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Patent No. 5307162

Cloaking System Using Optoelectronically Controlled Camouflage

A Cloaking System designed to operate in the visible light spectrum, utilizes optoelectronics and/or photonic components to conceal an object within it.

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Class 525/367 - Elemental metal or inorganic metal compound


Subclass of Class 525 - Synthetic resins or natural rubbers -- part of the class 520 series
Definition: Subject matter containing an elemental metal or an inorganic
No. of patents: 165
Last issue date: 03/25/2008


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NumberTitleIssue Date
7347938Use of hydrophobically modified copolymers based on N-vinyl monomers for the production of membranes
The present invention relates to the use of copolymers A containing a) from 50 to 99% by weight of at least one N-vinyllactam or N-vinylamine selected from the group consisting of N-vinylpyrrolidone, N-vinylpiperidone, N-vinylcapro...
03/25/2008
7312281Anhydrous, liquid phase process for preparing hydroxyl containing polymers of enhanced purity
An anhydrous, liquid phase process for preparing hydroxyl containing polymers of enhanced purity comprising the steps of polymerization, purification, transesterification, purification, catalyst removal, and solvent exchange. The resultant polymer in solution can be...
12/25/2007
7179865Purification with reducing agents of vinyl polymers obtained by atom transfer radical polymerization
This invention provides a method for purification of a vinyl polymer which comprises the atom transfer radical polymerization of a vinyl monomer using a transition metal complex as the polymerization catalyst, said...
02/20/2007
7151141Stabilized fluorine-containing polymer and method for stabilizing fluorine-containing polymer
To a fluorine-containing polymer, 0.1 to 10% of a compound having an alkali metal or an alkaline earth metal in terms of the number of atoms of the alkali metal or the alkaline earth metal based on the total number of the above terminal groups, 0.1 to 10% of ammonia...
12/19/2006
7138461Fluorine-containing copolymer molding material
A molding material consisting of a fluorine-containing copolymer, which has a metal elution index η of at most 10 as the total amount in ng of metals of Na, Mg, Cu, Cr, Ni, K, Ca and Fe per 1 g of the molding material, as obtained by elution analysis of the molding...
11/21/2006
7087681Method for preparing polymers containing cyclopentanone structures
A method to electrolytically polymerize aromatic hydrocarbons and oxidize cyclopentane structures within the hydrocarbons into cyclopentanone structures is disclosed including a method to electrolyze fluorene in the presence of an ester to produce poly(9-fluorenone)...
08/08/2006
7053125Controlled dispersion of colloidal suspension by comb polymers
Comb polymers are used as dispersants to increase the stability of colloidal suspensions containing multivalent or high concentrations of monovalent ions. Stabilized colloidal suspensions and methods of forming stabilized colloidal suspensions are described, includi...
05/30/2006
6914099Water absorbent resin particles of crosslinked carboxyl-containing polymers with low monomer content
Superabsorbent polymers having reduced levels of residual monomer are produced using a peroxodisulfate salt. ...
07/05/2005
6903163High melt swell polymer
The present invention relates to high melt swell partially neutralized alpha olefin acid copolymers. It also relates to a process for making such high melt swell polymers as well as for covalently crosslinking other polar copolymers including non-neutralized acid co...
06/07/2005
6864324Anhydrous, liquid phase process for preparing hydroxyl containing polymers of enhanced purity
An anhydrous, liquid phase process for preparing hydroxyl containing polymers of enhanced purity comprising the steps of polymerization, purification, transesterification, purification, catalyst removal, and solvent exchange. The resultant polymer in solution can be...
03/08/2005
6777501Stabilized fluorine-containing polymer and method for stabilizing fluorine containing polymer
To a fluorine-containing polymer, 0.1 to 10% of a compound comprising an alkali metal or an alkaline earth metal in terms of the number of atoms of the alkali metal or the alkaline earth metal based on the total number of the above terminal groups, 0.1 to 10% of amm...
08/17/2004
6736856Crosslinked acrylic moisture absorbing fibers and production methods thereof
The invention provides a production method capable of reducing the amount of the chemical liquid (hydrazine and sodium carbonate, etc.) for applying a crosslinking treatment and a hydrolytic treatment, capable of shortening the treatment time, and capable of obtaini...
05/18/2004
6730764Concrete hardening retarder
