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:
Mar. 16, 2004
Filed:
Sep. 21, 2001
Tomonori Ikeya, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
The present invention relates to a process for producing an information recording medium including the steps of forming, on a substrate provided with a groove having a wall which forms an angle smaller than 80° with respect to a bottom of the groove, an underlayer having a wall which forms an angle of 80° or more with respect to the bottom of the groove, by a film forming method of a low directivity; and forming at least a recording film on the formed underlayer at the bottom of the groove, on the top of a projected portion between grooves or both at the bottom of the groove and on the top of the projected portion, and an information recording medium obtained thereby.