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:
Jun. 29, 1999
Filed:
Sep. 18, 1997
Applicant:
Inventors:
Katsumi Murai, Obu, JP;
Mamoru Tateishi, Obu, JP;
Assignee:
Aisan Kogyo Kabushiki Kaisha, , JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310316 ; 310317 ; 310325 ; 318116 ;
Abstract
Disclosed is the powder feeder in which the sampling timing G, H, . . . is set during the inactive period T.sub.i in synchronism with the cycle of the duty ratio clock when the output voltage V.sub.CELL is fed back to the microcomputer 13, thereby the feedback signal (the output voltage V.sub.CELL) on which noise is not superposed can be sampled and the feed amount of the powder P can be controlled with high accuracy.