Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8182592 | Shell feed type gas separation membrane module A gas separation membrane module has a vessel housing a hollow fiber element including a hollow fiber bundle consisting of a number of hollow fiber membranes (1) and a tube sheet (2) holding one end of the hollow fiber bundle. The interior of the vesse... | 05/22/2012 |
| 8168809 | 2-methyl-3-(3,4-methylenedioxyphenyl)propanal, and method for production thereof Disclosed are: (1) a method for producing 2-methyl-3-(3,4-methylenedioxyphenyl)propanal, which comprises the step of providing a reaction mixture containing 1-acetoxy-2-methyl-3-(3,4-methylenedioxyphenyl)-1-propene by a process for reacting 1,2-methylenedioxybenzene... | 05/01/2012 |
| 8163899 | Process for producing laurolactam Disclosed is a method for producing laurolactam from cyclododecanone and hydroxylamine in a simple process and with high efficiency. The method comprises the following steps (a) to (e): (a) reacting cyclododecanone with hydroxylamine in an aqueous solution in the pr... | 04/24/2012 |
| 8143052 | Process for preparing optically active (S or R)-α amino acid and (R or S)-α amino acid ester in one phase organic reaction medium The present invention discloses a process for preparing an optically active (S or R)-α-amino acid represented by the formula (II): wherein R represents an alkyl group, alkenyl group, alkynyl group,... | 03/27/2012 |
| 8129573 | Method for purifying fermentation alcohol The present invention relates to a method for purifying an aqueous solution of fermentation alcohol to give anhydrous alcohol, wherein a mash column is controlled such a manner that an alcohol concentration of an alcohol/water mixed vapor distilled from a mash colum... | 03/06/2012 |
| 8124273 | Nonaqueous electrolyte solution and lithium secondary battery using same The present invention provides a nonaqueous electrolytic solution exhibiting excellent electrical capacity, long-term cycle property, and storage property in a charged state; and a lithium secondary battery using the nonaqueous electrolytic solution. The nona... | 02/28/2012 |
| 8053109 | Non-aqueous electrolyte secondary battery A non-aqueous electrolyte secondary battery has a high initial capacity and excels in cycle characteristics and storage characteristics even when charged until the potential of the positive electrode active material exceeds as high as 4.3V versus lithium. The non-aq... | 11/08/2011 |
| 8039649 | Method of retaining the quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal and process for producing the same The present invention relates to [1] a method for keeping a quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal useful as a perfume, which comprises incorporating from 50 to 3000 ppm of 1-acetyl-3,4-methylenedioxybenzene in the 2-methyl-3-(3,4-methylenedioxyphe... | 10/18/2011 |
| 8030512 | 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 b... | 10/04/2011 |
| 7985502 | Nonaqueous electrolyte solution and lithium secondary battery using same The present invention provides a lithium secondary battery having excellent battery characteristics such as battery cycling property, electrical capacity and storage property. The present invention relates to a nonaqueous electrolytic solution for lithium sec... | 07/26/2011 |
| 7932400 | Process for preparing imidazolidin-2,4-dione compound and method for acquiring solid state 4,5-dihydroxy-2-imidazolidinone compound An object of the present invention is to provide an industrially suitable process for preparing an imidazolidin-2,4-dione compound which is safe, simple and easy to prepare the imidazolidin-2,4-dione compound with high yield, which is a useful compound, for example,... | 04/26/2011 |
| 7932398 | Substituted phenylethynylgold-nitrogen-containing heterocyclic carbene complex The present invention is directed to a substituted phenylethynylgold-nitrogen-containing heterocyclic carbene complex represented by the formula (1) or (2): wherein L represents a nitrogen-containing heterocyclic carbene li... | 04/26/2011 |
| 7868103 | Method for producing polybutadiene A method for producing a polybutadiene, which comprises subjecting 1,3-butadiene to cis-1,4 polymerization, and subsequently subjecting a resultant in the resulting polymerization system to syndiotactic-1,2 polymerization, the method being characterized in that ther... | 01/11/2011 |
| 7803214 | Asymmetric hollow-fiber gas separation membrane, gas separation method and gas separation membrane module The present invention relates to an asymmetric hollow-fiber gas separation membrane made of a polyimide having a specific repeating unit, an improved tensile elongation at break of 15% or more as a hollow-fiber membrane itself, an oxygen gas permeation rate (P′ | 09/28/2010 |
| 7794876 | Pentafluorophenyloxy compound, and nonaqueous electrolyte solution and lithium secondary battery using same To provide a novel pentafluorophenyloxy compound, a method for producing same, a nonaqueous electrolyte solution capable of forming a lithium secondary battery having excellent battery characteristics such as electrical capacity, cycling property and storage propert... | 09/14/2010 |
| 7781106 | Lithium secondary cell and its nonaqueous electrolyte The invention provides a lithium secondary battery which is excellent in long-term cycle property and in battery characteristics, such as electric capacity and storage property, and a nonaqueous electrolytic solution usable for such a lithium secondary battery. The ... | 08/24/2010 |
