Abstract: Disclosed herein is cis-oxalato (trans-1-1,2-cyclohexanediamine) Pt(II) optically high purity. Because of its complete optical purity, the compound is effective as raw material of such a medicine as a carcinostatic agent. The complete optical purity of the above compound may be proved by comparing the respective melting points of the cis-oxalato (trans-1-1,2-cyclohexanediamine).

Abstract: Disclosed herein is a process of optically resoluting optically active platinum complex compounds which comprises optically resoluting a d-isomer and an 1-isomer of a cis-Pt(II) complex of a 1,2-cyclohexanediamine isomer characterized in that the mixture of the d-isomer and the 1-isomer is optically resoluted by means of high performance liquid chromatography employing a column packed with a chiral filler.The chiral filler include, for example, a cellulose ester derivative, a cellulose carbamate derivative, an amylose carbamate derivative, a polymethacryl acid ester and .beta.- and .gamma.-cyclodextrin.According to the present invention, the optical resolution of a platinum complex compound essentially consisting of the mixture of two optical isomers which cannot be resoluted in accordance with a normal resolution method due to the small structural difference can be easily performed utilizing the characteristics of a chiral filler.

Abstract: Disclosed herein are a platinum compound employed as raw material of medicines having carcinostatic effects, and a process of preparing the platinum compound. The platinum compound (I) substantially free from impurities can be prepared through a reaction between the corresponding dihalogen compound and an organic dibasic acid employing an iodine compound utilizing the difference of solubilities between the desired compound and the iodine compounds.

Abstract: A method of forming a diamond film on a substrate wherein hydrogen, a hydrocarbon series gas, an inert gas, an organic compound series gas or a mixture of such gases is introduced into a vacuum vessel to contact a substrate and carbon is evaporated by are discharge at a carbon cathode while applying a voltage to the substrate to deposit carbon on the substrate thus forming a diamond film on the substrate. A silicon series gas, a germanium series gas or a mixture thereof may be also introduced into the vessel with the foregoing gas or gases. While the carbon is being deposited on the substrate, thermoelectrons may also be supplied onto the substrate, and, further, high frequency discharge may be generated in a space between the substrate and the cathodes.

Abstract: A sputtering system including a workpiece and at least one target located in a vacuum reaction furnace, wherein a magnetic field is generated between the workpiece and the target and a electric field perpendicular to the magnetic field generated between the workpiece and the target is additionally generated. A plurality of targets may be located around the workpiece and either the workpiece or the targets may be rotated when the magnetron discharge is generated.

Abstract: An articulation detector for articulators of the kind wherein condylar elements mounted on a lower jaw member and glenoid fossae assemblies of an upper jaw member are made of a conductive material, comprises an electric power source, a luminous element and a pair of detecting electrode, all of which are connected in series. The electrodes are adapted to be connected to the lower jaw member and an incisal pin mounted on the upper jaw member of the articulator when the detector is in use. The adjustment of the articulator or prosthetic appliances may be detected by observing the light emitted from the luminous element.

Abstract: New platinum complex represented by the general formula [I]: ##STR1## wherein R.sub.1 and R.sub.2 are same and represent halogen atom or NO.sub.3,orR.sub.1 is SO.sub.4 and R.sub.2 is H.sub.2 O,orR.sub.1 and R.sub.2 are bonded with each other to form either ##STR2## and the configuration of 1-aminomethyl-2-aminocyclohexane is selected from trans-1, trans-d, cis-1 and cis-d.The compounds of the formula [I] are active against tumor and are expected to be useful as medicaments.