| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 562045000 |
Benzene ring bonded directly to the sulfonate sulfur (e.g., purification and neutralization of benzene sulfonic acids, etc.)
| 33 |
| 562115000 |
Processes (e.g., neutralization, stabilization, etc.)
| 13 |
| 562104000 |
Nitrogen attached indirectly to the sulfonate group by acyclic nonionic bonding
| 13 |
| 562101000 |
Plural sulfonate groups attached indirectly to each other by acyclic nonionic bonding
| 12 |
| 562113000 |
Halogen attached indirectly to the sulfonate group by acyclic nonionic bonding
| 12 |
| 562041000 |
Benzene ring attached indirectly to the sulfonate group by acyclic nonionic bonding
| 8 |
| 562108000 |
Chalcogen attached indirectly to the sulfonate group by acyclic nonionic bonding
| 7 |
| 562114000 |
Addition salts having organic nitrogen containing cation | 2 |
| 20110105788 | Polymorphic Form of an Aminoindan Mesylate Derivative - The invention relates to a polymorphic form of rasagiline mesylate, and to processes for preparing the same. | 05-05-2011 |
| 20150080601 | ISOMERIZED ALPHA OLEFIN SULFONATE AND METHOD OF MAKING THE SAME - The present invention is directed to an isomerized alpha olefin sulfonate and a method of making the same wherein the isomerized alpha olefin sulfonate is derived from sulfonating an isomerized alpha olefin with sulfur trioxide in the presence of air thereby producing an isomerized alpha olefin sulfonic acid, wherein the isomerized alpha olefin is derived from the isomerization of C | 03-19-2015 |
| 562037000 |
Nitrogen attached directly to the sulfonate sulfur by nonionic bonding (e.g., sulfamic acids, etc.) | 2 |
| 20120004447 | Ammonium Fluoroalkanesulfonates and a Synthesis Method Therefor - An ammonium hydroxyfluoroalkanesulfinate is obtained by using an organic base while sulfinating a bromofluoroalcohol with a sulfinating agent. An ammonium hydroxyfluoroalkanesulfonate is obtained by oxidizing the ammonium hydroxyfluoroalkanesulfinate. An onium fluoroalkanesulfonate is obtained by converting the ammonium hydroxyfluoroalkanesulfonate into an onium salt through esterification. This onium fluoroalkanesulfonate is useful as a photoacid generator in chemically amplified resists and the like. | 01-05-2012 |
| 20100063317 | METHOD FOR THE PREPARATION OF OPTICALLY ACTIVE 2-SULFONYLOXY-1-PHENYLETHANOL DERIVATIVES - Optically active 2-sulfonyloxy-1-phenylethanol derivative of formula (II) can be prepared easily and selectively by the method of the present invention using an asymmetric reduction of an α-sulfonyloxy acetophenone compound with a rhodium catalyst having petamethylcyclopentadienyl group and a hydrogen donor, and the compound of formula (II) obtained in the inventive method exhibits a higher e.e. (enantiomer excess) value than that of the products in the conventional methods. | 03-11-2010 |
| 562100000 |
Polycyclo alicyclic ring system attached directly or indirectly to the sulfonate group by nonionic bonding | 1 |
| 20100081839 | PROCESS FOR PREPARATION OF CRYSTALLINE CLOPIDOGREL HYDROGEN SULPHATE FORM I - The present invention describes an improved industrial process for crystallizing out polymorph ‘Form I’ of (+) clopidogrel hydrogen sulphate (also called clopidogrel bisulphate) in) from either a Type-1 solvent or liquid characterized by comprising two or more functional groups or their mixtures thereof; or a Type-II solvent and/or solvent mixture selected from the group of methyl ethyl ketone, cyclopentylmethyl ether, dipropylglycolether, dibutylglycol ether, propylmethyl cellosolve, butylmethylcellosolve, propylethylellosolve, butylethylcellosolve or their cross combinations in a reproducible manner without detectable contamination of polymorph designated as ‘Form II’. The invention also discloses improvements in the preparation of clopidogrel free base and process for recovery and recycling of resolving agent camphor sulphonic acid. | 04-01-2010 |
| 562036000 |
Chalcogen or -C(=X)-, wherein X is chalcogen, attached directly to the sulfonate sulfur by nonionic bonding | 1 |
| 20090216043 | Arylglycerine Ether - The invention relates to aromatically substituted glycerine ethers of formula (I), | 08-27-2009 |
| Entries |
| Document | Title | Date |
|---|
| 20110021812 | Process For Preparing Solid Alkaline Earth Metal Salts Of Secondary Paraffinsulphonic Acids - A process for preparing solid alkaline earth metal salts of secondary paraffinsulphonic acids is claimed. This process comprises converting an aqueous solution of a secondary paraffinsulphonic acid and an alkaline earth metal hydroxide into solid form by spray drying. | 01-27-2011 |
| 20140058128 | PRODUCTION OF HIGHER HYDROCARBONS FROM A METHANE CONVERSION PROCESS - Methods and systems are provided for converting methane in a feed stream to acetylene. The hydrocarbon stream is introduced into a supersonic reactor and pyrolyzed to convert at least a portion of the methane to acetylene. The reactor effluent stream is further processed to generate larger hydrocarbons in a second reactor. The reactor effluent stream can be processed before the second reactor to remove waste products such as carbon monoxide and nitrogen in the reactor effluent stream. | 02-27-2014 |
| 20140256978 | USE OF SULFONIC ACID FOR RECOVERING GLYCEROL RESULTING FROM THE TRIGLYCERIDE TRANSESTERIFICATION REACTION - The present invention relates to the use of at least one sulfonic acid for recovering glycerol resulting from a reaction crude from transesterification of glycerides, in particular of triglycerides of vegetable and/or animal origin. The invention also relates to a process for purifying glycerol obtained as a by-product of triglyceride transesterification during the preparation of fatty acids, fatty esters and/or fatty acid salts, and also to a combined process for preparing, on the one hand, fatty acids, fatty esters and/or fatty acid salts and, on the other hand, glycerol, from triglycerides, using at least one sulfonic acid. | 09-11-2014 |
