EDWARD ROY CADENA, JR
Pilots at Roos Rd, Houston, TX

4837751, Jun 6, 1989

Dec 22, 1981

6/333525

Vitold R. Kruka - Houston TX
Robert M. Kipp - Houston TX
Edward R. Cadena - Houston TX

Shell Oil Company - Houston TX

G01V 138

367154

A hydrophone assembly for use in a marine streamer cable comprising a housing adapted to be mounted in the cable, such housing having a cavity containing a moldable material, an acoustic energy transducer positioned in the moldable material and a rigid body positioned adjacent to the housing such that the rigid body covers a portion of the cavity.

H3875, Dec 1, 1987

Dec 22, 1981

6/333524

Vitold R. Kruka - Houston TX
Edward R. Cadena - Houston TX

Shell Oil Company - Houston TX

H04R 122, G01V 116

367154

A marine seismic cable comprising a core; a housing coupled to the core and having a cavity adapted for holding a hydrophone, the cavity being located on a first side of the housing; elastic material positioned in the cavity and extending beyond the boundary of the cavity, a hydrophone positioned in the elastic material in the cavity; and a rigid plate positioned adjacent to the elastic material.

4055986, Nov 1, 1977

Dec 20, 1976

5/752342

Thomas L. Stewart - Houston TX
Edward R. Cadena - Houston TX

Shell Oil Company - Houston TX

G01N 1504

73 61R

Basic sediment and water content of crude oil flowing through a pipeline is measured by removing a representative sample of the crude oil, heating the sample, and centrifuging the sample to separate the water from the oil. The vapor pressure in the centrifuge is controlled to prevent the escape of any water which has been vaporized by the heating step. The water fraction is passed to a condenser to condense whatever water was vaporized during the heating. Following the condensing step, the water flows into a measuring vessel and is measured.

4300218, Nov 10, 1981

May 1, 1980

6/145528

Vitold R. Kruka - Houston TX
Albert J. Berni - Houston TX
Lawrence D. Park - Houston TX
Edward R. Cadena - Houston TX

Shell Oil Company - Houston TX

G01V 138, G01V 116

367165

A hydrophone mounting in a cavity of the hydrophone cable and a method of mounting the hydrophone. The cavity which is provided in the hydrophone cable may be constructed so that it is free-flooding, that is, the construction allows the liquid in which the hydrophone cable is submerged to completely surround the hydrophone. The cavity serves to insulate the hydrophone from movements and perturbations to the cable so that the hydrophone response is not distorted by these sources of noise.

4953144, Aug 28, 1990

Sep 11, 1989

7/405256

Robert Wing-Yu Chin - Houston TX
Vitold R. Kruka - Houston TX
Thomas L. Stewart - Houston TX
Robert W. Patterson - Houston TX
Edward R. Cadena - Houston TX

Shell Oil Company - Houston TX

H04B 106

367135

Geophones are placed around pipelines to detect third parties, e. g. , heavy construction vehicles. Associated computer equipment acquires data from the geophones and discriminates for the frequencies associated with heavy construction vehicles.

4510588, Apr 9, 1985

Dec 22, 1981

6/333526

Vitold R. Kruka - Houston TX
Robert M. Kipp - Houston TX
Edward R. Cadena - Houston TX

Shell Oil Company - Houston TX

G01V 138

367165

A marine seismic cable comprising a cable core, a housing adapted for holding an acoustic energy transducer, and a body of elastic material positioned between the cable core and the housing.