Xiang D Liu

US Patent:

7829046, Nov 9, 2010

Filed:

Aug 29, 2008

Appl. No.:

12/202098

Inventors:

Marc M. Baum - Arcadia CA, US
John Moss - Los Angeles CA, US
Xin Zhou - Rancho Cucamonga CA, US
Alex Kwan - Chino Hills CA, US
Alfred Feitisch - Los Gatos CA, US
Xiang Liu - Rancho Cucamonga CA, US

Assignee:

SpectraSensors, Inc. - Rancho Cucamonga CA

International Classification:

B01D 47/00
B01J 38/12

US Classification:

423210, 502 38

Abstract:

Scrubber media for reactive gases, that can include but are not necessarily limited to hydrogen chloride (HCl), hydrogen sulfide (HS), hydrogen fluoride (HF), and ammonia (NH), can include reactive particles, potentially as small as nano-scale, that can optionally be suspended on macro-scale carrier particles. Reactive gases can be converted to non-volatile compounds by being passed through a bed of such scrubber media. Such scrubber media can be used to remove reactive gases from gas mixtures. Potential applications include differential absorption spectroscopy, air pollutant emission controls, and the like. Methods of preparing scrubber media are also described.

US Patent:

20150288817, Oct 8, 2015

Filed:

Apr 2, 2014

Appl. No.:

14/243721

Inventors:

Xiang Liu - Irvine CA, US

International Classification:

H04M 3/436
H04M 3/42
H04M 3/02

Abstract:

An apparatus for blocking unwanted calls is disclosed. The apparatus incorporates a whitelist which the user can program so that known friendly callers are not interrupted by the apparatus. The apparatus also incorporates a blacklist which automatically rejects known unwanted callers so that the user is not interrupted by these calls. Additionally, the apparatus allows the user to easily add new numbers to either the blacklist or white list and also to delete numbers from the white list, blacklist or master list of caller IDs. For new numbers, callers are presented with a simple but yet effective message that states that the caller should hang up if the caller is a solicitor or telemarketer, or otherwise press zero so that the apparatus can allow the call to go through to the telephone.