Andrew C Williams

US Patent:

7734184, Jun 8, 2010

Filed:

Jan 23, 2007

Appl. No.:

11/626314

Inventors:

D. James Douma - Monrovia CA, US
Kishore Kamath - San Jose CA, US
Andrew R. Williams - San Jose CA, US

Assignee:

Finisar Corporation - Sunnyvale CA

International Classification:

H04B 10/00

US Classification:

398135, 398138, 398139

Abstract:

An optoelectronic transceiver comprises an active linear TOSA circuit mounted on a header. The active linear TOSA circuit includes input nodes for receiving a differential signal pair, a first bipolar transistor, a second bipolar transistor and an electro-optical transducer. A base terminal of the first bipolar transistor is coupled to the two input nodes and an emitter terminal of the first bipolar transistor is coupled to a base terminal of the second bipolar transistor. A collector terminal of the first bipolar transistor is coupled to a first terminal of the electro-optical transducer, the first terminal of the electro-optical transducer also being configured to be coupled to a voltage source. A collector terminal of the second bipolar transistor is coupled to a second terminal of the electro-optical transducer and an emitter terminal of the second bipolar transistor is coupled to a signal ground which is not the header ground.

US Patent:

20090166370, Jul 2, 2009

Filed:

Oct 15, 2002

Appl. No.:

10/491943

Inventors:

Ken De Turk - Yucaipa CA, US
Kevin B. Graves - Catawissa MO, US
Andrew Williams - Lake St. Louis MO, US
Jerry A. Snidow - St. Peters MO, US

International Classification:

B65D 83/00

US Classification:

221 8, 221282, 221 2, 221 1

Abstract:

An apparatus is used to dispense radiopharmaceuticals from an open vial into capsules. The apparatus is particularly well suited for volatile radiopharmaceuticals such as I-131 radioiodine. The method used with this apparatus enables the operator's hands to remain at a distance from the radiopharmaceutical to reduce extremity exposure which also allows use of highly concentrated stock solutions.