Abstract: A method for manufacturing a semiconductor device comprising a nonvolatile memory transistor of a stacked gate structure having a floating gate and a control gate, and a MOS transistor of a single gate structure, wherein the method comprises the steps of forming a first insulation film that becomes a gate oxide film of the transistors on a semiconductor substrate; forming a first conductive layer on the first insulation film; removing, from the first conductive layer, a region for separating a floating gate in a direction perpendicular to a direction in which the control gate is formed extendedly; forming a second insulation layer on the first conductive layer; forming a second conductive layer on the second insulation film; patterning the second conductive layer so as to form the control gate; and patterning the first conductive layer to form the stacked gate structure and the single gate structure.

Abstract: Specified imidazoquinoline derivatives represented by the formula (I): ##STR1## where Q represents an optionally substituted phenyl, pyridyl or furyl group; Y represents either a hydrogen atom or, when taken together with Z, an oxygen atom and a methylene group; Z represents a hydrogen atom, a hydroxymethyl group, a carboxymethyl group, a 2-oxo-1-pyrrolidinyl group or the following formula (III):--A--R.sup.2 (III)(where A represents an oxygen atom, a sulfur atom or the group --NH--);or salts of such derivatives inhibit the increase of eosinophils and are useful as agents for preventing and/or treating diseases that manifest the increase of eosinophils.

Abstract: A nitrogen-containing tricyclic compound represented by formula (I): ##STR1## a salt thereof, or a solvate of said compound or said salt, wherein R represents phenyl or naphthyl group which is unsubstituted or substituted at one to five sites with a group such as a halogen atom; a straight chain or branched alkyl group containing 1 to 10 carbon atoms which is unsubstituted or substituted with one or more halogen atoms; or the like; Y represents hydrogen atom; and Z represents a group such as hydrogen atom, hydroxyl group, or the like; or Y and Z together represent a group such as hydrazono group, hydroxyimino group, or the like which is unsubstituted or substituted with a particular group; and X.sup.1 -X.sup.2 .about.C.about.X.sup.3 represents CH--N--C.dbd.C or N--C.dbd.C--N; provided that when X.sup.1 -X.sup.2 .about.C.about.X.sup.3 represents N--C.dbd.

Abstract: This invention relates to a novel compound which is useful as a drug in preventing and/or treating peptic ulcer-related diseases, to a production process thereof and to a pharmaceutical composition containing the same.Particularly, it provides a compound which has a specified substituted alkynylpyrazine nucleus or a specified substituted alkynylquinoxaline nucleus, represented by the following formula (I) ##STR1## wherein A is represented by the following formula (II) or (III) ##STR2## and R.sup.1 is represented by the following formula (IV), ##STR3## and the salts thereof, a production process thereof and a pharmaceutical composition containing the same.The inventive compound is useful as a drug in preventing and/or treating peptic ulcer-related diseases.

Abstract: The present invention relates to novel cephalosporin derivatives, processes for preparing thereof, compositions for preventing and/or treating infectious diseases which comprise the novel cephalosporin derivatives as active components, and the intermediate compounds in the synthesis of cephalosporin derivatives and processes for producing thereof.The present invention is based on the selection of groups containing a condensed heterocyclic ring, particularly a triazolopyrimidine ring, as substitutents at the 3-position of the cephem skeleton, and of groups containing a carboxyl and hydroxy substituted phenylmethyloxyimino moiety, particularly a (carboxy substituted catechol)methyloxyimino moiety, as substituents at the 7-position of the cephem skeleton.The compounds of the present invention containing the aforementioned substituents have a strong antibacterial activity against Gram-negative bacteria and also against Gram-positive bacteria including methicillin-resistant Staphylococcus aureus.

Abstract: The present invention relates to novel cephalosporin derivatives and their crystalline form, processes for preparing thereof, compositions for treating and/or preventing infectious diseases which comprise the novel cephalosporin derivatives as active components, and the intermediate compounds in the synthesis of cephalosporin derivatives and processes for producing thereof.The present invention is based on the selection of a triazolopyrimidine ring as substituent at the 3-position of the cephem skeleton, and a 2-carboxy-4,5-dihydroxyphenylmethyloxyimino moiety as substituent at the 7-position of the cephem skeleton.The compounds of the present invention containing these substituents have a wide antibacterial spectrum against Gram-negative bacteria including Pseudomonas aeruginosa and Gram-positive bacteria including methicillin-resistant Staphylococcus aureus. These compounds are extremely useful for the treatment of infectious diseases.

Abstract: An image forming apparatus includes a first sheet supply cassette which is used for automatic feeding and a second sheet supply cassette which is used for either automatic or manual sheet feeding. Both of these cassettes are detachably mounted and house sheets to be used in paper coyping. The second sheet supply cassette has a sheet supply guide which can be switched between a first position for manual feed and a second position for automatic feed. A structure is also provided for selecting which of the first and second cassettes are to be used for feeding, and a control structure generates control signals in response to the condition of the sheet supply cassettes. After the sheets are supplied, an image is formed on the sheets which have been fed.