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Patent No. 6049912

Mountable Printable Placard With Headband

A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.

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Class 549/231 - Cyclic anhydrides (i.e., -C(=X)OC(=X)-, wherein the X's are the same or diverse chalcogens, is part of the hetero ring)


Subclass of Class 549 - Organic compounds -- part of the class 532-570 series
Definition: Compounds wherein the hetero ring is a cyclic anhydride;
No. of patents: 67
Last issue date: 07/01/2008


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NumberTitleIssue Date
7393961Polyhalogenated ethers
(Per)haloethers having formula: X-(Rf)L-O—CF2CF2—O—CX1X2—CFX3X4 ,   (I) process for obtaining them and hypofluorites usable in the synthesis of said (per)hal...
07/01/2008
7309756Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters
Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic acid or a dicarboxylate in the presence of a catalyst to produce a comp...
12/18/2007
7151143Blends containing macrocyclic polyester oligomer and high molecular weight polymer
The invention provides blends of macrocyclic polyester oligomer (MPO) with high-molecular-weight polymer and polymerization catalyst as friable, one-component, ready-to-polymerize materials with long shelf life. The invention also provides methods for preparation an...
12/19/2006
7119091Triazaspiro[5.5]undecane derivatives and pharmaceutical compositions comprising thereof, as an active ingredient
Triazaspiro[5.5]undecane derivatives, quaternary ammonium salts thereof, N-oxides thereof, non-toxic salts thereof, or pharmaceutical compositions comprising them, as an active ingredient. So the compounds of the f...
10/10/2006
7071291Isolation, formulation and shaping of macrocyclic oligoesters
Processes for isolating, formulating, and shaping macrocyclic oligesters were developed which allow efficient production of macrocyclic oligoesters substantially free from solvent, which may include additives, fillers, and catalysts. ...
07/04/2006
7022806Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters
Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic acid or a dicarboxylate in the presence of a catalyst to produce a comp...
04/04/2006
6994914Macrocyclic polyester oligomers and processes for polymerizing the same
A water slurry process is used to prepare a prepreg and to manufacture articles from macrocyclic polyester oligomers. In one embodiment, a process for preparing a water suspension of macrocyclic polyester oligomers includes the steps of contacting a macrocyclic poly...
02/07/2006
6962968Purification of macrocyclic oligoesters
Acid impurities, such as carboxylic acid-terminated polymers, are removed from macrocyclic oligoesters with ion exchange resins, resulting in macrocyclic oligoesters that are substantially free of acid impurities. The ion exchange resins can be regenerated anew and ...
11/08/2005
6960626Intimate physical mixtures containing macrocyclic polyester oligomer and filler
The invention provides intimate physical mixtures of macrocyclic polyester oligomer (MPO) and filler, as well as methods for their preparation and use. Improved dispersion of filler in a polymer matrix is achieved upon polymerization, and larger amounts of filler wi...
11/01/2005
6906147Catalytic systems
This invention relates to single-component and multi-component catalytic systems using aryl titanates. Aryl titanate compounds are useful as catalysts and co-catalysts in single-component and multi-component catalytic systems (e.g., for the polymerization of macrocy...
06/14/2005
6590071Reversible aqueous pH sensitive lipidizing reagents, compositions and methods of use
The present invention provides lipidized conjugates comprising an amino group-containing biologically active substance and a lipophilic group capable of penetrating a biological membrane. Under neutral or mildly acidic conditions, including those found in...
07/08/2003
6528627Bridged aromatic substituted amine ligands with donor atoms
The present invention provides for substituted metal chelating compounds in which at least two of the chelating atoms are nitrogen which are directly attached to aromatic rings and one or more of those nitrogen atoms has attached thereto a substituent oth...
03/04/2003
6310218Melt crystallization purification of lactides
