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:
May. 25, 2010
Filed:
Jan. 23, 2007
Randy Jon Clark, Klamath Falls, OR (US);
Gary Lee Koepke, Klamath Falls, OR (US);
Keith Lynn Lewallen, Salado, TX (US);
Brent David Olson, Klamath Falls, OR (US);
William Robert Transue, Klamath Falls, OR (US);
Randy Jon Clark, Klamath Falls, OR (US);
Gary Lee Koepke, Klamath Falls, OR (US);
Keith Lynn Lewallen, Salado, TX (US);
Brent David Olson, Klamath Falls, OR (US);
William Robert Transue, Klamath Falls, OR (US);
JELD-WEN, inc., Klamath Falls, OR (US);
Abstract
A door has a core that includes a porous layer having a thickness and two opposing major surfaces. In one construction, the core also includes three fire-retardant layers, and two of the fire-retardant layers are separated by the porous layer. The porous layer and the fire-retardant layers are coupled together. Other constructions include one or more fire-retardant layers in balanced or unbalanced placement around the porous layer.