| Patent application number | Description | Published |
|---|
| 20090098039 | Silicon Production Method - There is provided a silicon production method which comprises producing semiconductor grade silicon while producing solar grade silicon by converting a portion of trichlorosilane into silicon for solar cells. | 04-16-2009 |
| 20090171083 | PROCESS FOR PRODUCING 4-AMINOQUINAZOLINE COMPOUND - A 4-aminoquinazoline derivative can be obtained by the steps of reacting quinazolin-4-one or its derivative with a chlorinating agent in a first organic solvent in the presence of an organic base, and subsequently reacting the reaction product with an amine compound represented by the formula R | 07-02-2009 |
| 20090253909 | PROCESS FOR PREPARATION OF 6, 7-BIS (2-METHOXYETHOXY) QUINAZOLIN-4-ONE - 6,7-Bis(2-methoxyethoxy)quinazolin-4-one of formula (5) useful in synthesis of an anti-cancer drug can be prepared by a reaction of ethyl 2-amino-4,5-bis(2-methoxyethoxy)benzoate of formula (4) with an orthoformic acid in the presence of an ammonium acetate: | 10-08-2009 |
| 20090306399 | METHOD FOR PRODUCING 1-SUBSTITUTED-5-ACYLIMIDAZOLE COMPOUND - Disclosed is a commercially suitable method for producing a 1-substituted-5-acylimidazole compound. A 1-substituted-5-acylimidazole compound is produced with a high position selectivity by reacting an N-substituted amidine compound or a salt thereof with a ketone compound in the presence of a base. | 12-10-2009 |
| 20090311450 | Tubular container made of carbon - It is an object of the present invention to prevent leakage of a raw material gas or molten silicon in a carbon columnar container which is constructed by connecting plural carbon cylindrical members to each other by a screw portion provided along the periphery of an end of each of the cylindrical members, by sealing a gap present at the connection portion through a high-reliability method that causes no cracking or the like. The carbon columnar container of the invention is a carbon columnar container constructed so as to form a multistage structure by connecting plural carbon cylindrical members to each other by a screw portion provided along the periphery of an end of each of the cylindrical members, wherein each of the cylindrical members connected to each other has such a ring-shaped plane extending from the inner peripheral wall in the diameter direction as to form a ring-shaped butt area on the inner peripheral wall side when the cylindrical members are connected, and the sum of surface roughness (Ra) of the ring-shaped planes to form the butt area is in the range of 1 to 100 μm. | 12-17-2009 |
| 20100099909 | POLYCYCLIC PENTAFLUOROSULFANYLBENZENE COMPOUND AND PROCESS FOR PRODUCING THE COMPOUND - A polycyclic pentafluorosulfanylbenzene compound represented by the following general formula (1) and a process for producing the polycyclic pentafluorosulfanylbenzene compound which comprises reacting a specific pentafluorosulfanylbenzene compound with a specific boronic acid compound are provided. The polycyclic pentafluorosulfanylbenzene compound is a novel compound and can be produced by the process industrially advantageously. | 04-22-2010 |
| 20110268892 | PROCESS FOR PRODUCING POLYCRYSTALLINE SILICON - [Problem] To provide a process for producing polycrystalline silicon, which is capable of effectively preventing the formation of phosphorus-silicon compounds in the discharge gas discharged from the reaction vessel, and makes it possible to reuse a silane compound contained in the discharge gas. | 11-03-2011 |
| 20110274926 | POLYCRYSTALLINE SILICON ROD AND APPARATUS FOR PRODUCING THE SAME - [Problems] To provide a polycrystalline silicon rod used for the recharging in the FZ method or the CZ method, the straight body portions thereof assuming an easily transferable shape and excelling in transferability. | 11-10-2011 |
