John Enoch Hansen

US Patent:

50048600, Apr 2, 1991

Filed:

Jul 28, 1986

Appl. No.:

6/890127

Inventors:

John S. Hansen - League City TX
William A. Waranius - Texas City TX

Assignee:

Amoco Corporation - Chicago IL

International Classification:

C07C 714

US Classification:

585812

Abstract:

The filter system includes a plurality of porous metal filter tubes and is used in a method for extracting high purity solid para-xylene crystals from a mother liquor feed slurry of mixed xylenes in liquid and crystal form utilizing a separation unit which includes a crystallization stage where the mother liquor slurry is cooled in at least one crystallizer to crystallize liquid para-xylene into solid crystals, an isomerization stage where xylenes, such as ortho-xylene and meta-xylene, are reacted over a catalyst bed to convert these xylenes into para-xylene, and a distillation stage where the mixed xylenes are separated from the impurities from which byproducts are obtained. The method includes the steps of diverting and circulating some of the liquid crystal slurry from the crystallizer through a filter system and back to the crystallizer while at the same time extracting some of the liquid crystal slurry and supplying same to a centrifuge where solid crystal para-xylene is extracted from the liquid crystal slurry; and extracting essentially solid-free liquid from said filter system and supplying said to the isomerization stage thereby to increase the amount of solid para-xylene crystals extracted from the centrifuge over a given period of time.

US Patent:

20170095020, Apr 6, 2017

Filed:

Oct 2, 2015

Appl. No.:

14/874381

Inventors:

John Joseph Hansen - Spanish Fork UT, US

International Classification:

A41D 25/06

Abstract:

A system is provided that enables a wearer to tie a dress tie so that the ends thereof are of optimum length on the first try after a short, one-time practice session. Optimum length is assumed when the tip of large end of the tie is even with the center of the wearers belt buckle. The system necessitates creation of a line of dress ties that, except for the print design on the outer shell, are essentially identical with respect to thickness, width and length. In addition, all ties in the line must employ a dimensionally-stable internal backing fabric, to prevent stretching. Identical series of equally-spaced position markers are provided on each tie in the line so that a wearer can identify a proper starting point for beginning to knot the tie. Markers are embroidered or deposited on a portion of each tie.

Address:

6475 S 1655 E, Salt Lake City, UT 84121

Phone:

(801)9428967

VIN:

KNDJC736375677240

Make:

KIA

Model:

SORENTO

Year:

2007