Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7462750 | Parylene variants and methods of synthesis and use Fluorinated paracyclophane compounds represented by the formula where least one of R1 and R2 comprises a fluorinated moiety is disclosed. These compounds can be utilized as precursor dimer compounds to produce polymeric coa... | 12/09/2008 |
| 7378449 | Poly(bromoaryl)alkane additives and methods for their preparation and use An additive mixture useful as a flame retardant is described. The mixture is comprised of (i) a poly(bromophenyl)alkane having in the molecule in the range of 13 to 60 carbon atoms and in the range of two to four aryl groups and (ii) a poly(bromophenyl)bromoalkane h... | 05/27/2008 |
| 7358407 | Bromination process This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most economically... | 04/15/2008 |
| 7129384 | Bromination process This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most economically... | 10/31/2006 |
| 6958423 | Bromination process This invention relates to a novel process which comprises feeding a mixture formed from diphenylethane and bromine to a stirrable reaction mass comprised of bromine and a bromination catalyst to yield a decabromodiphenylethane wet cake which can be most economically... | 10/25/2005 |
| 6875895 | Bis (diphenylvinyl) arene compound Provided is a bis(diphenylvinyl)arene compound having a reactive functional group on phenyl group, represented by below formula (1), wherein, Ar is an arylene group and has one or more substituents; R1-R | 04/05/2005 |
| 6858764 | Method for preparing bromofluorenes A method for preparing bromofluorenes includes a step of dispersing a compound selected from the group consisting of fluorene, fluorenone, and derivatives of fluorene and fluorenone in water to prepare a disperse system. Bromination is initiated by adding bromine Br... | 02/22/2005 |
| 6841707 | Method and apparatus for producing decabromodiphenyl alkanes A method of producing decabromodiphenyl alkanes includes the steps of charging a reaction vessel with bromine and a bromination catalyst and introducing a diphenyl alkane into the vessel at a location above the level of the charge bromine and catalyst. A dip tube ap... | 01/11/2005 |
| 6812311 | Highly stable packaging substrates A method of producing a highly stable packaging substrate in which are provided a first precursor having a first backbone and a first ethynyl group, and a second precursor having a second backbone and a second ethynyl group. Furthermore provided is a crosslinker hav... | 11/02/2004 |
| 6743825 | Poly(bromoaryl)alkane additives and methods for their preparation and use An additive mixture useful as a flame retardant is described. The mixture is comprised of (i) a poly(bromophenyl)alkane having in the molecule in the range of 13 to 60 carbon atoms and in the range of two to four aryl groups and (ii) a poly(bromophenyl)bromoalkane h... | 06/01/2004 |
| 6610219 | Functional materials for use in optical systems Functional optical materials for optical systems that are typically useful in optical waveguides, optical switching systems, optical modulators, optical computing systems and the like. Included are polymer systems and electrooptical chromophores. Polymers... | 08/26/2003 |
| 6579577 | Substituted benzene derivative, liquid crystal composition, and liquid crystal display element There is provided a liquid crystalline compound having a high voltage holding ratio which has a very small degree of temperature dependence, a low threshold voltage which has a very small degree of temperature dependence, a high Ɗn, and excellent miscibi... | 06/17/2003 |
| 6194620 | Dichloro tetraflouro-{2,2}-paracyclopane, a process for manufacturing thereof and poly-, -difluoro-chloro-para-xylylene film prepared therefrom Dichloro-tetrafluoro-[2,2]-paracyclophane (formula I), which is a novel compound useful as a material for forming a coating film by chemical vapor deposition, and a process for manufacturing thereof and poly--difluoro-chloro-para-xylylene fi... | 02/27/2001 |
| 6117371 | Continuous bromination process and products thereof A preferred process for producing a brominated, non-fused aromatic composition involves a continuous bromination in a continuous, mixed reactor such as a continuous stirred tank reactor. Bromine and the aromatic substrate, and optionally a bromination cat... | 09/12/2000 |
