Featured patents

Asymmetric Synthesis of Norcantharidin Analougus by Alkynylation of Oxabenzonorbornadienes and Their Anticancer Activities
US 08835658 B2, Sept. 16, 2014, Two of the cyclos share at least three ring members, Jun Hu et al. / Hong Kong Baptist University (Kowloon, HK)
A method of synthesizing norcantharidin analogues comprising the structure…

Process for In-Situ Electrochemical Oxidative Generation and Conversion of Organosulfur Compounds
US 08871951 B2, Oct. 28, 2014, Chalcogen attached directly to ring sulfur of the hetero ring by nonionic bonding, Emad Naji Al-Shafei / Saudi Arabian Oil Company (Dhahran, SA)
A process for converting organosulfur compounds in a liquid hydrocarbon feedstock…

Method of Preparing Lactide From Lactate
US 08759545 B2, June 24, 2014, Plural ring oxygens in the lactone ring, Chae Hwan Hong et al. / Hyundai Motor Company (Seoul, KR)
A method of preparing lactide, the method comprising:…

Diyne Compositions
US 08722910 B2, May 13, 2014, The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens, Alexandre M P Santana Sørenson et al. / Evolva AG (Reinach, CH)
A crystalline diyne compound of the formula I:…

Intermediates Useful in the Preparation of Maleimide Functionalized Polymers
US 08653286 B2, Feb. 18, 2014, Nitrogen attached directly or indirectly to the hetero ring by acyclic nonionic bonding, Tracy L. Hutchison et al. / Nektar Therapeutics (San Francisco, US)
A composition comprising (i) a compound of the following structure:…

Ketal Ester Derivatives
US 08575367 B2, Nov. 5, 2013, Plural hetero rings, Brian Daniel Mullen et al. / Segetis, Inc. (Golden Valley, US)
A polycarbonate one or more repeat units IA, IB, or a combination thereof:…

Compounds, Compositions and Methods for Preventing Skin Darkening
US 08563754 B2, Oct. 22, 2013, Plural ring oxygens in the tricyclo ring system, Li Ni Komatsu et al. / New York University (New York, US)
A method for preventing the hyperpigmentation or undesired darkening of skin…

Organic Sensitizers
US 08487119 B2, July 16, 2013, Tricyclo ring system having the hetero ring as one of the cyclos, Shaik Mohammad Zakeeruddin et al. / Ecole Polytechnique Federale de Lausanne (EPFL) (Lausanne, CH
An organic dye of formula (1):…

Compounds and Their Salts Specific to the PPAR Receptors and the EGF Receptors and Their Use in the Medical Field
US 08450506 B2, May 28, 2013, Additional acyclic chalcogen bonded directly to the lactone ring, Giancarlo Naccari et al. / Nogra Pharma Limited (Dublin, IE)
A compound of the general formula (I)…

Photochromic and Electrochromic Compounds and Methods of Synthesizing and Using Same
US 08450503 B2, May 28, 2013, Tetracyclo ring system having the hetero ring as one of the cyclos, Anthony J. Wigglesworth et al. / Switch Materials Inc. (Vancouver, CA)
A compound reversibly convertible between a ring-open isomer (I)and a ring-closed…

Patentorg has 431 documents under Carbon Compounds: Chalcogen or Nitrogen Are the Only Ring Hetero Atoms Patents.

Narrow down the browsing criteria below to see more patents.

Select a subcategory
Quick navigation
New documents
  • Process for the Production of the Actinobacillus Pleuropneumoniae Toxins APXI or APXIII in a Liquid Culture Medium Under Supply of Air Enriched in Carbon Dioxide
  • Method for Manufacturing Nonvolatile Memory Device
  • Supply Chain Demand Satisfaction
  • Supply-Line Management Device
  • Storage Control Device and Method for Managing Snapshot