The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 28, 2008
Filed:
Apr. 11, 2002
Todd M. Bender, Auburn, PA (US);
Paul R. Horinka, Reading, PA (US);
Joseph J. Kozlowski, Reading, PA (US);
Gregory R. Mill, Womelsdorf, PA (US);
John R. Petro, Fleetwood, PA (US);
Grant E. Schlegel, Macungie, PA (US);
Carryll A. Seelig, Reading, PA (US);
Gordon L. Tullos, Reading, PA (US);
Todd M. Bender, Auburn, PA (US);
Paul R. Horinka, Reading, PA (US);
Joseph J. Kozlowski, Reading, PA (US);
Gregory R. Mill, Womelsdorf, PA (US);
John R. Petro, Fleetwood, PA (US);
Grant E. Schlegel, Macungie, PA (US);
Carryll A. Seelig, Reading, PA (US);
Gordon L. Tullos, Reading, PA (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
A method of providing a powder coating to MDF substrate panels wherein, by the differential treatment of the front and back surfaces of these panels, both surfaces can be coated at the same time and the effects of moisture and other volatile outgassing is controlled in such a way as to provide a blemish-free front facing surface with a minimal, but nonetheless acceptable, amount of blemishes on the opposite or back surface. Differential treatment is achieved by preparing each surface using different grades of sand-paper, applying different amounts of curing energy, whether infra-red or thermal, or by applying different thicknesses of coating to each surface.