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:
Jul. 25, 2000
Filed:
Dec. 01, 1998
Applicant:
Inventors:
Michael J Hubbard, Holland, OH (US);
Walter J Kelly, Wadsworth, OH (US);
Anthony Verrocchi, Akron, OH (US);
Raymond J Weinert, Macedonia, OH (US);
Assignee:
Omnova Solutions Inc., Fairlawn, OH (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B29C / ;
U.S. Cl.
CPC ...
2641711 ; 156228 ; 15624411 ; 264175 ; 2641761 ; 264236 ;
Abstract
A method of continuously manufacturing and curing in-line a sheet of ethylene-propylene diene monomer to form an EPDM roofing membrane. The method includes the steps of forming a continuous sheet material of ethylene-propylene diene monomer and then continuously heating and pressing the sheet material to partially cure the sheet material and remove any voids within the sheet material. The partially cured sheet material is then continuously fed through a curing oven to fully cure the sheet material to form EPDM roofing membrane.