A concrete retarder comprises a polymer (A) having the concrete set retarding ability. The polymer (A) has, as a structural unit, a low glass transition temperature (Tg) component with a Tg of not higher than −5° C., and a surface tension of 45 mN/m or lower. The...
05/04/2004
6686420Pneumatic tire having a component containing high trans styrene-isoprene-butadiene rubber
The invention is directed to a pneumatic tire having at least one component comprising a vulcanizable rubber composition, wherein the vulcanizable rubber composition comprises, based on 100 parts by weight of elastomer (phr), from about 30 to 100 phr of h...
02/03/2004
6683143Ion-sensitive, water-dispersible polymers, a method of making same and items using same
The present invention is directed to ion-sensitive, water-dispersible polymers. The present invention is also directed to a method of making ion-sensitive, water-dispersible polymers and their applicability as binder compositions. The present invention is...
01/27/2004
6680082Mixed-metal-neutralized-copolymer-resins for metal coating powder applications
The present invention relates to neutralized copolymer resins having at least two different metals with one of the metals being zinc. These mixed metal resins are transformed into particulate or powder form for application to metal objects. The powder com...
01/20/2004
6670426Olefinic thermoplastic elastomer, process for production thereof, olefinic thermoplastic elastomer compositions, process for producing the same, and moldings thereof
An olefin thermoplastic elastomer containing an olefin random copolymer formed by copolymerizing ethylene, an ଱-olefin having 3 to 10 carbon atoms and an unsaturated monomer having a functional group, and optionally a non-conjugated diene, and metal...
12/30/2003
6670424Ross-linked sulphonated polymers and their preparation process
The present invention is concerned with cross-linked sulfonated polymers, eventually perfluorinated, and their preparation process. When molded in the form of membranes, the polymers are useful in electrochemical cells, in a chlorine-sodium electrolysis p...
12/30/2003
6667377Polyvinylidene fluoride ionomers containing pendant fluoroalkylsulfonyl imide or fluoroalkylsulfonyl methide groups
This invention concerns ionomers comprising monomer units of vinylidene fluoride and monomer units of perfluorovinyl ethers having pendant groups containing fluoroalkyl sulfonyl methide or fluoroalkyl sulfonyl imide derivatives and univalent metal salts t...
12/23/2003
6649703Cross-linked sulphonated polymers and their preparation process
The present invention is concerned with cross-linked sulfonated polymers, eventually perfluorinated, and their preparation process. When molded in the form of membranes, the polymers are useful in electrochemical cells, in a chlorine-sodium electrolysis p...
11/18/2003
6583248Polymerizable cyclodextrin derivatives
The polymerizable cyclodextrin derivatives ("PCDs") of this invention relate to cyclodextrin derivatives wherein substantially each molecule of which contains one or more covalently attached polymerizable group or groups, may also contain one or more othe...
06/24/2003
6559227Process for producing vinylamine-vinyl alcohol copolymer and use of the copolymer
Disclosed is a process for producing a powdered water-soluble polymer comprising hydrolyzing a copolymer comprising an N-vinylamide unit and a vinyl acetate unit while dispersed in water under a basic condition and then washing the resulting powdered wate...
05/06/2003
6429265Moisture-absorbing and desorbing polymer and compositions derived therefrom
Disclosed herein is a moisture-absorbing and desorbing polymer, characterized in that, the said polymer is an organic high-molecular substance containing 1.0-8.0 meq/g of carboxyl group of a potassium type and having a cross-linking structure....
08/06/2002
6410666ABA triblock and diblock copolymers and methods of preparing the same
The invention discloses a method for preparing a tri block copolymer of the formula: ##STR1## comprising: (a) contacting a cycloalkene with a chain transfer agent of the formula: Z--Y.dbd.Y--Z in the presence of a metal carbene metathesis catalyst to form a ...
06/25/2002
6281255Methods for regeneration of weakly basic anion exchange resins with a combination of an alkali metal carbonate and an alkali metal bicarbonate
Regeneration of weakly basic anion exchange resins with a combination of an alkali metal carbonate and an alkali metal bicarbonate is disclosed. Preferably, the alkali metal is sodium. The combination can be naturally available sodium sesquicarbonate....
08/28/2001
6191234Conjugated diolefin-based copolymer rubber and composition thereof
Conjugated diolefin-based copolymer rubber of a conjugated diolefin and an aromatic vinyl compound, wherein (1) the content of amino groups bound to the rubber (nitrogen content value) is 0.0025 to 0.20 mmol/g of copolymer rubber, (2) the content of the polyme...
