Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8163950 | Processes for the production of tri-organo-monoalkoxysilanes and process for the production of tri-organo-monochlorosilanes A silane containing a bulky hydrocarbon group or groups R therein and having the formula (III) R3−(x+y)(R1)x(R2)ySi(OR3) can be produced by reacting a silane of the formula (I) | 04/24/2012 |
| 7358317 | Polycarbosilane and method of producing the same A polycarbosilane, having a main chain in which silicon atoms and carbon atoms are alternately repeated, includes a repeating unit shown by a following general formula (1), a repeating unit shown by a following general formula (2), and a repeating unit shown by a fo... | 04/15/2008 |
| 7285608 | Metallocene ligands, metallocene compounds and metallocene catalysts, their synthesis and their use for the polymerization of olefins A catalyst system includes a metallocene compound having the formula R9 L1 L2 M1 R1 R2 wherein R9 is a bridge between ligands L1 and L2 and M1 is a metal of... | 10/23/2007 |
| 7132294 | Functionalized small molecules for use in chemical sensors The invention provides a device for selective molecular recognition, the device comprising a sensing portion, wherein said sensing portion includes a substrate having coated thereon a layer comprising a non-volatile, small molecule compound having at least two penda... | 11/07/2006 |
| 7108922 | Siloxane-based resin and interlayer insulating film formed using the same A siloxane-based resin having a novel structure and a semiconductor interlayer insulating film using the same. The siloxane-based resins have a low dielectric constant in addition to excellent mechanical properties and are useful materials in an insulating film betw... | 09/19/2006 |
| 7078548 | Hyperbranched chemoselective silicon-based polymers for chemical sensor applications The invention provides a device for selective molecular recognition, the device comprising a sensing portion, wherein said sensing portion includes a substrate having coated thereon a layer comprising a hyperbranched compound having: | 07/18/2006 |
| 6784306 | Fluorinated organosilicon compounds Fluorinated organosilicon compounds having at least one fluorinated organic group and at least three SiH groups in a molecule are capable of hydrosilylation reaction with such compounds as vinyl group-bearing fluoro-polymers in a stable manner and fully compatible t... | 08/31/2004 |
| 6730802 | Silicon carbide precursor The compound 2,4,6-trimethyl-2,4,6-trisila heptane, the preparation thereof, and the use thereof as a silicon carbide precursor in chemical vapor deposition and infiltration procedures are disclosed. ... | 05/04/2004 |
| 6703519 | Poly (ethynylene phenylene ethynylene silylene)s and method for preparation thereof Heat stable poly(ethynylene phenylene ethynylene silylene) polymers with a determined molecular weight bearing at the chain end, groups derived from a chain limiter. Methods for preparing these polymers, hardened products obtained by heat treatment of the... | 03/09/2004 |
| 6696538 | Semiconductor interlayer dielectric material and a semiconductor device using the same The present invention relates to low a dielectric material essential for a next generation semiconductor with high density and high performance, and more particularly to a low dielectric material that is thermally stable and has good film-forming properti... | 02/24/2004 |
| 6570031 | Dendrimer compounds, method for the production thereof, use thereof as catalysts The present invention relates to a novel dendrimic compounds, to a method for the production thereof and to the use thereof as catalysts for the production of polymers, in particular to the use thereof as co-catalysts for metallocenes for polymerizing uns... | 05/27/2003 |
| 6555644 | Multi-reactive silicon compound having polyalkyleneglycol substituents and synthetic method thereof A multi-reactive silicon compound has at least one polyalkyleneglycol substituent with the number average molecular weight being 200 to 10,000 as synthesized by reacting an organohalosilane compound having H--Si bonds with a polyalkyleneglycol ether compo... | 04/29/2003 |
