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. 11, 2004
Filed:
Apr. 08, 2002
Chi-Hui Lin, Kaohsiung, TW;
Cheng-Jye Chu, Kaohsiung, TW;
Pai-Mou Lee, Kaohsiung, TW;
Goang-Cheng Chang, Kaohsiung, TW;
Nanmat Technology Co. Ltd., Kaohsiung, TW;
Abstract
This invention relates to a method for detecting quantity variation of high purity liquid chemicals by way of detecting capacitance variation to determine the liquid level of liquid chemicals. Meanwhile, the ratio of the area of the smallest electrode of the capacitor to the distance between the electrodes is adjusted to magnify the capacitance so that a very small variation can be observed clearly. This invention also discloses a device to carry out this method.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile