Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Brekau; Uwe
Address:
Cologne, DE
No. of patents:
2
Patents:












Patent Number Title Of Patent Date Issued
5964693 Continuous preparation of silica sols which contain large particles October 12, 1999
A process is provided for the preparation of aqueous silica sols having a particle size of 27 to 72 nm. by adding fresh acidic silica sol into the reactors of a multi stage cascade reactor wherein the reactors contain aqueous solution of colloidal silica sol of a pH of 8 or above. Each
5458812 Process for the production and concentration of silica sols October 17, 1995
Process for the production and concentration of alkaline silica sols containing nonaggregated, spherical SiO.sub.2 particles with a diameter of .gtoreq.1 nm starting with SiO.sub.2 concentrations of 4-8% by weight, using microporous membrane filters.










 
 
  Recently Added Patents
Process for producing polyols
Light emitting element, method for manufacturing the light emitting element, optical element and method for manufacturing the optical element
System and method for organizing, processing and presenting information
Coupling device having piercing member
Valved, microwell cell-culture device and method
Vending machine
Solar cell using polymer-dispersed liquid crystals
  Randomly Featured Patents
Clutter elimination radar
Apparatus for dip-molding and enclosed loop
Yoke support
Surface mounted electrical raceways
Cellulosic fiber composites using protein hydrolysates and methods of making same
Seal member
Automatic focus detecting mechanism for endoscopes
Method of fabricating a thin film transistor with multiple gates using metal induced lateral crystallization
Desulfurization and novel sorbent for same
Apparatus and method for replacing bearings in a walking beam in trucks and trailers having tandem axles