Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing gas sample
Reexamination Certificate
2001-11-22
2010-11-23
Jarrett, Lore (Department: 1797)
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing gas sample
C454S187000
Reexamination Certificate
active
07837942
ABSTRACT:
The invention relates to an allergy test chamber comprising at least one inlet for supplying allergen-free air, especially fresh air, into the chamber. Said chamber is characterised in that the at least one inlet (23) for allergen-free air is provided with an air flow distribution device (26, 27), and in that the allergy test chamber (20) also comprises at least one inlet (25) for allergen test particles, such as plant pollen or mite faeces, and at least one outlet (24) for removing air loaded with allergen test particles from the chamber by means of suction. Said outlet (24) is arranged at a distance from the inlets (23, 25) for allergen-free air and allergen test particles. Said air movement principle i.e. introducing air into the chamber, mixing it with a defined quantity of allergens, and removing by suction the allergen-loaded air to another area of the chamber, enables uniformity of the distribution of the allergen particles in the test chamber to be significantly improved, compared with known allergy test chambers wherein allergen-loaded air is circulated in the test chamber.
REFERENCES:
patent: 3701235 (1972-10-01), Isaacson
patent: 3976450 (1976-08-01), Marcote et al.
patent: 4059903 (1977-11-01), Piet et al.
patent: 5331991 (1994-07-01), Nilsson
patent: 5533501 (1996-07-01), Denyer
patent: 5830058 (1998-11-01), Røsjø
patent: 5865171 (1999-02-01), Cinquin
patent: 5935516 (1999-08-01), Baugh
patent: 99/16315 (1999-04-01), None
patent: WO0032150 (2000-06-01), None
Day, James H., Briscoe, Maureen P., Environmental exposure unit: a system to test anti-allergic treatment, Aug. 1999, Annals of Allergy, Asthma, & Immunology, vol. 83, Issue 2, pp. 83-89.
Ronborg, et al: “Exposure chamber for allergen challenge. The development and validation of a new concept”Allergy(Denmark), vol. 51, No. 2 pp. 82-88 (Feb. 1996).
Horak, et al: “Efficacy and tolerability of astemizole-D and Loratadine-D during prolonged, controlled allergen challenge in the Vienna Challenge Chamber”Arzneimittel-Forschung(Germany), vol. 46, No. 11, pp. 1077-1081 (Nov. 1996).
Htut, et al: “A pilot study on the effect of one room mechanical ventilation with heat recovery (MVHR) units on house dust mite populations and Der p1 levels in laboratory simulated bedrooms and on ambient conditions in an occupied bedroom in Cambridge, UK”International Journal of Environmental Health Research, vol. 6, No. 4, pp. 301-313 (1996).
Drinker Biddle & Reath LLP
Jarrett Lore
LandOfFree
Allergy test chamber does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Allergy test chamber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Allergy test chamber will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4155032