| 6057006 | Fluorocyclohexane derivatives, and liquid-crystalline medium The invention relates to fluorocyclohexane derivatives of the formula I ##STR1## in which R1, Z1, Z2, L1, L2, L3 and X are as defined as below: X is alkyl or alkoxy having 1 to 10 carbon at... | 05/02/2000 |
| 6008283 | Oligomeric flame retardant additive Flame retardants comprising oligomeric bromine-containing compounds comprising aryl groups that are connected by aliphatic chains are described. Flame retardant compositions comprising the flame retardants of the present invention and flame retardant aids... | 12/28/1999 |
| 5968963 | PLA2 inhibitors and their use for inhibition of intestinal cholesterol absorption Certain compounds have been synthesized and found to be effective inhibitors of phospholipase A2 (PLA2), and thereby useful in the treatment of intestinal cholesterol absorption and the disease states arising therefrom, such as hyper... | 10/19/1999 |
| 5846515 | Calixarene conjugate diagnostic agents for computerized tomography and method for using same Calixarene conjugates useful for imaging, particularly magnetic resonance imaging (MRI) and computed tomography (CT) are described. Said calixarene conjugates comprise (i) a calixarene backbone, and (ii) at least one imaging moiety linked thereto, and may... | 12/08/1998 |
| 5741949 | Continuous bromination process and products thereof A preferred process for producing a brominated, non-fused aromatic composition involves a continuous bromination in a continuous, mixed reactor such as a continuous stirred tank reactor. Bromine and the aromatic substrate, and optionally a bromination cat... | 04/21/1998 |
| 5679874 | Process for the preparation of dichloro-(2,2)-paracyclophane Process for the preparation of dichloro-(2,2)-paracyclophane from p-methylbenzylhalide through 2(3)-chloro-p-methylbenzyltrimethylammonium halide by Hofmann elimination of 2(3)-chloro-p-methylbenzyl trimethylammonium hydroxide in an aqueous solution of al... | 10/21/1997 |
| 5457235 | Halogenated diphenyldiacetylene liquid crystals The present invention provides liquid crystals that are diphenyldiacetylenes of the general formulas: ##STR1## where W, X, Y and Z are, independently of one another, a halogen atom, a hydrogen atom or a trihalomethyl group, T1 and T2 | 10/10/1995 |
| 5401890 | Process and apparatus for heat treating halogenated compounds This invention relates to an improved process and apparatus for preparing a product predominant in decabromodiphenylethane, the process comprising heat treating the product in a product treating and storage system for a period of time and at a temperature... | 03/28/1995 |
| 5324874 | Process for a decarbromodiphenylethane predominate product having enhanced whiteness This invention relates to an improvement in a process for preparing a product predominant in decabromodiphenylethane. In the improved process the diphenylethane is reacted with bromine in the presence of bromination catalyst in a reaction vessel by feedin... | 06/28/1994 |
| 5302768 | Process for decarbromodiphenylalkane predominant product This invention relates to a process for preparing a white or at least near white product which is predominant in decabromodiphenylalkane, and which contains a minor amount of dodecabromodiphenylalkane.... | 04/12/1994 |
| 5302767 | [2.2] paracyclophane and derivatives thereof Processes are disclosed for preparing [2.2] paracyclophane and derivatives thereof by conducting the Hofmann elimination of p-methylbenzyltrimethylammonium hydroxide, or derivatives thereof, in the presence of an effective amount of oxygen to inhibit the ... | 04/12/1994 |
| 5196607 | Process for preparing ketone enantiomer A novel multi-step process for preparing the (4S)-enantiomer of 4-(3,4-dichlorophenyl)-3,4-dihydro-1(2H)-naphthalenone in a highly-optically pure form is disclosed. The process involves (1) first reacting 3,4-dichlorocinnamyl chloride with L-(-)-ephedrine... | 03/23/1993 |
| 5185454 | Process for the preparation of symmetrical diarylacetylenes Symmetrical diaryl-acetylenes can be prepared by reacting an aryl halide with acetylene in the presence of a palladium catalyst and a base. If the acetylene is introduced into the liquid reaction mixture using a high intensity gas dispersion means, the ar... | 02/09/1993 |
