Richard E Hawkins
Accountancy in Orem, UT
License number
Utah 108657-2601
Issued Date
Jan 1, 1910
Expiration Date
Aug 31, 1994
Category
Accountancy
Type
Certified Public Accountant
Address
Address
Orem, UT
Professional information
Symmetrical Aromatic Sulfide Production
US Patent:
4044056, Aug 23, 1977
Filed:
May 20, 1976
Appl. No.:
5/688492
Inventors:
Richard T. Hawkins - Orem UT
Assignee:
Phillips Petroleum Company - Bartlesville OK
International Classification:
C07C14800
US Classification:
260609E
Abstract:
Unsymmetrical aromatic sulfides are converted to symmetrical sulfides in a disproportionation reaction by heating, optionally in the presence of a free radical generator and/or oxygen-containing gas, at an elevated temperature and for a period of time sufficient to convert the unsymmetrical sulfides to symmetrical sulfides.
Phenylene Sulfide Oligomer Production
US Patent:
4046749, Sep 6, 1977
Filed:
Sep 15, 1975
Appl. No.:
5/613669
Inventors:
Richard T. Hawkins - Orem UT
Assignee:
Phillips Petroleum Company - Bartlesville OK
International Classification:
C08F 2800, C08G 7506
US Classification:
260 79
Abstract:
Phenylene sulfide oligomers are produced by heating at least one aromatic sulfide in an oxygen-containing gaseous atmosphere at an elevated temperature and for a period of time sufficient to form the oligomers. The oligomers can be cured by heating in an oxygen-containing atmosphere while the oligomers are being produced or in a subsequent step after production to yield cured oligomers having utility as coatings, films, and the like.
Recovery Of Cesium
US Patent:
4477377, Oct 16, 1984
Filed:
Jun 17, 1982
Appl. No.:
6/389402
Inventors:
Reed M. Izatt - Provo UT
James J. Christensen - Provo UT
Richard T. Hawkins - Orem UT
James J. Christensen - Provo UT
Richard T. Hawkins - Orem UT
Assignee:
Brigham Young University - Provo UT
International Classification:
G21F 904, G21F 912
US Classification:
252631
Abstract:
A process of recovering cesium ions from mixtures of ions containing them and other ions, e. g. , a solution of nuclear waste materials, which comprises establishing a separate source phase containing such a mixture of ions, establishing a separate recipient phase, establishing a liquid membrane phase in interfacial contact with said source and recipient phases, said membrane phase containing a ligand, preferably a selected calixarene as depicted in the drawing, maintaining said interfacial contact for a period of time long enough to transport by said ligand a substantial portion of the cesium ion from the source phase to the recipient phase, and recovering the cesium ion from the recipient phase. The separation of the source and recipient phases may be by the membrane phase only, e. g. , where these aqueous phases are emulsified as dispersed phases in a continuous membrane phase, or may include a physical barrier as well, e. g.