U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!

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Class 366/97 - With rotating stirrer


Subclass of Class 366 - Agitating
Definition: Subject matter comprising a stirrer which turns in but one
No. of patents: 142
Last issue date: 12/06/2011


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NumberTitleIssue Date
4343929Process for continuously polymerizing trioxane
A process for producing a polyacetal homopolymer or copolymer which comprises continuously feeding a liquid starting mixture containing molten trioxane and a catalyst and optionally a comonomer through a feed opening of a reactor, said reactor being a con...
08/10/1982
4329065Apparatus for processing plastic and polymeric materials
Novel and improved methods and apparatus for processing liquid or viscous materials. Essentially, the methods and apparatus involve feeding liquid materials to an annular processing passage for controlled processing. The annular processing passage is prov...
05/11/1982
4300838Mixing and kneading machine
An internal mixer includes a pair of rotors each having spiral vanes adapted to advance materials in the axial direction of the rotors. More particularly, each of the respective rotors has a long vane and a short vane and each of the vanes is of a spiral ...
11/17/1981
4294166Apparatus for mixing and baking of bread
A breadmaking method and apparatus particularly adapted for household use. A combined trough and baking-pan unit is removably mounted on a lift table arranged in the oven and, when raised, is automatically covered by a downwardly spring-biased closure mem...
10/13/1981
4289319Rotary seal construction and processor
A seal construction and rotary processor including the seal construction in which the seal includes nested truncated conical members of thin stiffly-resilient material interposed between relatively rotatable coaxial surfaces with inner edge portions of th...
09/15/1981
4284358Mixing and kneading machine
A mixing and kneading machine including a pair of parallel rotors each having a long vane and a short vane, both of which extend spirally about the center line of the rotors. A length ratio of the short vanes to the long vanes is selected within a range o...
08/18/1981
4272474Process for producing articles of ultra high molecular weight high density polyethylene
A process for producing articles of ultra high molecular weight high density polyethylene is disclosed which avoids long heating and cooling cycles, and compacting pressures in the order of 3,000 to 4,000 lbs/sq. inch. The resin is intensively mixed and t...
06/09/1981
4255059Processing element
Improved means for aligning processing members at various positions in processing passages of rotary processors. Essentially, the alignment means (or alignment elements) comprise a non-rotatable member positioned in the processing passage and shaped to at...
03/10/1981
4207004Seals for rotary processor
Sealing means for controlling leakage of material between closely spaced apart, relatively moving coaxial annular surfaces. Essentially, leakage is controlled by providing a pumping channel on one of the surfaces and a leakage liquid retaining channel on ...
06/10/1980
4194841Method and apparatus for processing polymeric materials
Method and apparatus for processing solid and viscous plastic material or polymeric material and the like in which plastic or polymeric material is fed through an inlet into an enclosed passage of which opposed side walls are moving simultaneously toward ...
03/25/1980
4194842Method for binding liquid-containing radioactive wastes and kneading machine therefor
Liquid-containing radioactive wastes are bound into thermoplastic material by introducing particles of thermoplastic material at a non-sticking temperature into a kneading machine, heating the thermoplastic material in the absence of radioactive wastes to...
03/25/1980
4183674Melt mixer
A melt mixer comprises a vessel equipped with heating means, and a pair or more of rotor means including rotors polygonal in cross section and held within the vessel, the rotor means having a heating function. The rotors of each rotor means are angularly ...
01/15/1980
4176968Three sectioned mixer having individual thermal controls
The present invention provides an apparatus for preparing and testing material samples, comprising a back plate and a center section having two mixing chambers formed by two adjacent circular apertures in the center section, each of the mixing chambers ha...
12/04/1979
4142805Method for processing polymeric material
Method for processing solid and viscous plastic material or polymeric material and the like in which plastic or polymeric material is fed through an inlet into an enclosed passage of which opposed side walls are moving simultaneously toward an outlet and ...
03/06/1979
4104412Methods and systems for making aerated candy
A candy making system wherein a viscous candy mass is cooked and continuously fed through a closed chamber reactor wherein a gas, such as air under pressure, is homogeneously intermixed with the continuously proceeding melt product stream to incorporate g...
08/01/1978
4053144Delta rotor through feed mixer
A through feed mixer for mixing and plasticizing a variety of materials has a pair of coaxially disposed rotors in a mixing chamber. The rotors are without helical twist but each have a mixing section which is derived from a regular n-sided polygon compri...
10/11/1977
4033557Method of recovery of material test samples
The present method of test sample recovery comprises the steps of: placement of granulated solid material within a multi-chambered, multi-sectioned apparatus having an angulated interior surface; rotatably mixing the material of said sample through the us...
07/05/1977
4025056Mixing apparatus
A gear pump comprising a driving and a driven gear, pairs of successive teeth of at least one gear each having a cut-out allowing a proportion of slip, the cut-outs each extending to the root of the tooth and the cut-outs in successive teeth being in axia...
05/24/1977
4021024Perforated baffle-impeller and process of concentrating dense masses
Vessel internals comprising at least one novel perforated, baffle-impellor combination attached to rotatable drive shaft are disclosed for use in a stirred, horizontal vessel containing solid particulate matter. Using such internals, dense masses present ...
05/03/1977
4015828Injection of additives into liquid streams
A conventional gear pump is modified by the incorporation of means to permit a liquid additive to be injected into the gear pump at the point at which the gear wheels separate. At this point the pressure is at or below atmospheric pressure and, as a resul...
04/05/1977
3983862Process for making non-crystalline sugary materials from sugar and glucose syrup
Non-crystalline sugary materials are made from sugar and glucose syrup by heating an undissolved mixture of undiluted crystallized sugar and liquid glucose in an extrusion machine having meshing screws within a casing with means for heating the casing to ...
10/05/1976
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