Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7572931 | Process for the preparation of highly purified, dialkydithiophosphinic compounds An improved process for production of dialkyldithiophosphinic acid including sulfurizing a purified dialkylphosphinic acid by: reacting a hypophosphorous acid or salt with a stoichiometric excess of an alpha olefin in the presence of a free radical initiator to form... | 08/11/2009 |
| 7368596 | Process for producing zinc dialkyldithiophosphates exhibiting improved seal compatibility properties In general terms, the present invention includes a process for producing a new zinc dialkyldithiophosphate (ZDDP) offering improved seal compatibility characteristics in engine and transmission oil packages. The present invention additionally includes zinc dialkyldi... | 05/06/2008 |
| 7317260 | Wind flow estimation and tracking using tower dynamics A turbine control system for a variable speed electrical generator in a wind turbine mounted atop a support tower. The wind turbine converts wind energy into a driving torque applied to the generator. The control system includes a turbine support tower position sens... | 01/08/2008 |
| 7081544 | Chiral ligands, transition metal complexes thereof, and the catalytic use of the same The invention relates to novel chiral ligands of formula (I), the production thereof and the use of the same in catalytic reactions. ... | 07/25/2006 |
| 6951960 | Method for removing impurities from solvent extraction solutions A method for regenerating an amine extractant used for recovery of metals involves contacting a liquid organic phase containing an amine complexed with one or more metals with an aqueous solution substantially free of chloride ions to strip the one or more metals fr... | 10/04/2005 |
| 6943267 | Thiophosphonate inhibitors of phosphatase enzymes and metallophosphatases Compounds of the general formula wherein R is selected from the group consisting essentially of hydrogen, methyl, ethyl, phenyl, a carboxyl, or naphthyl substituted or a carbonyl substituted, alkyl of from 3 to 20 carb... | 09/13/2005 |
| 6022991 | Hydrogen-free regeneration of dithiophosphorus metal extractants This is a method of regenerating dithiophosphorus acids from disulfides containing sulfur--sulfur bonds, formed by oxidation of dithiophosphorus acids, such as sulfur--sulfur bonding of dithiophosphoric, dithiophosphonic and dithiophosphinic acids, in a s... | 02/08/2000 |
| 5872279 | Bis(1,1,3,3-tetramethylbutyl) phosphinic acid compound, a production method thereof and an extracting agent A bis(1,1,3,3-tetramethylbutyl)phosphinic acid compound represented by the formula (1) and an extracting agent using the same for separating Co from an aged electroless Ni plating solution. A di(1,1,3,3-tetramethylbutyl)phosphine is produced by carrying o... | 02/16/1999 |
| 5707979 | Phosphinic acid derivatives, their preparation and their use Compounds of the formula I, ##STR1## in which the symbols or substituents A, B, D, D*, E and E* have the meanings given in the specification, inhibit aspartyl proteases and are suitable for controlling viral diseases.... | 01/13/1998 |
| 5648349 | PLA2 inhibitors PLA2 inhibitors selected from the group consisting of ##STR1## wherein A is selected from the group consisting of ##STR2## and Z, W, R1, R2, R3, R4, R5, R6, R7, ... | 07/15/1997 |
| 5635608 | -carboxy caged compounds The invention relates to caged compounds for the study of biological processes, where the caged compound has a photoremoveable -carboxy-substituted o-nitrobenzyl group. Covalent attachment of the substituted o-nitrobenzyl to a parent compound yield... | 06/03/1997 |
| 5571937 | Complementary DNA and toxins This invention relates to new derivatized solid supports and compounds having the formula: ##STR1## wherein S may be a solid support; L may be a chemical bond or a suitable inorganic or organic linker; Z may be --SO2 -- or --S--S--; R may ... | 11/05/1996 |
| 5510510 | Inhibitors of farnesyl protein transferase Inhibition of farnesyl transferase, which is an enzyme involved in ras oncogene expression, and inhibition of cholesterol biosynthesis, are effected by compounds of the formula ##STR1## their enantiomers, diastereomers, and pharmaceutically acceptabl... | 04/23/1996 |
| 5434288 | PLA2 inhibitors PLA2 inhibitors selected from the group consisting of ##STR1## wherein A is selected from the group consisting of ##STR2## and Z, W, R1, R2, R3, R4, R5, R6, R7, ... | 07/18/1995 |
| 5212164 | Phosphorus-containing squalene synthetase inhibitors Compounds which are inhibitors of cholesterol biosynthesis (by inhibiting de novo squalene biosynthesis), and thus are useful as hypocholesterolemic agents and antiatherosclerotic agents are provided which have the structure ##STR1## wherein m i... | 05/18/1993 |
| 5177240 | o-Phosphono(alkyl)-N-sulfonyl-phenyl-alanine derivatives useful as intermediates for preparation of phosphono-hydroisoquinolines A class of phosphono-hydroisoquinoline compounds is described for treatment to reduce neurotoxic injury associated with anoxia or ischemia which typically follows stroke, cardiac arrest or perinatal asphyxia. The treatment includes administration of a pho... | 01/05/1993 |
