William E Stillwell

US Patent:

20040052837, Mar 18, 2004

Filed:

Jun 24, 2003

Appl. No.:

10/602978

Inventors:

William Stillwell - Indianapolis IN, US
Mustapha Zerouga - Indianapolis IN, US
Laura Jenski - Milton WV, US

International Classification:

A61K009/127
A61K031/525

US Classification:

424/450000, 514/560000, 514/251000

Abstract:

Lipid based anti-proliferative agents and methods of use thereof are disclosed.

US Patent:

54173884, May 23, 1995

Filed:

Jul 15, 1993

Appl. No.:

8/092128

Inventors:

William R. Stillwell - West Harrison IN

International Classification:

B61L 1300

US Classification:

246122R

Abstract:

A train detection circuit is provided to determine whether a particular section or block of railroad track is occupied by a train. In one embodiment, a bias current generator is used to provide a low current signal that flows through the rails and through the wheels and axles of a railroad engine or car, such bias current ultimately being directed into a train detection circuit which measures the magnitude of the received bias current. If the bias current is greater than a certain magnitude, that is indicative of the particular block being occupied by a train. In second embodiment, a continuous pulse signal is directed into one rail, through a resistance bond, and through the other rail into a train detection circuit. The magnitude of this received pulse at the detection circuit will be quite small unless a train occupies the block. The received magnitude of the pulse signal can be compared to a predetermined threshold to determine the presence of a train in the block.