Ishihara; Heigo

Patent Applications and Registrations

Patent applications and USPTO patent grants for Ishihara; Heigo.The latest application filed is for "lubricant, magnetic disk and magnetic disk apparatus".

Company Profile

0.8.1

Ishihara; Heigo - Hinode-machi JP
Ishihara, Heigo - Tokyo JP
Ishihara; Heigo - Hachioji JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Lubricant, magnetic disk and magnetic disk apparatus Grant 6,869,536 - Ishida , et al. March 22, 2	2005-03-22
Lubricant, magnetic disk and magnetic disk apparatus App 20030175470 - Ishida, Mina ; et al.	2003-09-18
Magnetic recording medium having a protective layer which includes high and low surface energy regions and a lubricant Grant 5,543,203 - Tani , et al. August 6, 1	1996-08-06
Method for magnetic orientation of magnetic recording medium using Meissner effect of high Tc superconductor Grant 5,034,243 - Chiba , et al. July 23, 1	1991-07-23
Process for producing information recording medium Grant 5,008,128 - Kudo , et al. April 16, 1	1991-04-16
Magnetic recording medium and method for producing the same Grant 4,985,295 - Ishihara , et al. January 15, 1	1991-01-15
Magnetic recording medium Grant 4,794,035 - Ishihara , et al. December 27, 1	1988-12-27
Magnetic recording medium Grant 4,722,859 - Kudo , et al. February 2, 1	1988-02-02
Composition of magnetic recording media Grant 4,238,341 - Kato , et al. December 9, 1	1980-12-09

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