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:
Nov. 09, 1999
Filed:
May. 07, 1997
Ryoichi Yamamoto, Kanagawa-ken, JP;
Shizuo Umemura, Kanagawa-ken, JP;
Kazuo Sanada, Kanagawa-ken, JP;
Fuji Photo Film Co., Ltd., Kanagawa-ken, JP;
Abstract
An information recording medium has a semiconductor layer and a ferroelectric layer formed thereon. Information is recorded on the recording medium by locally applying an electric voltage modulated according to the information to the recording medium and then removing it therefrom so that the ferroelectric layer is polarized by an electric charge produced by application of the electric voltage. The electric charge is caused to stay on the surface of the ferroelectric layer for at least 0.1 msec after removal of the electric voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile