Use of continuously variable power in microwave assisted chemist

Details Use of continuously variable power in microwave assisted chemist Use of continuously variable power in microwave assisted chemist

1998-04-21

2000-07-04

Leung, Philip H.

Electric heating

Microwave heating

With control system

219710, H05B 668

Patent

active

060842261

ABSTRACT:
A method of microwave assisted chemistry is disclosed in which power can be supplied more continuously at preferred power levels to more precisely control or moderate a chemical reaction. The method comprises measuring the duty cycle required to maintain a measured selected parameter of a sample at a predetermined set point while the sample is being exposed to microwave radiation at a first predetermined power level; and moderating the duty cycle and the applied microwave power to increase the on time of the duty cycle while applying power at a second predetermined power level that is sufficient to maintain the sample at the set point using the moderated duty cycle. A corresponding device for microwave assisted chemistry is also disclosed and comprises a cavity for receiving a sample, a waveguide connected to the cavity, a source of microwave radiation connected to the waveguide, and a switching power supply for driving the source of microwave radiation.

REFERENCES:
patent: 3868602 (1975-02-01), Meddaugh
patent: 3995133 (1976-11-01), Anderson
patent: 4001537 (1977-01-01), Burke et al.
patent: 4041267 (1977-08-01), Wechsler
patent: 4149057 (1979-04-01), Fritts
patent: 4326114 (1982-04-01), Gerling et al.
patent: 4370535 (1983-01-01), Noda
patent: 4481447 (1984-11-01), Stupp et al.
patent: 4506127 (1985-03-01), Satoh
patent: 4517430 (1985-05-01), Slottag
patent: 4816986 (1989-03-01), Spiridonov et al.
patent: 4825028 (1989-04-01), Smith
patent: 4873408 (1989-10-01), Smith et al.
patent: 4900885 (1990-02-01), Inumada
patent: 4996403 (1991-02-01), White
patent: 5179264 (1993-01-01), Cuomo et al.
patent: 5191182 (1993-03-01), Gelorme et al.
patent: 5241040 (1993-08-01), Cuomo et al.
patent: 5264185 (1993-11-01), Floyd
patent: 5317081 (1994-05-01), Gelorme et al.
patent: 5317133 (1994-05-01), Sundstrom et al.
patent: 5340914 (1994-08-01), Cuomo et al.
patent: 5344493 (1994-09-01), Jackson
patent: 5371668 (1994-12-01), Gurwicz et al.
patent: 5387397 (1995-02-01), Strauss et al.
patent: 5440104 (1995-08-01), Koch et al.
patent: 5443795 (1995-08-01), Revesz
patent: 5451302 (1995-09-01), Cha
patent: 5495209 (1996-02-01), Gerstenberg
patent: 5521360 (1996-05-01), Johnson et al.
patent: 5525782 (1996-06-01), Yoneno et al.
patent: 5532642 (1996-07-01), Butwell et al.
patent: 5548103 (1996-08-01), Morita
patent: 5796080 (1998-08-01), Jennings et al.

Affiliated with

Also associated with

Rating

Use of continuously variable power in microwave assisted chemist does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Use of continuously variable power in microwave assisted chemist, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Use of continuously variable power in microwave assisted chemist will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1488455