Method for detecting quantity variation of high purity liquid chemicals and devices to carry out the method
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01R-027/26
G01F-023/00
출원번호
US-0118778
(2002-04-08)
발명자
/ 주소
Lin, Chi-Hui
Chu, Cheng-Jye
Lee, Pai-Mou
Chang, Goang-Cheng
출원인 / 주소
Nanmat Technology Co. Ltd.
대리인 / 주소
Kolisch Hartwell, PC
인용정보
피인용 횟수 :
1인용 특허 :
3
초록▼
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 ele
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.
대표청구항▼
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 ele
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. No. 09/680,630, “GAMING DEVICE HAVING IMPROVED AWARD OFFER BONUS SCHEME,” Ser. No. 09/682,368, “GAMING DEVICE HAVING OFFER ACCEPTANCE GAME WITH TERMINATION LIMIT,” Ser. No. 09/822,711, “GAMING DEVICE HAVING OFFER/ACCEPTANCE ADVANCE THRESHOLD AND LIMIT BONUS SCHEME,” Ser. No. 09/838,014, “GAMING DEVICE HAVING BONUS GAME COMBINING ACCEPT/REJECT AND ALTERNATIVE BONUS,” Ser. No. 09/945,082, “GAMING DEVICE HAVING AN AWARD OFFER AND TERMINATION BONUS SCHEME,” Ser. No. 09/682,428, “GAMING DEVICE HAVING AN AWARD DISTRIBUTOR AND AN AWARD ACCUMULATOR BONUS GAME,” Ser. No. 09/682,369, and “GAMING DEVICE HAVING IMPROVED OFFER AND ACCEPTANCE BONUS SCHEME,” Ser. No. 10/074,273, “GAMING DEVICE HAVING A BONUS SCHEME WITH MULTIPLE SELECTION GROUPS,” Ser. No. 10/195,292, “GAMING DEVICE HAVING APPARATUS AND METHOD FOR PRODUCING AN AWARD THROUGH AWARD ELIMINATION OR REPLACEMENT,: Ser. No. 10/172,870, “GAMING DEVICE HAVING APPARATUS AND METHOD FOR PRODUCING AN AWARD THROUGH AWARD ELIMINATION OR REPLACEMENT,” Ser. No. 10/173,283, “GAMING DEVICE HAVING A BONUS SCHEME WITH MULTIPLE SELECTION GROUPS,” Ser. No. 10/243,047.
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이 특허에 인용된 특허 (3)
Mulder Richard,NLX ; Schoenmakers Comelis W. P.,NLX ; Slezak Marian J. W.,NLX, Apparatus for measuring the quality of a fluid in a vessel.
Christopher S. Blatt ; Richard H. Pearce ; Graham Williams GB; Edward H. Wentworth, III, Automatic refill system for ultra pure or contamination sensitive chemicals.
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