| 6552204 | Synthesis of 3,6-dialkyl-5,6-dihydro-4-hydroxy-pyran-2-one The present invention relates to a novel process for producing a δ-lactone of the formula: ##STR1## using an acyl halide of the formula: ##STR2## wherein R1, R2 R3 and X are described herein. In particular, the prese... | 04/22/2003 |
| 6534587 | Silalkylenesiloxane copolymer materials and methods for their preparation Symmetric and asymmetric cyclic silalkylenesiloxane monomers and copolymers thereof, as well as crosslinked and/or reinforced silalkylenesiloxane copolymers, medical devices containing such materials, and methods of preparation.... | 03/18/2003 |
| 6521774 | Organosilicon compounds A novel organosilicon compound obtained by introducing an alkylene group or analogue instead of the oxygen atom in an Si--O--Si linkage is capable of hydrosilylation reaction with another compound having a vinyl group to form a hydrosilylated derivative w... | 02/18/2003 |
| 6500976 | Organosilicon compounds Organosilicon compounds each having in a molecule (A) a perfluoroalkyl group of at least 3 carbon atoms which may be separated by an etheric oxygen atom, (B) a monovalent hydrocarbon group containing a carboxylic acid anhydride structure, and (C) a hydros... | 12/31/2002 |
| 6420504 | Branched siloxane/silalkylene copolymer, silicone-containing organic polymer, and process for producing the same Radical-polymerizable organic group-containing branched siloxane-silalkylene copolymer represented by the general formula: ##STR1## {in the formula, Y is a radical-polymerizable organic group, R1 is 1-10 carbon alkyl or aryl, and X1 ... | 07/16/2002 |
| 6331605 | Oligomeric organosilanepolysufanes, their use in rubber mixtures and for preparing molded articles Oligomeric organosilanepolysulfanes which are built up from the three structural units A and/or B and/or C, ##STR1## in which Y=H, CN, --(CH2)n SiRR1 R2 ; n=1-8, R, R1, R2 and R3, ind... | 12/18/2001 |
| 6278011 | Polysilahydrocarbons as lubricants for aerospace application Two new classes of polysilahydrocarbons: Rn --Si--[CH2 CH2 --Si--R13 ].sub.(4-n) (III) C6 H.sub.(12-m) [CH2 CH2 SiR13 ]m (IV) where R and R1 | 08/21/2001 |
| 6274692 | Cross-linkable compounds, optionally containing MQ silicon resins The invention relates to new, cross-linkable compounds containing (A1) linear organopolysiloxanes with aliphatically unsaturated hydrocarbon radicals, said organopolysiloxanes being of general formula (I) R1a R3-a | 08/14/2001 |
| 6271406 | Process for the preparation of halogenated 1,2-disilaethanes A process for the preparation of halogenated 1,2-disilaethanes of the general formula X3-n Rn Si--CHR1 CHR1 --SiRn X3-n (I) in which R may be identical or different and denotes a hydrogen atom or a ... | 08/07/2001 |
| 6258914 | Silane functional oligomer Alkoxy silane oligomers which have a non-hydrolyzable carbon bridged bond to another silane functionality are taught herein, as well as their manufacture and utility.... | 07/10/2001 |
| 6235864 | Non-strinking siloxane polymers Cross-linked polymers formed by ring-opening polymerization of a precursor monomer of the general formula R[CH2 CH(Si(CH3)2)2 O]2, where R is a phenyl group or an alkyl group having at least two carbo... | 05/22/2001 |
| 6215011 | Silane compositions Silane compositions are described which comprise (A) a silane coupling agent; and (B) a tris(silylorgano)amine or alkane characterized by the formulae [(RO)3 SiR1 ]3 N (I) or [(RO)3 SiR1 ]3 CR | 04/10/2001 |
| 6166234 | Tripodal cyclopentadiene derivatives and their use Novel tripodal cyclopentadiene derivatives have the formula (I) ##STR1## where E are identical or different and are --N(R)(R), --P(R)(R), --As(R)(R), --Sb(R)(R), --OR, --SR, --SeR, --TeR, where R are identical or different and are each hydrogen, a C | 12/26/2000 |
| 6127565 | Aromatic silane ether-containing coatings The following class of glycidyl and allyl ethers are found to cure at room temperature much faster than their glycidyl and allyl analogs: ##STR1## where: R1 is selected from the group consisting of: (a) an aliphatic hydrocarbon group containing... | 10/03/2000 |
| 6087521 | Silicon compounds containing silamethylene bonds and method for their preparation The present invention is organosilicon compounds described by formula (1) ##STR1## and formula (2) ##STR2## were R1 is selected from the group consisting of hydrogen, dichlorosilyl, trichlorosilyl, methyldichlorosilyl, dimethylchloros... | 07/11/2000 |
