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| Patent # | Description |
|---|---|
| US-4,264,786 |
A.C. Signal current transmission trunk circuit for telephone exchange
systems An A.C. signalling transmission trunk circuit has a single-polarity drive voltage source for controlling a pair of thyristor-switching circuits which are... |
| US-4,264,785 |
Voltage regulator circuitry for a telephone answering device In a telephone answering device, a bistable circuit employing a single operational amplifier is used for mode switching and a voltage regulator using another... |
| US-4,264,784 |
Stereophonic coder employing a multilevel switching system for the
generation of the stereophonic signal In order to obtain a stereophonic coder, the levels of the signals S.sub.1, S.sub.2 relative to the two channels of a stereophonic system are modified and... |
| US-4,264,783 |
Digital speech synthesizer having an analog delay line vocal tract A phoneme based speed synthesizer that utilizes an analog delay line (ADL) vocal tract which simulates the variations in the acoustical characteristics of the... |
| US-4,264,782 |
Method and apparatus for transaction and identity verification A method and apparatus whereby the senders and receivers of messages sent over a transmission system including a Host CPU may guarantee the integrity of the data... |
| US-4,264,781 |
Apparatus for encoding and decoding data signals An encoder/decoder is provided having two random bit generators which are cross-coupled in the Encoding mode with the data signal being directed to the input of... |
| US-4,264,780 |
Heat-recoverable articles A heat-recoverable article comprises a heat-shrinkable sleeve having an elongate electrical conductor retained therein. The conductor projects from at least one... |
| US-4,264,779 |
Poke-through electrical fitting with releasable wedging point for
retention A poke-through electrical fitting device for placement in a passageway such as a cylindrical hole through a wall, floor, or the like, which may be made of... |
| US-4,264,778 |
Extraction furnace A furnace is disclosed for extracting metals of relatively high volatility from compounds containing oxides of metals. The furnace provides uniform heating for... |
| US-4,264,777 |
Herbicidal diphenyl ether compound Nitrodiphenyl ether derivatives of the general formula: ##STR1## wherein X represents chlorine, fluorine, methyl or trifluoromethyl and n is an integer of... |
| US-4,264,776 |
Production of secondary amines Tertiary amines such as alkyl or benzyl amines are catalytically oxidized by oxygen over an activated carbon catalyst to selectively produce secondary amines. |
| US-4,264,775 |
Synthesis of .beta.-aminostyrenes A simple process for the preparation of .beta.-aminostyrenes proceeds from anilines by successively diazotizing, reacting with a vinyl ester, and reacting with a... |
| US-4,264,774 |
2-Thiophenesulfonyl bromides 2-Thiophenesulfonyl bromides having up to three additional substituents on the thiophene moiety selected from the group C.sub.1-4 alkyl, chloro and bromo. The... |
| US-4,264,773 |
Preparation of 2-chloro-thioxanthone The invention relates to 2-(4'-chloro-phenylthio)-benzonitrile, to its process of preparation and to its use for preparing 2-chlorothioxanthone. 2-Chloro-thioxanthone... |
| US-4,264,772 |
Combating fungi with 1-phenyl-1-oximino-2-(1,2,4-triazol-1-yl)-ethanes A 1-phenyl,1-oximino-2-(1,2,4-triazol-1-yl)-ethane of the formula ##STR1## in which R is halogen, alkyl, alkoxy, alkylthio, alkylsulphonyl, halogenoalkyl,... |
| US-4,264,771 |
Alkylation of substituted oxazolinone-(5) compounds Manufacture of 4-substituted oxazolinone-(5) compounds, which are intermediates for .alpha.-substituted aminoacids, by alkylation of 2-substituted or... |
| US-4,264,770 |
Process for preparing 1,4-bis-piperonylpiperazine and similar compounds Compounds of general formula: ##STR1## particularly 1,4-bis-piperonylpiperazine, are obtained with high yields by reacting equimolar quantities of... |
| US-4,264,769 |
Process for the preparation of hydroxyphenyl ethers A novel process for the preparation of a hydroxyphenyl ether compound of the formula ##STR1## in which R represents a radical of the formula ##STR2## ... |
| US-4,264,768 |
Di-quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic
acids This invention relates to novel di-quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids; the preparation thereof; and uses thereof. |
| US-4,264,767 |
.alpha.-1,4-Thiazine alkanephosphonic acids This invention relates to .alpha.-1,4-thiazine alkanephosphonic acids; and to the preparation and uses thereof. |
| US-4,264,766 |
Immunological diagnostic reagents A water-insoluble immunological reagent being formed from discrete particles of a latex carrier to which a water-soluble polyhydroxy compound is covalently bound... |
| US-4,264,765 |
Salts of erythromycin A esters Highly water-soluble erythromycin A derivatives wherein the desosamine moiety is quaternized with an acyloxy-, benzoyloxy- or alkoxycarbonyl-(or ... |
| US-4,264,764 |
Meningitis vaccine A high molecular weight capsular polysaccharide from H. influenza type b is an effective immunogenic agent against infection caused by the H. influenza type b... |
| US-4,264,763 |
Process for producing lactulose The invention concerns a process for producing lactulose from lactose, wherein a saturated aqueous solution of lactose monohydrate is heated under reflux in the... |
| US-4,264,762 |
Glass-clear nylons from 3,3'-dimethyl PACM A glass-clear nylon based on aromatic dicarboxylic acids and dialicyclic diamines is prepared by polycondensing isophthalic acid with a mixture of ... |
| US-4,264,761 |
