James C Farrell

US Patent:

40651835, Dec 27, 1977

Filed:

Nov 15, 1976

Appl. No.:

5/741817

Inventors:

David A. Hill - Hermosa Beach CA
Durk J. Pearson - Palos Verdes Estates CA
Ethelyn P. Motley - Rancho Palos Verdes CA
Thomas N. Beard - Denver CO
James L. Farrell - Palos Verdes Estates CA

Assignee:

TRW Inc. - Redondo Beach CA

International Classification:

E21C 4110

US Classification:

299 4

Abstract:

A process for the in-situ recovery of hydrocarbon, carbon monoxide, and hydrogen values and associated minerals from subsurface oil shale deposits is provided by forming a gas-tight retort chamber and injecting it with a hot, pressurized gas followed by a solvent extraction and finally a combustion of the hydrocarbon residue. In order to conduct the process, the shale formation must be beneath a gas impermeable geological structure which will form a gas-tight chamber upon leaching of the water soluble minerals.

US Patent:

20200067613, Feb 27, 2020

Filed:

Aug 22, 2018

Appl. No.:

16/109660

Inventors:

- Chicago IL, US
James T. Farrell - Hermosa Beach CA, US
James D. Cooper - Torrence CA, US

International Classification:

H04B 17/345

Abstract:

Methods and systems for harmonic intermodulation testing are presently disclosed. The test system includes a signal generator configured to generate a test signal having a first frequency. The test system also includes an antenna system configured to transmit a representation of the test signal and receive a harmonic intermodulation signal. The test system also includes a filter configured to remove signals, from a representation of the harmonic intermodulation signal, over a bandwidth that includes the first frequency. The test system also includes an analysis unit configured to measure a power level of a second frequency contained in the representation of the harmonic intermodulation signal. The analysis unit is also configured to determine a passive intermodulation magnitude at any order based on the power level of second frequency.