| 7754380 | Nonaqueous electrolyte solution and lithium secondary battery using same The present invention provides a nonaqueous electrolytic solution exhibiting excellent battery characteristics such as electrical capacity, cycle property and storage property and capable of maintaining the battery characteristics for a long tire, and a lithium seco... | 07/13/2010 |
| 7745649 | Processes for preparing tetrahydropyran-4-one and pyran-4-one The present invention relates to a process for preparing tetrahydropyran-4-one represented by the formula (1): which comprises reacting at least one kind of dihydropyran-4-one and pyran-4-one represented by the formula (2):... | 06/29/2010 |
| 7727677 | Nonaqueous electrolyte solution and lithium secondary battery using same Disclosed is a lithium secondary battery which is excellent in battery characteristics such as long-term cycle characteristics, capacity and shelf life characteristics. Also disclosed is a nonaqueous electrolyte solution which can be used for such a lithium secondar... | 06/01/2010 |
| 7695863 | Nonaqueous electrolyte solution and lithium secondary battery using same The present invention provides a lithium secondary battery having excellent battery cycle property, electrical capacity, storage characteristic and other battery characteristics for a long period of time, and a nonaqueous electrolytic solution which is usable for th... | 04/13/2010 |
| 7682422 | Method for separating/recovering oxygen-rich air from air, its apparatus and gas separation membrane module A method for separating and recovering oxygen-rich air from the air, comprising, using a gas separation membrane module where a laminate consisting of a permeate-side spacer for forming a permeate gas channel communicated with a hollow section in a core tube for col... | 03/23/2010 |
| 7628841 | Method for manufacturing polyimide asymmetric membrane, and polyimide asymmetric membrane A process of producing an asymmetric membrane of multicomponent polyimide. The process includes the steps of (1) preparing a multicomponent polyimide blend solution by mixing a polyimide component A having a number-averaged polymerization index NA and a p... | 12/08/2009 |
| 7619084 | Process for preparing 4-aminopyrimidine compound The present invention is to provide a process for preparing a 4-aminopyrimidine compound represented by the formula (3): wherein R1 and R2 each represent a hydrogen atom or gro... | 11/17/2009 |
| 7615316 | Nonaqueous electrolytic solution and lithium secondary batteries In order to manufacture a lithium secondary battery having excellent performances in safety under overcharge condition, cycle property, electric capacity, and storage endurance, 0.1 wt. % to 10 wt. % of a tert-alkylbenzene compound is favorably incorporated into a n... | 11/10/2009 |
| 7563850 | Polyelectrolyte compositions An inexpensive and durable polyelectrolyte composition includes both an aromatic polymer containing carbonyl linkages and/or sulfonyl linkages in the backbone chain and bearing cation-exchange groups and a fused salt exhibits a high ionic conductivity even in the ab... | 07/21/2009 |
| 7544445 | Polyelectrolyte membrane and production method therefor A polymer electrolyte membrane comprising a microporous polymer membrane having pores penetrating through the opposite sides thereof. The microporous polymer membrane holds a mixture of a polymer and a molten salt at a weight ratio of 1/99 to 99/1 and/or a molten sa... | 06/09/2009 |
| 7449325 | Process for enzymatically producing either optically active N-substituted β-amino acids or esters thereof or optically active N-substituted 2-homopipecolic acids or esters thereof The present invention discloses a process which comprises selectively hydrolyzing one enantiomer of racemic mixtures of an N-substituted β-amino acid alkyl ester or N-substituted 2-homopipecolic acid ester represented by the formula (I): | 11/11/2008 |
| 7358394 | Process for preparing N,N′-dialkoxy-N, N′-dialkyl oxamide The present invention provides a process for preparing an N,N′-dialkoxy-N,N′-dialkyl oxamide represented by the formula (3): wherein R2 and R3 may be the same or different ... | 04/15/2008 |
| 7300953 | Process for preparing nitrile compound, carboxylic acid compound or carboxylic acid ester compound The present invention discloses a process for preparing a nitrile compound, a carboxylic acid compound or a carboxylic acid ester compound represented by the formula (2): wherein R repres... | 11/27/2007 |
| 7282589 | Acid addition salt of optically active piperidine compound and process for preparing the same (S)-(−)-4-[(4-chlorophenyl)(2-pyridyl)methoxy]piperi-dine represented by the formula (IV): wherein * represents an asymmetric carbon. ... | 10/16/2007 |
| 7273645 | Fluorocopolymer A fluorocopolymer which comprises (A) polymerized units based on tetrafluoroethylene, (B) polymerized units based on ethylene and (C) polymerized units based on itaconic anhydride or citraconic anhydride, wherein the molar ratio of (A)/(B) is from 20/80 to 80/20, an... | 09/25/2007 |
| 7256304 | Process for producing 3-unsubstituted 5-amino-4-nitrosopyrazole compound, and 2-hydroxyimino-3-oxopropionitrile, 3-hydrazono-2-hydroxyiminopropionitrile compound, and processes for producing these The present invention is to provide a process for preparing a 3-unsubstituted-5-amino-4-nitrosopyrazole compound represented by the formula (1): wherein R1 represents a hydroge... | 08/14/2007 |
| 7205367 | Fluorocopolymer A fluorocopolymer which comprises (a) polymerized units based on tetrafluoroethylene and/or chlorotrifluoroethylene, (b) polymerized units based on a fluorinated monomer (excluding tetrafluoroethylene and chlorotrifluoroethylene) and (c) polymerized units based on a... | 04/17/2007 |
