Featured patents

Production of Cyclic Acetals or Ketals Using Solid Acid Catalysts
US 08829206 B2, Sept. 9, 2014, Plural ring oxygens in the hetero ring, Daniel Latham Terrill et al. / Eastman Chemical Company (Kingsport, US)
A process for making a cyclic compound composition comprising:…

Surfactant-Enabled Transition Metal-Catalyzed Chemistry
US 08785665 B2, July 22, 2014, Chalcogen of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens, bonded directly to the carbocyclic ring of the bicyclo ring system, Volker Berl / Mycell Technologies, LLC (Paramus, US)
A mixture comprising (a)…

Method to Convert Biomass to 5-(Hydroxymethyl)-Furfural (HMF) and Furfural Using Lactones, Furans, and Pyrans as Solvents
US 08772515 B2, July 8, 2014, Preparation of furfural, Jean Marcel Ribeiro Gallo et al. / Wisconsin Alumni Research Foundation (Madison, US)
A process to produce 5-hydroxymethylfurfural (HMF), the process comprising:…

Photochromic Dichroic Naphtho-Pyrans and Optical Articles Containing Them
US 08703978 B2, April 22, 2014, Naphtho-pyrans (including hydrogenated), Stuart Aiken et al. / Essilor International (Compagnie Generale d'Optique) (Charenton-le-Pont, FR
A naphthopyran compound represented by the formulae (I) to (II)…

Process for Preparation of Taxane Derivatives
US 08686165 B2, April 1, 2014, The hetero ring is four-membered, Swapnil P. Sonawane et al. / Emcure Pharmaceuticals Limited (Pune, IN)
A process for the preparation of a taxane derivative comprising…

Tetrahydropyranochromene Gamma Secretase Inhibitors
US 08664411 B2, March 4, 2014, Plural ring oxygens in the tricyclo ring system, Hubert B. Josien et al. / Merck Sharp & Dohme Corp. (Rahway, US)
A compound of the formula:…

Method for Making Insect Repellent Composition
US 08633325 B2, Jan. 21, 2014, Bicyclo ring system having the lactone ring as one of the cyclos, David L. Hallahan et al. / E I du Pont de Nemours and Company (Wilmington, US)
A method of preparing a composition comprising a dihydronepetalactone,…

Tertiary Alcohol Derivative, Polymer Compound and Photoresist Composition
US 08541606 B2, Sept. 24, 2013, Plural hetero rings, Takashi Fukumoto et al. / Kuraray Co., Ltd. (Kurashiki-shi, JP)
A tertiary alcohol represented by formula (3):…

Bryostatin Analogues, Synthetic Methods and Uses
US 08497385 B2, July 30, 2013, Plural ring oxygens in the hetero ring, Paul A. Wender / The Board of Trustees of the Leland Stanford Junior University (Palo Alto, US)
A compound of Formula I…

Preparation Process of Dronedarone and Its Salts
US 08481763 B2, July 9, 2013, Having -C(=X)-, wherein X is chalcogen, bonded directly to the hetero ring, Yongjiang Chen et al. / Jiangsu Hengrui Medicine Co., Ltd. (Lianyungang, Jiangsu, CN)
A process for preparing dronedarone hydrochloride, wherein the process comprises…

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