| 6080829 | Silalkylenesiloxane copolymer materials and methods for their preparation Symmetric and asymmetric cyclic silalkylenesiloxane monomers and copolymers thereof are disclosed, as well as crosslinked and/or reinforced silalkylenesiloxane copolymers, medical devices containing such materials, and methods of preparation.... | 06/27/2000 |
| 6013753 | Organosilicon endcapper having one aliphatic unsaturation An organosilicon compound comprising one aliphatic unsaturation described by formula ##STR1## where each R1 is an independently selected hydrocarbon radical free from aliphatic unsaturation comprising 1 to about 18 carbon atoms; each ... | 01/11/2000 |
| 6011167 | Polyorganosiloxazanes and process for the preparation thereof Polyorganosiloxazane is provided which is capable of being converted into a ceramic material having low dielectric constant. The polymer according to the present invention is characterized by comprising the main repeating units of --(RSiN3)--, ... | 01/04/2000 |
| 5998649 | Organosilicon compounds and method for preparation The invention is cyclic organosilicon compounds described by formula ##STR1## and by formula ##STR2## and linear organosilicon compounds by formula ##STR3## and by formula ##STR4## where R1 is selected from the group co... | 12/07/1999 |
| 5962713 | Carbosilane dendrimers comprising Si-O-metal bonds, a method of preparing them and their use The present invention relates to new carbosilane dendrimers comprising Si--O-metal bonds, to a method of preparing them and to their use.... | 10/05/1999 |
| 5955542 | Flame retardance additives for aromatic-based polymers and related polymer compositions Novel methods and compositions for improving the flame retardant capabilities of aromatic-based polymers like polycarbonate are disclosed. Other important polymer properties are substantially maintained, such as transparency. One aspect of the invention i... | 09/21/1999 |
| 5880305 | Process for preparation of SioH-functional carbosilane dendrimers The present invention relates to a process for the preparation of SiOH-functional carbosilane dendrimers.... | 03/09/1999 |
| 5811564 | Polycarbosilane hydroxides and methods for their preparation This invention pertains to polycarbosilane hydroxides which contain units of the formula ##STR1## where R is a hydrocarbon having from 1 to 20 carbon atoms and to methods for their manufacture. The polycarbosilane hydroxides may be prepared by t... | 09/22/1998 |
| 5808126 | Synthesis of functional silyl terminated branched polyalkenylenes and polyolefins A method for preparing an ,ω-silyl terminated branched polyalkenylenes and polyolefins is provided. The method involves: (I) reacting a mixture comprising (A) at least one branched acyclic diene, and (B) at least one alkenylsilane in the presence of an acid... | 09/15/1998 |
| 5726271 | Hydroxyphenyl-containing polyorganosiloxanes The present invention relates to a hydroxyphenyl-functional polyorganosiloxane compound having the formula ##STR1## wherein R is independently a monovalent hydrocarbon group free of aliphatic unsaturation, A is a substituted or unsubstituted hydroxyp... | 03/10/1998 |
| 5677410 | Carbosilane-dendrimers, carbosilane-hybrid materials, methods for manufacturing them and a method for manufacturing coatings from the carbosilane-dendrimers The present invention relates to novel functional carbosilane-dendrimers, organic-inorganic carbosilane-hybrid materials, methods for manufacturing them, methods for manufacturing coatings from the functional carbosilane-dendrimers and the use thereof.... | 10/14/1997 |
| 5616754 | Compounds useful as chemical precursors in chemical vapor deposition of silicon-based ceramic materials In order to reduce the rate of coke formation during the industrial pyrolysis of hydrocarbons, the interior surface of a reactor is coated with a thin layer of a ceramic material, the layer being deposited by thermal decomposition of a non-oxygen containi... | 04/01/1997 |
| 5605998 | Method for producing polycarbosilanes There is disclosed a method for producing polycarbosilanes, comprising polymerizing silane of the formula SiH4 with dienes in the presence of a rare earth metal complex. Polycarbosilanes useful as photoreactive materials and as raw material of ... | 02/25/1997 |
