Coating processes – With post-treatment of coating or coating material – Heating or drying
Reexamination Certificate
2006-07-03
2010-10-19
Cameron, Erma (Department: 1715)
Coating processes
With post-treatment of coating or coating material
Heating or drying
C427S385500, C427S393500
Reexamination Certificate
active
07815974
ABSTRACT:
A flexible diffuser membrane for diffusing gas into a liquid includes a substrate covered wholly or partially by a thin fluorocarbon elastomer coating. The coating is applied after the substrate has been fully constructed and cured. The coating is then mixed with an adhesive catalyst and applied by spraying or in another suitable manner to the substrate. The substrate and coating are then heated to a temperature such as 350° F.-800° F. adequate to form a strong chemical, molecular and adhesive bond between the coating and substrate. Perforations are formed in the membrane, the substrate may be treated with a biocide allowing the uncoated edges of the perforations to be coated with the biocide and resist biological growth.
REFERENCES:
patent: 5238471 (1993-08-01), Blanchet-Fincher
patent: 6486291 (2002-11-01), Mrozinski et al.
patent: 6543753 (2003-04-01), Tharp
patent: 6648147 (2003-11-01), Lydon et al.
patent: 6759129 (2004-07-01), Fukushi
patent: 2005/0003204 (2005-01-01), Frankel et al.
patent: 2006/0257555 (2006-11-01), Brady et al.
patent: 2007/0001323 (2007-01-01), Kang
patent: 2007/0128394 (2007-06-01), Frankel et al.
Cameron Erma
Environmental Dynamics, Inc.
Husch & Blackwell LLP
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