The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 2019
Filed:
Jun. 14, 2016
Fuji Electric (Malaysia) Sdn, Bhd., Kulim, Kedah Darul Aman, MY;
Yew Hong Ooi, Kedah Darul Aman, MY;
Yeng Yeng Por, Kedah Darul Aman, MY;
Khairul Azlan Bin Saleh, Kedah Darul Aman, MY;
FUJI ELECTRIC (MALAYSIA) SDN, BHD., Kulim, Kedah Darul Aman, MY;
Abstract
An ionic lubricant includes a single lubricant compound having a perfluoropolyether main chain, wherein each end of the perfluoropolyether main chain is terminated by an end group, and at least one of the end groups includes an ionic bond and at least one functional group. The ionic perfluoropolyether lubricant has unique characteristics that allows its ultra-thin and uniform distribution over a protective overcoat layer of a magnetic recording medium, while at the same time providing its molecules with strong adhesion power to the protective overcoat layer of the magnetic recording medium compared to existing lubricants, so as to provide shorter magnetic spacing between the magnetic recording medium and the magnetic head, and enable longer operation hours for the magnetic recording medium.