Andrew O. Wikman
Engineering at Millburn Ave, Baton Rouge, LA
License number
Louisiana PE.0018055
Issued Date
May 22, 1979
Category
Civil Engineer
Type
Chemical Engineer
Address
Address
12477 E Millburn Ave, Baton Rouge, LA 70815
Professional information
Apparatus For Recharging A Heated Receptacle With Particulate Matter At A Controlled Velocity
US Patent:
5419462, May 30, 1995
Filed:
Jan 10, 1994
Appl. No.:
8/179410
Inventors:
Steven W. Johnston - Seabrook TX
Andrew O. Wikman - Baton Rouge LA
Andrew O. Wikman - Baton Rouge LA
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
B67D 506
US Classification:
222183
Abstract:
Particle scattering and/or trapping in the feed of particulate matter into a receptacle can be avoided by the use of a particulate matter-dispensing apparatus comprising telescopically-aligned internal and external robes associated with an actuator for telescopic movement of the tubes; the tubes having inner surfaces which are free of any protrusion or recession capable of preventing telescopic movement of the tubes or permitting the resting of particulate matter within the tubes, and the external tube having a distal orifice which is sufficiently smaller than its bore to decrease the flow rate of particulate matter through the tube. The novel apparatus is particularly useful for the discontinuous feeding of particulate polysilicon into a melting crucible.
Device For The Magnetic Inductive Heating Of Vessels
US Patent:
5260538, Nov 9, 1993
Filed:
Apr 9, 1992
Appl. No.:
7/865972
Inventors:
David W. Clary - Baton Rouge LA
Andrew O. Wikman - Baton Rouge LA
Andrew O. Wikman - Baton Rouge LA
Assignee:
Ethyl Corporation - Richmond VA
International Classification:
H05B 602
US Classification:
219 10491
Abstract:
The inductive heating of a reactor vessel by an external electromagnetic heating source is made more uniform by placing a susceptor between the heating source and the reactor vessel. In preferred embodiments, the reactor vessel is a fluidized bed vessel made of graphite and suitable for the preparation or treatment of polysilicon particles, and the susceptor is also made of graphite.
Process For Disposal Of Sodium Sludge
US Patent:
4154607, May 15, 1979
Filed:
Nov 14, 1977
Appl. No.:
5/851396
Inventors:
Andrew O. Wikman - Baton Rouge LA
Robert L. Say - Baton Rouge LA
Robert H. Jones - Baton Rouge LA
James E. Rogers - Pearland TX
Robert L. Say - Baton Rouge LA
Robert H. Jones - Baton Rouge LA
James E. Rogers - Pearland TX
Assignee:
Ethyl Corporation - Richmond VA
International Classification:
C22D 1300
US Classification:
75 77
Abstract:
A process for safely and conveniently disposing of active metal residue, such as a mixture of alkali metal and alkaline earth metal, by introducing the residue into a furnace in which it is completely transformed into harmless metal salts or oxides, which can be disposed of safely and inexpensively.
Silane Compositions And Process
US Patent:
5290342, Mar 1, 1994
Filed:
Apr 24, 1992
Appl. No.:
7/873461
Inventors:
Andrew O. Wikman - Baton Rouge LA
Won S. Park - Baton Rouge LA
Charles R. Everly - Baton Rouge LA
Won S. Park - Baton Rouge LA
Charles R. Everly - Baton Rouge LA
Assignee:
Ethyl Corporation - Richmond VA
International Classification:
B01D 5304
US Classification:
95143
Abstract:
Improved process for separating ethylsilane from silane by selective adsorption onto an effectively treated carbon bed and method of treatment of such carbon bed to enhance the selective adsorption of ethylsilane.