Abstract: To provide an organic semiconductor of tetrathiafulvalene derivative and an organic thin-film transistor formed therefrom, the tetrathiafulvalene derivative being readily formed into a stable thin film and the organic thin-film transistor having a high mobility and being driven at a low threshold voltage, an organic semiconductor includes a hexamethylenetetrathiafulvalene compound represented by the formula (1) below, and an organic thin-film transistor having a thin film obtained therefrom (where R1 and R2 each independently denote an alkyl group which may have a C1-10 branched structure).

Abstract: To provide an organic semiconductor of tetrathiafulvalene derivative and an organic thin-film transistor formed therefrom, the tetrathiafulvalene derivative being readily formed into a stable thin film and the organic thin-film transistor having a high mobility and being driven at a low threshold voltage, an organic semiconductor includes a hexamethylenetetrathiafulvalene compound represented by the formula (1) below, and an organic thin-film transistor having a thin film obtained therefrom (where R1 and R2 each independently denote an alkyl group which may have a C1-10 branched structure).

Abstract: This describes the following five novel organic substances: Bis (ethylenedithio) tetrathiafulvalene (henceforth to be called BEDT-TTF) compounded with cyanometalate anions in what is called Tetracyano Nickel acid Bis (Ethylenedithio) Tetrathiafulvalene salt.hydrate expressed by (BEDT-TTF).sub.4 [Ni(CN).sub.4 ].H.sub.2 O, Tetracyano Platinum acid Bis (Ethylenedithio) Tetrathiafulvalene salt.hydrate that is expressed by (BEDT-TTF).sub.4 [Pt(CN).sub.4 ].H.sub.2 O, Cyanide Palladium Bis (Ethylenedithio) Tetrathiafulvalene salt that is expressed by (BEDT-TTF)-[Pd(CN).sub.2 ], Tetracyano Palladium acid Bis (Ethylenedithio) Tetrathiafulvalene salt.hydrate that is expressed by (BEDT-TFF).sub.4 [Pd(CN).sub.4 ].H.sub.2 O and Tetracyano Palladium acid Bis (Ethylenedithio) Tetrathiafulvalene salt that is represented by (BEDT-TTF).sub.4 [Pd(CN).sub.4 ]. BEDT-TTF, acting as a common constituent in the crystals of all of the above substances, provides the properties of an insulator, a metal or a superconductor.

Abstract: A pulse discriminating circuit discriminates narrow input pulses from an input pulse signal for eliminating output pulses corresponding to the narrow pulses from an output pulse signal thereof, and comprises a delay unit supplied with the input pulse signal for introducing predetermined time delay into propagation of the input pulse signal in synchronism with a two-phase clock signal, and an eliminating unit responsive to output signals of the delay unit and operative to produce the output pulse signal consisting of output pulses corresponding to wide input pulses, wherein the delay unit comprises early stages responsive to the two-phase clock signal for transferring the input pulse signal, and later stages responsive to a transfer signal lower in frequency than the two-phase clock signal for transferring the input pulse signal so that the predetermined time delay is prolonged without increase the stages of the delay unit.

Abstract: A fulvalene derivative represented by formula (1) below. ##STR1## where A.sup.1 -A.sup.8 are at least one atom or a combination of two or more atoms selected from S atom, Se atom, and Te atom; and R.sup.1 -R.sup.4 are alkyl or alkene having 3 to 22 carbon atoms.The fulvalene derivative of this invention has electric conductivity as it is at normal temperature and under normal pressure. It is useful as a semiconductor, which has an electrical conductance greater than 10.sup.-9 Scm.sup.-1 and a minimum specific resistance of 10.sup.5 .OMEGA..multidot.cm order.

Abstract: A filtering apparatus includes a plurality of disc-type filtering elements stacked in parallel with each other. Each disc-type filtering element has one or more annular projections thereon facing an adjacent disc defining a filtering slit. One or more fluid passages define a filtering path therethrough. Fine particles are filtered from a fluid by the slits between the adjacent filtering elements. Adjustment of the slit widths permits trapped particles to be removed by back-washing. A power cylinder permits automatic filtering and back-washing.

Abstract: In feeding a strip of continuous forms including forms arranged in a plurality of layers and having a plurality of series of perforations extending widthwise of the strip and arranged at regular intervals lengthwise of the strip, the strip is bent at one of the series of perforations to provide a bent portion, and a member is located inwardly of the bent portion of the strip for movement toward and away from the bent portion of the strip. When the member is brought into contact with the bent portion of the strip, the upper and lower layers of the strip are brought into alignment with one another through the series of perforations.