| 5039729 | Novel mixtures of brominated diphenyl ethanes This invention relates to novel mixtures of brominated diphenyl ethanes, such mixtures containing a predominant amount of hexabromodiphenyl ethane and having an average bromine number, based upon GC area percent, of from about 6.7 to about 7.3. ABS based ... | 08/13/1991 |
| 4978798 | Method of making halobenzophenones and intermediates thereof Disclosed is a method of making a bisphenyl dihalomethane by reacting a trihalomethylbenzene with a halobenzene and a Lewis acid. The bisphenyl dihalomethane can than be reacted with water to form a halobenzophenone. In an optical third step ring chlorine... | 12/18/1990 |
| 4929784 | Process for the preparation of optionally substituted benzyl-benzenes Optionally substituted benzyl-benzenes can be prepared by reaction of a benzyl alcohol of the formula ##STR1## with a benzene of the formula ##STR2## in which R1, R2, R3, R4 and R5 independe... | 05/29/1990 |
| 4918215 | 4-halogenostilbene derivatives and processes for their preparation Novel compounds of the formula ##STR1## and processes for their preparation are described. X represents bromine or iodine and R1, R2 and R3 have the meaning indicated in the patent claim. The compounds (I) are valuabl... | 04/17/1990 |
| 4894109 | Method and apparatus for tacking together the copies of multicopy forms A method and apparatus for tacking together multipage forms having pin holes with the use of adhesive tacking tape.... | 01/16/1990 |
| 4880553 | Methylene linked aromatic pour point depressant Compositions useful as pour point depressants, novel compounds within such compositions, and processes for making same, as well as lubricant oil compositions containing same, are disclosed. The novel compounds are encompassed by the general structural for... | 11/14/1989 |
| 4876404 | Preparation of dichlorotrifluoromethyltoluenes including novel isomers Dichlorotrifluoromethyltoluenes useful in producing some medicines and agricultural chemicals are formed with good yields by reacting dichlorotrichloromethyltoluenes with hydrogen fluoride usually at 0°-100° C. under pressure of 3-20 kg/cm2. ... | 10/24/1989 |
| 4853488 | Process for the preparation of (2,2)-paracyclophane and derivatives thereof Process for the preparation of (2,2)-paracyclophane or derivatives thereof by the Hofmann elimination of p-methylbenzyl-trimethylammonium hydroxide or derivatives thereof, in an aqueous solution of an alkali metal hydroxide, wherein said elimination is ca... | 08/01/1989 |
| 4849559 | Process for the preparation of dichloro-[2,2]paracyclophane A process is provided for the preparation of the dimer, dichloro-[2,2]paracyclophane, which is useful as the starting material for the deposition of conformal parylene coatings employed, for example, in the electronics industry for the protection of vario... | 07/18/1989 |
| 4846998 | Cyclohexane derivatives Cyclohexane derivatives of the formula I in which R1 and R2 are each an alkyl group having 1-10 C atoms, in which one or two non-adjacent CH2 groups can also be replaced by O atoms and/or --CO-- groups and/or --CO--O-- groups a... | 07/11/1989 |
| 4816608 | Process for the preparation of (2,2)-paracyclophane and derivatives thereof Process for the preparation of (2,2)-paracyclophane or derivatives thereof by the Hofmann elimination of p-methylbenzyl-trimethylammonium hydroxide or derivatives thereof, in an aqueous solution of an alkali metal hydroxide, wherein said elimination is ca... | 03/28/1989 |
| 4816180 | Novel tolan type liquid crystal compound A novel tolan type liquid crystal compound having a large optical anisotropy value, a high N-I transistion temperature and also a low viscosity, and a liquid crystal composition containing the same are provided, which compound is a 4-(trans-4"-alkylc... | 03/28/1989 |
| 4814483 | Process for the preparation of optionally substituted 2-benzyl-toluenes Optionally substituted 2-benzyl-toluenes can be prepared by reaction of optionally substituted 2-benzyl-tert.-alkyl-toluenes with an optionally substituted aromatic hydrocarbon in the presence of anhydrous iron-(III) halide. The reaction is carried out at... | 03/21/1989 |
