| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 549041000 |
Polycyclo ring system having the hetero ring as one of the cyclos
| 69 |
| 549074000 |
Nitrogen attached indirectly to the hetero ring by nonionic bonding
| 47 |
| 549059000 |
Additional hetero ring containing
| 28 |
| 549030000 |
Plural ring hetero atoms in the hetero ring
| 21 |
| 549070000 |
Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring
| 17 |
| 549078000 |
Chalcogen attached indirectly to the hetero ring by nonionic bonding
| 14 |
| 549062000 |
Chalcogen bonded directly to ring carbon of the hetero ring
| 12 |
| 549068000 |
Nitrogen attached directly to the hetero ring by nonionic bonding | 5 |
| 20150148550 | NOVEL COMPOUNDS AS CHLORIDE CHANNEL BLOCKING AGENT - Disclosed is a novel compound to function as a calcium-dependent chloride channel blocking agent. | 05-28-2015 |
| 20090082579 | 2-ALKENYL-3-AMINOTHIOPHENE DERIVATIVE AND PROCESS FOR PRODUCING THEREOF - Disclosed is a method for commercially producing 2-alkenyl-3-aminothiophene derivatives, which are useful as intermediates for agricultural chemicals, at low cost. Specifically disclosed is a method for introducing alkenyl groups into the 2-position of 3-aminothiophene derivatives by reacting 3-aminothiophene derivatives represented by the general formula (2) below or salts thereof with a ketone represented by the general formula (1) below without using a protecting group. Also specifically disclosed are 2-alkenyl-3-aminothiophene derivatives (3a) to (3d) which are useful as intermediates for agricultural chemicals, | 03-26-2009 |
| 20090156833 | Process for the Preparation of Enantiomerically Pure 1-Substituted-3-Aminoalcohols - A process for the preparation of N-monosubstituted β-aminoalcohol sulfonates of formula (Ia), (Ib): | 06-18-2009 |
| 20090326247 | METHOD FOR PRODUCING 2-ALKYL-3-AMINOTHIOPHENE DERIVATIVE - The present invention provides a method of producing a 2-alkyl-3-aminothiophene derivative represented by formula (2) by reducing at least one of the 2-alkenyl-3-aminothiophene derivatives represented by formulae (1a) to (1d), or a mixture thereof, or a salt thereof, without using a protecting group for an amino group: | 12-31-2009 |
| 20140018548 | CATALYST FOR ASYMMETRIC HYDROGENATION OF IMINE, SYNTHESIS METHOD AND APPLICATION THEREOF - A chiral hydrogenated H | 01-16-2014 |
| 549061000 |
Cyano bonded directly to the hetero ring | 5 |
| 20090082578 | Process for the synthesis of strontium ranelate and its hydrates - A process for the industrial synthesis of strontium ranelate of formula (I): | 03-26-2009 |
| 20090137822 | Process for preparing 3-substituted thiophene - The present invention relates to a process for preparing a 3-substituted thiophene represented by the formula (2): | 05-28-2009 |
| 20110275834 | POLYMORPH OF STRONTIUM RANELATE AND A PROCESS FOR ITS PREPARATION - This invention discloses Strontium Ranelate polymorph, designated as Form A, having a characteristic powdered x-ray diffraction pattern and infrared spectrum with a water content of about 1.5 to 2.5% and a process for its preparation. | 11-10-2011 |
| 20120029210 | Process for the synthesis of strontium ranelate and its hydrates - Process for the industrial synthesis of strontium ranelate of formula (I): | 02-02-2012 |
| 20130310573 | PROCESS FOR THE PREPARATION OF STRONTIUM RANELATE - Strontium ranelate is prepared by reacting dicyclohexylammonium ranelate with strontium halide in an anhydrous solvent. Strontium ranelate thus obtained will have less than 3% moisture content. | 11-21-2013 |
| 549087000 |
Plural chalcogens double bonded directly to ring sulfur of the hetero ring | 5 |
| 20090005578 | HIGH SHEAR PROCESS FOR THE PRODUCTION OF BUTADIENE SULFONE - Use of a high shear mechanical device incorporated into a process for the production of sulfolene as a reactor device is capable of decreasing mass transfer limitations, thereby enhancing the sulfolene production process. A system for the production of sulfolene from butadiene and sulfur dioxide, the system comprising a reactor and an external high shear mixer the outlet of which is fluidly connected to the inlet of the reactor; the high shear mixer capable of providing a dispersion of sulfur dioxide gas bubbles within a liquid, the bubbles having an average bubble diameter of less than about 100 μm. | 01-01-2009 |
| 20110288307 | METHOD FOR MANUFACTURING SULFOLENE COMPOUND AND METHOD FOR MANUFACTURING SULFOLANE COMPOUND - An object of the present invention is to provide a method for manufacturing a sulfolene compound, the method being capable of inhibiting generation of polymers. Another object of the present invention is to provide a method for manufacturing a sulfolane compound, the method being capable of controlling inhibition of hydrogenation catalyst activity and smoothly hydrogenating a sulfolene compound. | 11-24-2011 |
