein the copper-coated aluminum powder has an average particle size of less than about 45 microns.
Claim 17
Dependent Claim
21 words
The improvement as described in claim 14 wherein the powder has an average particle size of less than about 20 microns.
Claim 18
Dependent Claim
21 words
The improvement as described in claim 15 wherein the powder has an average particle size of less than about 10 microns.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |