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:
May. 16, 2006
Filed:
Oct. 22, 2002
Masami Yakabe, Tokyo, JP;
Koichi Nakano, Hyogo, JP;
Masami Yakabe, Tokyo, JP;
Koichi Nakano, Hyogo, JP;
Tokyo Electron Limited, Tokyo, JP;
Hokuto Electronics, Inc., Hyogo, JP;
Abstract
An electric potential fixing apparatus is provided that can prevent the combined total amount of electricity of a connection line between the first capacitance and the second capacitance from changing even when the electric potential of the connection line between the first capacitance and the second capacitance is fixed in the case where the first capacitance and the second capacitance are directly connected. This electric potential fixing apparatus has the first high resistance () and the second high resistance () and includes a voltage supply circuit () that preserves the combined total amount of electric charge of a measuring capacitance () and a fixed capacitance () and maintains constant the electric potential of a signal line () that connects the measuring capacitance () and the fixed capacitance (). And an output terminal () of the voltage supply circuit () is connected to the signal line ().