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...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.

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Class 523/353 - Utilizing plural discrete mixing operations in specifically described distinct noninterconnected zones


Subclass of Class 523 - Synthetic resins or natural rubbers -- part of the class 520 series
Definition: Process wherein the intentional or desired composition is
No. of patents: 25
Last issue date: 10/21/2008


NumberTitleIssue Date
7439284Method of making poly(arylene ether) compositions
A method of making a thermoplastic composition comprises melt mixing a concentrate comprising a first thermoplastic, a second thermoplastic and an additive with a component selected from the group consisting of a third thermoplastic, fire retardant additive, reinfor...
10/21/2008
7345110Process for the continuous production of an aqueous polyurethane dispersion
A process for the continuous production of an aqueous polyurethane dispersion based on at least one aliphatic and/or aromatic polyisocyanate is described, which is characterised by the following steps: a) production of an aqueous p...
03/18/2008
6756427Process for producing thermoplastic resin composition
Provided is a process for producing a thermoplastic resin composition of low specific gravity containing hollow spheres by a melt processing extrusion method, wherein a melt-kneading extruder equipped with a screw is used and the extruder has an upper stream side su...
06/29/2004
6740276Process for preparing pigmented shaped articles comprising poly (trimethylene terephthalate)
A process of making a pigmented shaped article comprising: (a) providing polytrimethylene terephthalate chips and two or more colored pigmented chips each containing at least one different color pigment; (b) heating the polytrimethylene terephthalate chips and color...
05/25/2004
6734231Easily distributable pigment compositions
The present invention relates to easily distributable pigment compositions consisting essentially of pigment and urea-aldehyde resin, wherein the weight ratio of pigment to urea-aldehyde resin is generally in the range of 40:60 to 90:10, a process for their producti...
05/11/2004
6590040Process for the continuous production of superabsorbent polymers from PAN emulsions
A process for producing a superabsorbent polymer is described. The process that entails a continuous hydrolysis of an aqueous emulsion of crosslinked or uncrosslinked polyacrylonitrile in the form of fine particles is carried out in a cascade of stirred t...
07/08/2003
6001917Method for preparing heat-curable silicone rubber compounds
In a first step, basic components including (A) 100 parts by weight of an organopolysiloxane gum, (B) 5-100 parts by weight of a reinforcing silica filler, and (C) 0.1-30 parts by weight of a processing aid are fed batchwise to a closed mixer for mixing t...
12/14/1999
5994492Microgels
A microgel is produced by a two-stage process wherein the monomers are first polymerized in the absence of solvent for a controlled period, and in a second stage solvent is added and polymerization is completed. The polymer is preferably a polyurethane fo...
11/30/1999
5891936Production of a polymer composition
A process of making a polyhydroxyalkanoate PHA latex comprises making a liquid-form solution of such PHA in a water soluble liquid and contacting that solution with water under shear. Suitably the solution is prepared at a temperature between the boiling ...
04/06/1999
5847052Process for producing thermoplastic elastomer composition
A process for producing a thermoplastic elastomer composition which comprises dynamically cross-linking an olefine copolymer rubber and an olefine plastic using a twin-screw extruder, said process being characterized in that said twin-screw extruder compr...
12/08/1998
5633296Method for the production of rubber mixtures
The method for manufacturing rubber mixtures includes the steps of plasticizing batchwise rubber in a first inner kneader to produce a batch of plasticized rubber and transporting the batch of plasticized rubber, while still hot, into a second inner knead...
05/27/1997
5530039Process for manufacturing stopping compounds and use of the stopping compounds produced
Process for manufacturing stopping compounds, in particular such as can be used for motor vehicle repair lacquering, in which in a first stage at least 90 wt.-% of the solvents required and 80 to 100 wt.-% of the binding agents required are dispersed toge...
06/25/1996
5369149Method for continuously preparing thermo-crosslinkable and/or thermoplastic elastomer blends
A method for preparing thermo-crosslinkable and/or thermoplastic elastomer blends by mixing the elastomer with plasticizer oil and other additives, said method comprising the steps of: (a) continuously premixing the crushed elastomer in an annular zone mixer ...
11/29/1994
5250586Method for the production of finely divided water soluble polymers
A composition including an oil and particles of a solid, water soluble flocculant polymer substantially immiscible with the oil provides ready dispersibility of the polymer in aqueous fluids. Desirably, the composition is substantially free of surfactants...
10/05/1993
5171768Process for the production of carboxylated latexes by the selective monomer addition and polymerization
The present invention relates to a free radical emulsion polymerization process. The latex is prepared by polymerizing (a) at least one conjugated diene, (b) at least one non-carboxylic vinyl aromatic or aliphatic comonomer selected from the group consist...
12/15/1992
5110846Process for continuous production of matt or satin powder paints
The method consists of the separate simultaneous extrusion, by means of two or more contiguous extruders or one extruder with two or more separate homogenization chambers, of two or more paints in powder form and the union of the extrusions in the molten ...
05/05/1992
5095058Stable polyamide resin dispersions and methods for the manufacture thereof
Aqueous dispersions of polyamide resins having improved stability with respect to gelation and phase separation are provided, along with preparative methods therefor. The improved stability of the provided aqueous dispersions is achieved by the addition t...
03/10/1992
4737561Process for the continuous production of room temperature-vulcanizable silicone compositions
A process for producing room temperature-vulcanizable silicone compositions which comprises mixing, in a first step, crosslinkable diorgano(poly)siloxanes, filler(s) and either catalyst(s) or crosslinking agent(s) and a part or all of the optional additiv...
04/12/1988
4692479Self-setting urethane adhesive paste system
An adhesive paste composition containing in admixture a resin component, a hardener component, a hydrophobic filler component and a curing agent. The resin component includes a polyol having at least two hydroxyl groups and the hardener component includes...
09/08/1987
4647608Process for the production of polyolefin resins containing an amide and a zinc compound
A method for the production of polyolefin resins containing both an organic amide and a zinc compound. One composition is prepared which contains the polyolefin and the amide, but which does not contain the zinc compound. Another composition is prepared w...
03/03/1987
4467060Heterogeneous rubber having low air diffusion
A heterogeneous rubber composition having good air impermeability is made by mixing together separate fractions of rubbers and fillers....
08/21/1984
4360612Agglomerate-free, bubble-free, high barrier vinylidene chloride polymer films and process of preparation
An improved process for preparing extruded films from film-forming polymeric compositions based on vinylidene chloride copolymers and containing one or more inorganic particulate additives and to the films so prepared. The improvement comprises first prep...
11/23/1982
4342670Process for preparing rubber compositions for tire treads
A process for preparing a rubber composition for tire treads having resilience, wet skid resistance and wear resistance well balanced with each other, by mechanically mixing a specific amount in total of a halogenated butyl rubber, natural rubber or a pol...
08/03/1982
4321168Process for preparing rubber composition for tire treads
A process for preparing a tire tread rubber composition having improved rolling resistance and wet skid resistance comprising [I] 100 parts by weight of a rubber material composed of 25 to 75% by weight of substantially amorphous polybutadiene having a 1,...
03/23/1982
 
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