Thomas Clement Jeffery Jr.
Engineering at Devon Ln, Lake Charles, LA

4339323, Jul 13, 1982

Sep 18, 1980

6/188401

Colonel R. Dilmore - Portland TX
Carl W. Raetzsch - Corpus Christi TX
Thomas C. Jeffery - Lake Charles LA
Dallas D. Dupre - Pittsburgh PA

PPG Industries, Inc. - Pittsburgh PA

C25B 904, C25B 1110, C25B 1308

204256

Disclosed is a bipolar electrolyzer having a plurality of individual electrolytic cells electrically and mechanically in series with a bipolar element between pairs of adjacent individual cells. The bipolar element has an anodic side with anodes of the first electrolytic cell of a pair of electrolytic cells depending therefrom, and a cathodic side with the cathodes of the second electrolytic cell of the pair of electrolytic cells depending therefrom. The anodic side of the bipolar element has an acidified alkali metal chloride resistant valve metal surface, and the cathodic side of the bipolar element has an alkali metal hydroxide resistant transition metal surface. The bipolar electrolyzer is characterized by the bipolar element having a bonded laminate of a valve metal and a transition metal, a first metal plate of a transition metal, intermittently bonded to the transition metal member of the bonded laminate at the first joints, and a second transition metal plate above the first joints, that is, above the joints between the first transition metal plate and the bonded laminate. The second metal plate is bonded to the first metal plate and second joints whereby to protect the first joints from contact with the catholyte liquor.

4174266, Nov 13, 1979

Aug 7, 1978

5/931633

Thomas C. Jeffery - Lake Charles LA

PPG Industries, Inc. - Pittsburgh PA

C25B 116, C25B 126

204 98

Disclosed is an electrolysis cell and method of operation in which metal anodes (preferably titanium) provided with an electrically conducting electrocatalytic coating in an anode compartment face diaphragm covered metal cathodes in a cathode compartment, in which the anodes are spaced from an imperforate valve metal separating partition by a separating wall behind which the anolyte can recirculate downward, the anodic gases rising in the anode compartment "gently" circulate the anolyte and the gases are discharged into a brine box above the anode compartment near the center thereof and the anolyte recirculates downward near at least one end of the anode compartment; and a method of operation which provides circulation from front to back of the anode compartment and from center to sides of the anode compartment and means for adding new diaphragm material to the circulating anolyte to deposit said new diaphragm material on the diaphragms and methods of determining when and how much new diaphragm material to add.

4092846, Jun 6, 1978

Feb 4, 1976

5/655187

Thomas C. Jeffery - Lake Charles LA
Wilmer B. Graybill - Pittsburgh PA

PPG Industries, Inc. - Pittsburgh PA

G01N 3300

73 29

Liquid if present in a gas stream is detected by expanding the volume per unit weight of the gas in a vessel to the point where liquid collects in the bottom of the vessel and weighing the liquid.