Copolyester barrier coat An elastomeric copolyester having a multiplicity of recurring intralinear long chain and short chain ester units connected through ester linkages wherein: (A)... |
| US-4,264,760 |
Method of abating aldehyde odor in resins and products produced therefrom Conventional aldehyde containing resins for making bonded products or insulation foam are deodorized by the addition thereto of a sulfur compound such as oxyacid... |
| US-4,264,759 |
Polyphosphazene polymers containing alkoxy substitutents containing a
fully substituted carbon in the beta position Polyphosphazene polymers are prepared which contain repeating units represented by the formulas: ##STR1## wherein X is represented by: ##STR2## ... |
| US-4,264,758 |
Novel epoxy curing system A novel epoxy resin curing system comprises salicylic acid and methyliminobispropylamine (MIBPA). The resins comprise a vicinal polyepoxide and a curing amount... |
| US-4,264,757 |
Radiation-curable allyl- or vinyl capped polycaprolactone compositions Allyl- or vinyl-capped polycaprolactone polyol derivatives are produced by the reaction of a polycaprolactone polyol, an allyl or vinyl monomer and a ... |
| US-4,264,756 |
Substantially amorphous olefin copolymers and compatible tackifying
resins useful as hot-melt,... This invention relates to blends of compatible tackifiers with substantially amorphous olefin copolymers containing at least one C.sub.3 to C.sub.5 linear... |
| US-4,264,755 |
Hydroxy-functional vinyl copolymers The instant invention is directed to novel hydroxy-functional vinyl copolymers. The copolymers diclosed herein are produced by polymerizing styrene in the... |
| US-4,264,754 |
Oligomers and a method for the manufacture thereof An oligomer having, as the constitutional component thereof, (dihydrodicyclopentadienyl)-maleates or -fumarates of the general formula I: ##STR1## ... |
| US-4,264,753 |
Process for polymerizing conjugated dienes The catalyst system disclosed herein comprises a combination or a chelate of a hydrocarbyl lithium compound with a bicyclic amine compound bridged together... |
| US-4,264,752 |
Radiation-curable acrylated urethane polycarbonate compositions Acrylated urethane polycarbonate compositions are formed from the reaction of a polycarbonate polyol, a polyisocyanate and a hydroxy-containing acrylate monomer.... |
| US-4,264,751 |
Copolyester resin having minimal carboxyl terminated ends and method for
producing the same A copolyester resin having minimal carboxyl terminated ends, is disclosed, as well as the method for making it. The esterification-condensation reaction is... |
| US-4,264,750 |
Process for fluorinating polymers Fluorinated low energy polymer surfaces are provided by fluorinating a hydrocarbon polymer with ions or radicals of fluorinated species in a cold plasma. |
| US-4,264,749 |
Organo-lithium compounds and a process for their preparation Organo-lithium compounds of the formula: ##STR1## wherein R is an alkyl group of up to 5 carbon atoms, R' is either hydrogen or an alkyl group of up to 5... |
| US-4,264,748 |
Epoxy resin coating compositions Curable compositions containing (1) an epoxy resin containing a plurality of active hydrogens and (2) and addition polymer of an isocyanatoalkyl ester of an... |
| US-4,264,747 |
High impact strength styrene-acrylonitrile resin blend High impact strength gum plastics are prepared by blending a styrene acrylonitrile resin with a styrene-ethylene-butylene-styrene block copolymer which has... |
| US-4,264,746 |
Hydrolyzed ethylene-vinyl acetate resin containing diene-nitrile resin
as impact modifier Permanently miscible resin blends containing hydrolyzed ethylene-vinyl acetate resin and demonstrating improved impact-resistance compared to the unblending... |
| US-4,264,745 |
Fire-retardant polyurethane foam based on a bromine-containing polyester A polyol is produced as the reaction product of dibromonepentyl glycol and tetrabromophthalic anhydride with defined alkyoxides. This polyol can be used to... |
| US-4,264,744 |
Use of low molecular weight polyhydroxy compounds in methylene chloride
blown polyurethane foams The use of methylene chloride as a blowing agent for resinous foams, particularly urethane foams is improved by incorporating a low molecular weight polyhydroxy... |
| US-4,264,743 |
Polyurethane foam sealing material and process for producing the same A flexible or semi-rigid open-cell, polyurethane foam sealing material prepared from a polyisocyanate and a polyol component, a major portion of said polyol... |
| US-4,264,742 |
Opacifying agents and process for production Opacifying agents of improved structural integrity and light scattering ability are disclosed. These agents are composed of hollow, substantially spherical... |
| US-4,264,741 |
Tiltable fermentor A tiltable fermentor includes a hollow perforated drum rotating within a generally cylindrical jacketed pressure vessel. The drum is cantilever-mounted and... |
| US-4,264,740 |
Apparatus for treating residual water This disclosure relates to an installation for treating residual water, particularly residual water resulting from the manufacture of sauerkraut, in order to... |
| US-4,264,739 |
Sparger for cell culture system A sparger for mass cell culture systems is formed from an elongated tube having a plurality of ports. |
| US-4,264,738 |
Process for purification of proteolytic enzymes A process for purification of proteolytic enzymes which comprises a biospecific sorption on a sorbent comprising a product of interaction of a solid carrier... |
| US-4,264,737 |
Method of making genetically stable mutants of vibrio cholerae Incubation of a parent strain of Vibrio cholerae at elevated temperature to produce a hypotoxinogenic variant strain and mutation of the variant strain results... |
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