RICHARD H HODGES
Broker in Marblehead, MA

License number
Massachusetts 96441
Issued Date
May 1, 1977
Expiration Date
Jul 31, 2001
Type
Broker
Address
Address
Marblehead, MA 01945

Professional information

Richard Hodges Photo 1

Dosimetry Control Method

US Patent:
4058752, Nov 15, 1977
Filed:
Sep 9, 1976
Appl. No.:
5/721918
Inventors:
William C. Woods - Lynn MA
Robert E. Levin - South Hamilton MA
Richard H. Hodges - Marblehead MA
Assignee:
GTE Sylvania Incorporated - Danvers MA
International Classification:
H05B 4136, H05B 3702
US Classification:
315360
Abstract:
In a method of operating a photochemotherapy chamber for the irradiation of a patient with long wave ultraviolet light, a prescribed dosage is first selected. The prescribed dosage is then automatically converted into the time duration that an ultraviolet source should be energized to deliver said dosage by monitoring the line voltage and the total hours of operation of the ultraviolet source and adjusting said time duration accordingly.