Mohammed A Hussain

US Patent:

7198722, Apr 3, 2007

Filed:

Nov 11, 2003

Appl. No.:

10/605974

Inventors:

Mohammed Azam Hussain - Houston TX, US

International Classification:

B01D 61/00
C02F 1/02
B03D 3/00
A61M 1/16

US Classification:

210651, 210180, 210175, 2101952, 210723, 210727, 210767, 210639

Abstract:

Water containing dissolved salts, such as calcium sulfate, calcium chloride, magnesium sulfate, magnesium chloride, sodium carbonate, sodium chloride, sodium sulfate, calcium bicarbonate, and mixtures thereof, is treated to reduce the concentration of those salts. About 0. 1 to about 60 g/L of sodium hydroxide, sodium carbonate, potassium hydroxide, potassium carbonate, calcium hydroxide, calcium carbonate, aluminum hydroxide, aluminum sulfate, aluminum potassium sulfate, and mixtures thereof is added to the water, whereby a precipitate forms in the water. The precipitate is separated from said water and the water is desalinated using reverse osmosis, flash evaporation, or another method. The process is preferably performed by first adding calcium oxide or calcium hydroxide, separating the precipitate that forms, then adding sodium hydroxide and sodium carbonate to form a second precipitate.

US Patent:

40414868, Aug 9, 1977

Filed:

Nov 10, 1975

Appl. No.:

5/630730

Inventors:

Mohammed Imam Hussain - Los Angeles CA

Assignee:

RCA Corporation - New York NY

International Classification:

G01S 902

US Classification:

343 73

Abstract:

An aircraft DME is receptive of a series of pulses the nature of which alternates between a series of random time spaced pulses and a series of uniform time spaced pulses, where the latter serve to identify the source of the pulses. A set-reset type of counter triggered by the decoded series of random pulses or by the decoded series of uniform time spaced pulses is thereafter continually advanced to a known count producing a gate signal which searches and locks onto the decoded series of uniform time spaced pulses by repeating the process. After a preselected number of repeats corresponding to successive uniformly spaced pulses, audio signals are produced so long as the uniform spaced pulses continue.