Ronald F Welch

US Patent:

20020182392, Dec 5, 2002

Filed:

Apr 5, 2001

Appl. No.:

09/828065

Inventors:

Ronald Welch - Horseheads NY, US
Robert Saccomanno - Montville NJ, US
Gary West - Budd Lake NJ, US

International Classification:

B32B007/02
B05D001/36
B05D003/02
C23C016/00

US Classification:

428/216000, 427/350000, 427/385500, 427/407100, 427/255600, 427/314000, 427/255700, 428/447000, 428/521000, 428/411100

Abstract:

The present invention relates to a method for depositing a parylene polymer barrier coating on a polymeric substrate for improving the chemical resistance of the substrate. The method comprises the steps of thoroughly treating a surface portion of the substrate to remove any contaminants, depositing at least one layer of parylene polymer on the contaminant-free surface portion via chemical vapor deposition, and then annealing each of the at least one layer of parylene polymer for a sufficient time. The present invention also relates to a composition for a barrier coating on a polymeric substrate comprising at least one layer of parylene polymer bonded to the surface of the polymeric substrate. The substrate can be a silicone rubber keypad.

US Patent:

60971622, Aug 1, 2000

Filed:

Aug 17, 1998

Appl. No.:

9/135185

Inventors:

Ronald F. Welch - Oak Ridge NJ
William R. Tombs - Clark NJ
Muthu Murugan - Howell NJ
Robert Saccomanno - Montville NJ

Assignee:

AlliedSignal Inc. - Morristown NJ

International Classification:

H05B 3700

US Classification:

315307

Abstract:

A broad range of brightness in a fluorescent lamp may be achieved by applying low-frequency, pulse-width modulated voltage or current to the lamp for a low level of brightness, or high-frequency voltage or current for a high level of brightness. Switching is provided to select between the two signals.

US Patent:

63039117, Oct 16, 2001

Filed:

Jan 12, 2000

Appl. No.:

9/481785

Inventors:

Ronald F. Welch - Oak Ridge NJ

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

H05B 102

US Classification:

219497

Abstract:

A circuit for controlling the temperature of a thin film conductive heater includes a control circuit for applying a voltage to the heater. The control circuit regulates the temperature of the heater element by using a modeling technique which assumes that the thin film coating functions as a single electrical resistor.