| 20120165551 | Process and Apparatus for Online Rejuvenation of Contaminated Sulfolane Solvent - A continuous online process for rejuvenating whole stream of contaminated lean sulfolane in an extraction system is provided. A rejuvenator is installed in the solvent circulation loop to remove the contaminants continuously to keep the solvent clean, effective and less corrosive. The rejuvenator includes a high pressure vessel with a removable cover and a round rack with vertical stainless steel tubes fitted in the high pressure vessel. A magnetic bar is placed in each stainless steel tube. A screen cylinder is installed outside the ring of stainless steel tubes. As the contaminated sulfolane is passed through the rejuvenator, the rejuvenator picks up contaminants. The rejuvenator can be dissembled to remove the contaminants periodically. The rejuvenator is simple in construction, reliable in operation, and low in operation and maintenance costs. With this rejuvenator, the extraction system operates at high efficiency and high capacity without the dreaded corrosion. | 06-28-2012 |
| 20130225838 | Regeneration of Selective Solvents for Extractive Processes - Recovering a polar hydrocarbon (HC) selective solvent substantially free of hydrocarbons (HCs) and other impurities from a lean solvent stream containing the selective solvent, measurable amounts of heavy aromatic HCs, and polymeric materials that are generated in an extractive distillation (ED) or liquid-liquid extraction (LLE) process. At least a portion of the lean solvent stream is contact in a solvent clean-up zone with a slip stream from the HC feed stream of the ED or LLE process or an external stream. The HC feed stream, such as pyrolysis gasoline or reformate, contains significant amounts of benzene and at least 50% polar (aromatic) HCs and serves as a displacement agent to remove the heavy HCs and polymeric material from the lean solvent stream. A magnetic filter can be used to remove the paramagnetic contaminants from the lean solvent. | 08-29-2013 |
| 20160376250 | BUTADIENE SEQUESTRATION VIA SULFUR DIOXIDE CHARGED ZEOLITE BEDS - In an example, a method of butadiene sequestration includes receiving an input stream that includes butadiene. The method includes directing the input stream to a first sulfur dioxide charged zeolite bed for butadiene sequestration via a first chemical reaction of butadiene and sulfur dioxide to form sulfolene. | 12-29-2016 |
| 549083000 |
The compound consists of the ring sulfur, carbon, and hydrogen | 2 |
| 20100217015 | Process for the preparation of substituted heteroaromatics - A process is described for the preparation of substituted heteroaromatics of the general formula (I) | 08-26-2010 |
| 20140012018 | SULFOLANE COMPOSITION - The present invention aims to provide, with combination of a sulfolane compound and an organic alkanolamine compound, a sulfolane composition which is not likely to cause odor, can suppress pyrolysis of the sulfolane compound with a reduced amount of additives, and can reduce generation of sulfur dioxide. The present invention relates to a sulfolane composition containing a sulfolane compound represented by formula (1) and an organic alkanolamine compound, wherein R | 01-09-2014 |
| 549081000 |
Halogen attached directly to the hetero ring by nonionic bonding | 1 |
| 20090259053 | PROCESS FOR BROMINATING ALKYLTHIOPHENES - What is described is a process for brominating alkylthiophene, in which an alkylthiophene of the general formula (I) | 10-15-2009 |
| 549080000 |
Unsaturated carbocyclic ring or acyclic carbon to carbon unsaturation containing | 1 |
| 20100004467 | COMPOUNDS COMPRISING A LINEAR SERIES OF FIVE FUSED CARBON RINGS, AND PREPARATION THEREOF - The present application discloses methods for the production of organic compounds comprising a linear series of five fused carbon rings. Such compounds are useful in the production of electronic components, devices and materials. For example the methods disclosed permit the production of 2,9- and 2,10-disubstituted pentacene compounds and 2,6,9,13- and 2,6,10,13-tetrasubstituted compounds that present particularly advantageous properties for the manufacture of semiconductor materials, and may be used in devices such as for example thin film transistors and solar cells. These features are enhanced by π-π parallel stacking in the solid state. Also disclosed are compounds that are excellent candidates for use in the manufacture of semiconductor materials, and other components of electronic systems, by virtue of their solubility, crystal packing geometries, and electronic properties. | 01-07-2010 |
