Rajagopal S Vijayakumar

US Patent:

7224454, May 29, 2007

Filed:

Aug 30, 2004

Appl. No.:

10/928706

Inventors:

Rajagopal Vijayakumar - Liverpool NY, US
Sylvain Dominique Masset - Seigy, FR

Assignee:

Hamilton Associates, Inc. - Owings Mills MD

International Classification:

G01N 21/01
G01N 21/00
G01J 31/14

US Classification:

356337, 356244, 250574

Abstract:

An analyzing probe for insertion into numerous different environments to determine at least one characteristic of particulate matter suspended in a fluid stream of a test sample. Preferably, the analyzing probe includes a minimal amount of optical elements such as lenses that are subjected to the conditions of the environment of the fluid stream to be tested. Further, the analyzing probe is preferably designed so that it can be readily manufactured, operated and installed by relatively unskilled laborers.

US Patent:

7998259, Aug 16, 2011

Filed:

Jan 16, 2009

Appl. No.:

12/355566

Inventors:

Rajagopal Vijayakumar - Liverpool NY, US

International Classification:

B01D 53/04

US Classification:

96135, 96134

Abstract:

The present invention relates generally to particle removal and air borne molecular contaminant air filters, and, more particularly, to a combination particle and air borne molecular contaminant filter with an activated material separator.

US Patent:

8408046, Apr 2, 2013

Filed:

Nov 13, 2009

Appl. No.:

12/617996

Inventors:

Zhonglin Xu - Beijing, CN
Yizhao Zhang - Beijing, CN
Feng Wen - Beijing, CN
Jinming Shen - Shanghai, CN
Xin Feng - Beijing, CN
Rajagopal Vijayakumar - Liverpool NY, US

International Classification:

G01N 15/08

US Classification:

73 38

Abstract:

A system for in line in situ validation of an air filter of an exhaust filter system including a scan head, a means for facilitating movement of said scan head in the XY plane, a means for externally controlling the movement of the scan head from outside the plenum of the exhaust filter system in the XY plane, and a means for coupling the scan head to the means for externally controlling the movement of the scan head, is provided. The system can also include a scanning arm, inside and outside magnetic couples, and rolling means to facilitate movement of the inside and outside magnetic couples. A method for in line in situ validation of an air filter in an exhaust filter system is also described, which involves the use of the system for in line in situ validation of air filters of an exhaust filter system.

US Patent:

20040012777, Jan 22, 2004

Filed:

Jul 17, 2002

Appl. No.:

10/196272

Inventors:

Rajagopal Vijayakumar - Liverpool NY, US
Sylvain Masset - Seigy, FR

International Classification:

G01N021/01

US Classification:

356/244000

Abstract:

An analyzing probe for insertion into numerous different environments to determine at least one characteristic of particulate matter suspended in a fluid stream of a test sample. Preferably, the analyzing probe includes a minimal amount of optical elements such as lenses that are subjected to the conditions of the environment of the fluid stream to be tested. Further, the analyzing probe is preferably designed so that it can be readily manufactured, operated and installed by relatively unskilled laborers.