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:
Sep. 02, 2014
Filed:
Aug. 31, 2010
Masato Ishii, Kanagawa-ken, JP;
Yasuyuki Takahashi, Kanagawa, JP;
Takuro Ohmaru, Kanagawa, JP;
Hidetomo Kobayashi, Kanagawa, JP;
Yutaka Shionoiri, Kanagawa, JP;
Masato Ishii, Kanagawa-ken, JP;
Yasuyuki Takahashi, Kanagawa, JP;
Takuro Ohmaru, Kanagawa, JP;
Hidetomo Kobayashi, Kanagawa, JP;
Yutaka Shionoiri, Kanagawa, JP;
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Abstract
In a semiconductor device including a control circuit and a memory, the memory includes at least a sector for preventing additional writing and an information sector. When data for preventing additional writing is written to the sector for preventing additional writing and information is written to the information sector which is electrically connected to the sector for preventing additional writing, additional writing to the information sector is impossible.