02/20/2001
6133381Brominated polystyrenic flame retardants
This invention relates to a thermally stable brominated polystyrene composition which contains alkali metal base (e.g., NaOH) in an amount less than about 1 wt % such that if the flame retardant is dissolved in bromochloromethane and the resultant solutio...
10/17/2000
6100343Process for producing paintable polymeric articles
A method for improving surface adhesion characteristics of a polymeric substrate and/or virgin polymeric material in which the portion of the surface of the polymeric substrate and/or virgin polymeric material to be treated is contacted with a composition...
08/08/2000
6077913Process for producing paintable polymeric articles
A method for improving surface adhesion characteristics of a polymer substrate in which the portion of the surface of the polymeric substrate to be treated is contacted with a fluid material containing at least one oxidizing agent. The oxidizing agent in ...
06/20/2000
6077910Cement retarder and cement retardative sheet
A polymer comprising an anionic group (e.g. an acid anhydride group, a carboxyl group) and a hydro-philic segment (e.g. a polyoxyalkylene ether unit) is used as a cement retarder. The polymer is obtainable by copolymerization of a monomer including maleic...
06/20/2000
5990238Release coating for adhesive articles and method
A polymer includes an ethylene-containing backbone having substituents attached thereto, wherein the substituents include a urethane linked nitrogen-bonded hydrocarbon side chain having about 5 carbon atoms or more in length and a terminal methyl group; a...
11/23/1999
5945486Fluoropolymeric substrates with metallized surfaces and methods for producing the same
Fluoropolymeric substrates with metallized surfaces may be prepared by self-assembly of a chemisorbed layer of a metal ion-chelating organosilane onto a fluoropolymer surface after radio-frequency glow discharge plasma surface hydroxylation. The silane co...
08/31/1999
5891956Water-soluble polymers and compositions thereof
Water-soluble polymers including functionalization from the group of amino groups, carboxylic acid groups, phosphonic acid groups, phosphonic ester groups, acylpyrazolone groups, hydroxamic acid groups, aza crown ether groups, oxy crown ethers groups, gua...
04/06/1999
5866670Process for preparing polyacetal copolymer
A process for producing a polyacetal copolymer, which is extremely heat-stable and is extremely reduced in the quantity of unstable terminals even in a high polymerization yield in which trioxane as the principal monomer, comprises copolymerization of tri...
02/02/1999
5856410Polyacrylate superabsorbent post-polymerization neutralized with solid, non-hydroxyl neutralizing agent.
A new and improved method of manufacturing an acrylic acid superabsorbent polymer, that is manufactured by any known technique, except that the acrylic acid monomer is polymerized to substantial completion before neutralization, and neutralization is acco...
01/05/1999
5837779Process for producing ionomers employing ethylene terpolymers
A process for the production of an ionomers containing ethylenically-unsaturated structural units comprising contacting: (a) a terpolymer containing structural units produced from (i) at least one ଱-olefin having from 2 to 8 carbon atoms; (ii) at least o...
11/17/1998
5830933Denture adhesive composition
A denture adhesive composition contains a denture adhesive and a pharmacologically acceptable carrier in which the denture adhesive is a salt of a copolymer of maleic acid or anhydride and a 1 to 5 carbon atom alkyl vinyl ether having a specific viscosity...
11/03/1998
5753780Polymers having oxidic functionality and derivatives thereof
Disclosed are polymers comprising phenyl rings pendant from the polymer chains or incorporated therein, wherein the phenyl rings are substituted with aldehyde and/or carboxylic acid functionalities and/or derivatives thereof. Also disclosed is a catalytic...
05/19/1998
5696207Fluroropolymeric substrates with metallized surfaces and methods for producing the same
Fluoropolymeric substrates with metallized surfaces may be prepared by self-assembly of a chemisorbed layer of a metal ion-chelating organosilane onto a fluoropolymer surface after radio-frequency glow discharge plasma surface hydroxylation. The silane co...
12/09/1997
5665829Process for the polymerization of olefinic-containing monomers employing anionic initiators
Siloxy-terminated hydrocarbon polymers containing at least one polymer chain per molecule of the formula: ##STR1## wherein R1, R2 and R3 are independently selected from saturated and unsaturated aliphatic and aromatic...
09/09/1997
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