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. 24, 1994
Filed:
Jun. 16, 1993
D Mark Woiceshyn, St. Catharines, CA;
Bay Mills Limited, Ontario, CA;
Abstract
Disclosed is a process of manufacturing a roofing membrane that is free of any organic mat. The process includes selecting a lightweight polyester fabric including an open grid of over-under construction in which fill yarns are held between pairs of machine direction yarns lying essentially one above the other, the fabric including polyester yarns having about 30 to about 300 denier yarns in the machine direction, about 30 to about 300 denier yarns in the fill direction, a yarn per inch count of about 3.times.3 to about 10.times.10, and a dry weight pick-up of about 60 to about 250 parts by weight of binder relative to 100 parts by weight of polyester in the fabric; selecting a high strength reinforcing open grid; and passing the lightweight polyester open fabric, the high strength reinforcing open grid and any additional reinforcements free of any organic mat through bituminous material to form the roofing membrane.