U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Device for magnetically reading and writing on a flying support

Patent 4698708 Issued on October 6, 1987. Estimated Expiration Date: Icon_subject January 30, 2005. 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.

Patent References

2961494

3657806

3922776

Thin film magnetic recording heads Patent #: 4321641
Issued on: 03/23/1982
Inventor: Lee

Inventor

Assignee

Application

No. 06/696486 filed on 01/30/1985

US Classes:

360/235.3, Body material360/126Laminated

Examiners

Primary: Heinz, A. J.

Attorney, Agent or Firm

International Classes

G11B 5/187 (20060101)
G11B 5/31 (20060101)
G11B 5/60 (20060101)

Foreign Application Priority Data

1984-02-03 FR

Abstract

Device for reading and writing on a magnetic recording support.The device comprises magnetic read and write heads located on the upper faces of reliefs forming a catamaran, each head having a coil in a plane parallel to said face and having at least one read and write pole piece flush with the upper face of the reliefs.Application to magnetic disks in computers.

Other References

  • IBM Technical Disclosure Bulletin, vol. 21, No. 12, May 1979, p. 5002, New York, U.S., K. E. Petersen: "Thin Film Magnetic Heads"
  • Patents Abstracts of Japan, vol. 1, No. 103, Sep. 13, 1977, p. 3310E77; & JP A 52 36016 (Hitachi Seisakusho K.K.) Mar. 19, 1977
  • Patents Abstracts of Japan, vol. 1, No. 119, Oct. 11, 1977, p. 4772E77; & JP A 52 50711 (Hitachi Seisakusho K.K.) Apr. 23, 1977
  • IBM Technical Disclosure Bulletin, vol. 25, No. 7A, Dec. 1982, p. 3173, New York, U.S., G. Klaus et al.: "Sliders for Magnetic Heads of Surface-Hardened Silicon with Integrated Electronic Components"
  • Patents Abstracts of Japan, vol. 7, No. 224 (P-227)[1369], Oct. 5, 1983; & JP A 58 114 328 (Fujitsu K.K.) Jul. 7, 1983
  • IBM Technical Disclosure Bulletin, vol. 15, No. 7, Dec. 1972, pp. 2183, 2184, New York, US; W. A. Warwick: "Multilayer Ceramic Slider for Thin-Film Heads", p. 2183
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