Inorganic powders with improved dispersibility

Patent 4810524 Issued on March 7, 1989. Estimated Expiration Date:

December 2, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3252842

3725521

3892610

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Inventors

Assignee

TDK Corporation

Application

No. 06/936992 filed on 12/02/1986

US Classes:

427/490, Flurocarbon containing coating204/169, Halogenated or oxidized204/170, Gaseous204/171, Acetylene427/213, Fluidized bed utilized427/488, Plasma initiated polymerization428/570Composite powder (e.g., coated, etc.)

Examiners

Primary: Miller, Edward A.

Attorney, Agent or Firm

Seidel, Gonda, Lavorgna & Monaco

International Classes

C09C 3/04 (20060101)
H01F 1/032 (20060101)
H01F 1/06 (20060101)
C08F 2/52 (20060101)
C08F 2/46 (20060101)
G11B 5/706 (20060101)

Foreign Application Priority Data

1982-06-18 JP

Abstract

Inorganic powders are coated with a thin film of an organic polymer formed on the individual particles by plasma polymerization. The film thickness may be not more than 100 Å, and the inorganic powders include magnetic ones.