Abstract: An anodic oxide containing impurities at a low concentration and thereby improved in film quality, and a process for fabricating the same. The process comprises increasing the current between a metallic thin film and a cathode until a voltage therebetween reaches a predetermined value, and maintaining the voltage at the predetermined value thereafter.
Type:
Grant
Filed:
March 10, 1995
Date of Patent:
January 21, 1997
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
Abstract: Metals useful in the formation of hydrides for applications such as batteries are advantageously activated by hydriding/dehydriding process. This process involves repeatedly stepping the potential of metal/metal hydride electrodes in electrochemical cells. The process activates hydrogen-storing materials that are difficult to activate by conventional means.
Type:
Grant
Filed:
August 18, 1994
Date of Patent:
October 1, 1996
Assignee:
Lucent Technologies Inc.
Inventors:
Michael E. Badding, Mark T. McCormack, Donald W. Murphy, Brijesh Vyas
Abstract: An electrophotographic photoreceptor is disclosed, comprising at least a substrate having thereon a charge transporting layer and a charge generating layer, wherein said charge transporting layer is a porous anodized aluminum film which is formed by anodizing a substrate at least a surface of which comprises aluminum or an aluminum alloy by using an alternating current having an effective voltage of from 3 to 40 V or an electrical current of alternating waveform having substantially the equal action.
Type:
Grant
Filed:
September 21, 1990
Date of Patent:
July 21, 1992
Assignee:
Fuji Xerox Co., Ltd.
Inventors:
Yuzuru Fukuda, Shigeru Yagi, Ken Ebihara, Yasunobu Iwata
Abstract: A high molecular humidity sensor and manufacturing method thereof in which polypyrrole being of conductive high molecule is electrochemically polymerized and then reduced whereby ionic conductive property is given go that humidity sensibility becomes excellent.The high molecular humidity sensor of the invention is characterized in that it is a structure in which polypyrrole doped with dodecylsulfate anion DS.sup.- is stuck in film form on the surface of fine electrode, and cations Na.sup.+, K.sup.+ are permeated to said polypyrrole whereby salt is formed, and humidity sensibility is exhibited in region of 10.sup.4 -10.sup.6 .OMEGA., and humidity sensing speed becomes within several tens seconds to several minutes.
Type:
Grant
Filed:
January 22, 1991
Date of Patent:
June 16, 1992
Assignee:
Korea Institute of Science and Technology
Inventors:
Chung Y. Kim, Hee-Woo Rhee, Inseok Hwang, Jai K. Kim