Melt crystallization purification of lactide; and separation and purification of lactides existing in more than one isomeric form....
10/30/2001
6018057Process for producing acid anhydrides
A process for producing anhydrides by passing a solution of the acid, preferably an organic polyacid, which is to undergo anhydridation over an acidified clay and a process for producing the catalysts therefor....
01/25/2000
5750679Process for obtaining pharmacologically active compounds from complex mixtures of substances
A process for obtaining pharmacologically active compounds from complex mixtures of substances Free organic acids, hydroxy acids, fatty alcohols, sugars and hydroxy-substituted steroids are obtained from complex mixtures of substances by mixing the materi...
05/12/1998
5719181Use of acyl-substituted aminopyrans
The invention relates to the use of acyl-substituted aminopyrans for the production of medicaments, in particular of medicaments for the treatment of disorders of the central nervous system....
02/17/1998
5670660Process for collecting airborne anhydrides
An apparatus and process for the recovery of airborne anhydrides such as anhydride vapor or dust wherein these airborne anhydrides are contacted with hot glycol, such as diethylene glycol, in the liquid phase to first dissolve and then react with the airb...
09/23/1997
5646215Polybutylene containing reactive unsaturated functionality
The invention relates to a functionalized polybutylene polymer which contains at least one unsaturated group in its molecule, said functionalized polybutylene being prepared by reacting (A) an anhydride-functional polybutylene with (B) an allyl-functional...
07/08/1997
5405935Non-volatile solvent replacement
A non-volatile compound useful as a solvent and a method of manufacturing the compound. The compound is formed from heating a combination of a lactide and a drying oil which has conjugated double bonds. The compound is particularly useful as a resin solve...
04/11/1995
5286879Process for the preparation of mono-condensation derivatives of adipic acid
An improved process for preparing mono-condensation derivatives of adipic acid with fewer steps and better purity is disclosed. In particular, this process comprises: (a) forming relatively concentrated and pure cyclic monomeric adipic anhydride by depoly...
02/15/1994
5278319Process for the production of hydrocarbon partial oxidation products
An improved process is provided for the production of a partial oxidation product by the vapor phase reaction of a hydrocarbon with substantially pure oxygen in the presence of a suitable catalyst. In the improved process, the partial oxidation product is...
01/11/1994
5262548Phosphorous/vanadium oxidation catalyst
An improvement in the oxidation catalyst used for the partial oxidation of n-butane and containing vanadium and phosphorus, zinc and lithium mixed oxides which comprises adding a molybdenum compound modifier in an amount of from about 0.005 to 0.025/1 Mo/...
11/16/1993
5260456Process for producing itaconic anhydride
A process for producing anhydrides by passing a solution of the acid, preferably an organic polyacid, which is to undergo anhydridation over an acidified clay and a process for producing the catalysts therefor....
11/09/1993
5210222Process for the production of malonic acid anhydride
A process, which is harmless with respect to safety, for the production of malonic acid anhydride. For this purpose, diketene is ozonized in the presence of a suitable carbonyl compound. Malonic acid anhydride is a highly reactive intermediate product for...
05/11/1993
5210280Process for the preparation of alkanedioic acid derivatives
A process for the preparation of alkanedioic acid derivatives comprising reacting an alkenoic acid derivative with carbon monoxide and a nucleophilic compound having a mobile hydrogen atom in the presence of a catalyst system comprising a source of a Grou...
05/11/1993
5126463Process for the production of anhydrides
This invention provides a process for the production of an anhydride by the vapor phase reaction of a hydrocarbon with substantially pure oxygen in the presence of a suitable catalyst. In the improved process, the anhydride product is removed, carbon mono...
06/30/1992
50618099,9-bis-(3,4-dicarboxyphenyl)fluorene dianhydrides
