Control of gaseous sterilization

Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Process control in response to analysis

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C422S028000, C422S032000, C422S108000

Reexamination Certificate

active

07025932

ABSTRACT:
A method of sterilizing a sealable enclosure includes initially adjusting the relative humidity in the enclosure to a level substantially below ambient, circulating a carrier gas to the enclosure at a temperature raised above ambient and supplying a sterilant vapor or vapors to the circulating carrier gas sufficient to saturate substantially the gas. On cooling in the enclosure, a condensate of the sterilant vapor is formed on surfaces in the enclosure, which is measured whilst continuing to circulate the gas/vapor until a required amount of condensate has been formed on a the surface. Supply of sterilant vapor to the gas is terminated whilst circulating the saturated gas/vapor continues to maintain the condensate on the enclosure surfaces for a predetermined period of time. Finally the sterilant vapor is extracted from the chamber.

REFERENCES:
patent: 4898713 (1990-02-01), Picard
patent: 4956145 (1990-09-01), Cummings et al.
patent: 0 486 923 (1992-05-01), None
patent: 0 486 623 (1997-01-01), None
patent: 0 774 263 (1997-05-01), None
patent: 2 354 443 (2001-03-01), None
patent: 2 360 505 (2001-09-01), None
patent: WO 97/47331 (1997-12-01), None
Portner et al.,Sporicidal Effect of Peracetic Acid Vapor, Applied Microbiology, vol. 16, No. 11, Nov. 1968, pp. 1782-1785.
Marcos-Martin et al,Sterilization by Vapour Condensation, Pharmaceutical Technology Europe, vol. 18, No. 2, Feb. 1999 (24-32).
Scatchard et al.,Vapor-Liquid Euquilibrium. VIII. Hydrogen Peroxide-Water Mixtures, Journal of the American Chemical Society, vol. 74, No. 15, Aug. 6, 1952, pp. 3715-3720.
Swartling et al.,The Sterilizing Effect Against Bacillus subtilis Spores of Hydrogen Peroxide at Different Temperatures and Concentrations, J. Dairy Res. vol. 35, 1968, pp. 423-428.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Control of gaseous sterilization does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control of gaseous sterilization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control of gaseous sterilization will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3584758

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.