| 5100654 | Phosphorylated derivatives of L-dopa and compositions and methods for increasing the melanin content in mammalian skin and hair A phosphorylated derivative of L-dopa of the formula ##STR1## wherein when X is ##STR2## wherein Z is --CH2, N, S or a linkage other than oxygen which renders the phosphate group resistant to hydrolysis by phosphatase enzymes in ... | 03/31/1992 |
| 5072032 | Preparation and use of thiophosphonates and thio-analogues of phosphonoformic acid Methods for converting phosphonates into thiophosphonates and specific thiophosphonate compounds so produced are disclosed and claimed. The methods start with a reaction mixture formed of a phosphonate compound, including one or more strong electron-withd... | 12/10/1991 |
| 4752648 | Process for making chlorophosphines and thiophosphinic acid chlorides, and 9-chloro-9-thioxo-9-phosphabicyclononanes Chlorophosphines or thiophosphinic acid chlorides of the general formulae RPCl2, R2 PCl or R2 P(.dbd.S)Cl are made from feed materials selected from hydrogen-functional primary or secondary phosphines or secondary phosphin... | 06/21/1988 |
| 4751028 | Process for the preparation of thiophosphinic chlorides A process for the production of a chloride of thiophosphinic acids which comprises reacting an anhydride of a phosphinic acid with thiophosphoryl chloride.... | 06/14/1988 |
| 4721802 | Dithiophosphorus/amine salts Phosphorus, sulphur and nitrogen containing salts prepared from dithiophosphorus compounds and amines are disclosed, which salts find utility in aqueous functional fluids. Compositions comprising a continuous aqueous phase, at least one of said salts prep... | 01/26/1988 |
| 4719297 | Acylphosphine compounds and their use as photoinitiators Acylphosphine compounds of the formula I ##STR1## where X is oxygen, sulfur or an electron pair, R1 is R4 or OR4, R2 is --OM, where M is a monovalent cation, R3 is aryl which is substituted at le... | 01/12/1988 |
| 4568432 | Process for preparing glyphosate and glyphosate derivatives A process for preparing glyphosate and derivatives of related structure. A precursor primary or secondary amine, such as glycine, is condensed with a carbonyl compound, such as formylphosphonic acid or its acetals, and the condensation product is reduced ... | 02/04/1986 |
| 4536596 | Extraction of amino acids from aqueous solution with dithiophosphinates A method for the extraction of certain amino acids from aqueous solutions by contacting said solutions with various dithiophosphinates in conjunction with a polar diluent is disclosed.... | 08/20/1985 |
| 4308214 | Preparation of dialkyldithiophosphinates Dialkylphosphine is added to a mixture of sulfur and water at 50°-90° C. After approximately 25% of the dialkylphosphine is charged, an alkali, such a sodium hydroxide, is added to neutralize the dialkyldithiophosphinic acid that forms. At this elevated... | 12/29/1981 |
| 4168963 | Herbicidal agents Herbicidal agents, containing as active ingredient a compound of the formula ##STR1## or their salts with acids, are useful for combatting a great variety of mono- and dicotyledonous weeds. In the formula R1 is methyl or halomethyl, R... | 09/25/1979 |
| 4100187 | Olefin-thionophosphine sulfide reaction products, their derivatives and use thereof as oil and fuel additives Adducts are formed in a process which involves the reaction of an olefin, including olefin polymers, with a dimeric thionophosphine sulfide. Further derivatives may be formed by reacting the resulting olefin-thionophosphine sulfide adduct products with am... | 07/11/1978 |
| 4077860 | Photopolymerizable composition stabilized with ammonium salts of phosphorus acid and process A stabilized photopolymerizable composition comprising photopolymerizable ethylenically unsaturated monomeric compounds, a photoinitiator and at least one organic ammonium salt of phosphorus acid as a stabilizer.... | 03/07/1978 |
| 4052484 | Substituted cyclic phosphine oxides A cyclic phosphine oxide of the formula ##STR1## in which R1 is an alkyl or an aryl radical having up to 14 carbon atoms, R2, r3 and R4 each independently is a C1 -C4 -alkyl radical, h... | 10/04/1977 |
| 3954847 | New benzene phosphonous acid compounds, their production and use as stabilizers for organic materials The purpose of the invention are new benzene phosphonous acid compounds in which two to four benzene nuclei are bound together and which contain one to three phosphorus atoms. The new compounds are free acids, their salts with inorganic cations, their est... | 05/04/1976 |
| 3933907 | Thiophosphorus acid amides Amides of phosphorus-containing thioacids are reacted with sulphenyl halides to give phosphorus-containing thioacid amides in which one or more of the nitrogen atoms carries a substituent attached through a sulphur atom. These substituted amides are inhib... | 01/20/1976 |