The present invention relates to compositions of matter corresponding to the formula: ##STR1## wherein R1 through R4, inclusive, are independently selected from a hydrogen atom, a linear or branched alkyl or alkoxy group having ...
10/29/1991
5023346Process for the production of cyclic carbonic acid esters
Cyclic carbonic acid esters are produced by reaction of hydroxy compounds with phosgene in the presence of a heterocyclic compound containing at least one nitrogen atom as ring member in an aromatic ring....
06/11/1991
4870127Poly (alkylene carbonate) polyahls having on the average up to one acid-terminal moiety and salts thereof
Novel acid-functional poly(alkylene carbonate) polyahls and their salts having surfactant activities are disclosed. These polyahls have, on the average, at least about 0.05 and up to about and including one hydrophilic terminus per molecule and can be pro...
09/26/1989
4841073Radical anion salts of derivatives of 1,4,5,8-naphthalenetetracarboxylic acid and their use
The invention relates to crystalline, stable radical anion salts of derivatives of 1,4,5,8-naphthalenetetracarboxylic acid of the formula ##STR1## in which p1 k, n, s, x, m, p, B, R and c have the meaning given in the description, to processes for th...
06/20/1989
47256202H-pyran-2,6-(3H)-dione derivatives with anti-allergic activity
Achiral compounds of a 2H-pyran-2,6(3H)-dione derivative of the formula ##STR1## or a pharmaceutically acceptable salt thereof, where R is --(CH2)m OH or --CH((CH2)n CH2 OH)2 where m i...
02/16/1988
4617405Preparation of alpha, beta-unsaturated carbonyl compounds
Alpha, beta carbonyl compounds are prepared from an acid anhydride selected from the group consisting of glutaric anhydride and 3-alkyl glutaric anhydride, and a beta-hydroxy carbonyl compound having the following chemical formula: The process comprises: ...
10/14/1986
45543593-Substituted pentanedioic acids and derivatives thereof
This invention relates to methods of preventing or reducing the degradation of elastin and other proteins and thereby preventing or retarding the disease states caused by said degradation by administering compounds of the formula: ##STR1## or th...
11/19/1985
4547582Method of producing herbicide intermediates
A method of producing alkyl 3-hydroxy-4-(4-hydroxyphenoxy)pentanoate which comprises the steps of: (a) reacting 4-benzyloxyphenol with an alkali hydroxide and 2-chloropropionic acid in the presence of a suitable solvent and at a temperature sufficient to ...
10/15/1985
4496746Synthesis of alkenyl saturated aliphatic polycarboxylic acid anhydrides
Reaction of maleic acid anhydride with olefin oligomers is facilitated by reacting the maleic acid anhydride in the form of a dispersion or emulsion in a carrier fluid. This minimizes by-product sludge formation....
01/29/1985
4476311Analgesic 4-carboxy-pyrrolidin-2-one compound
Analgesic and anti-inflammatory compounds are provided. These compounds possess the following general formula: ##STR1## wherein R=--COOR5, --CH2 CO2 H, ##STR2## wherein A and B=hydrogen, lower alkyl, hydroxy alky...
10/09/1984
4442303Recovery of water miscible organic acids from aqueous solution as alkyl esters
In one of its embodiments this invention provides a process for recovering C4 -C6 dicarboxylic acid components contained in a waste byproduct stream derived from a reaction system in which adipic acid is produced by nitric acid oxida...
04/10/1984
44340711,3-Dibromo dialkylhydantoin and olefin oligomer reaction product as a catalyst for preparing alkenyl dicarboxylic acid anhydride
Reaction of maleic acid anhydride and polyisobutylene is improved by use, as catalyst, of a complex of polyisobutylene and a 1,3-dibromo dialkylhydantoin....
02/28/1984
4433157Process for manufacturing anhydrides of alkenyl dicarboxylic acids
A process for manufacturing an alkenyl dicarboxylic acid, anhydride comprises reacting at least one halogenated polyolefin with at least one unsaturated dicarboxylic acid anhydride in substantially stoichiometrical proportion, in the presence of a minor p...
02/21/1984
4414397Production of alkenyl substituted aliphatic dicarboxylic anhydrides
Reaction of maleic acid anhydride and polyisobutylene to form product polyisobutenyl succinic acid anhydride is effected under controlled conditions whereby tar and sludge formation is minimized....
11/08/1983
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